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Doward's daily does it all. Non-Miata*
Fitting as the eventual full-full circle miata alternative: FRS, BRZ, GT86, etc.
This thread will start with a bit of catchup, as the car has transitioned into a bit more of a competition car for me lately. Like many others here, I eventually grew tired of street driving a string of modded NA/NB Miatas and wanted something newer, safer, faster, with better audio, cruise control, etc. I sold "Turtle", a reeeally nice NB2 Miata that I had prepped and campaigned to a handful of regional NASA TT6 wins and still-standing records and turned those funds into this 137k mile 2013 BRZ back in December of 2020, when these were still trading near the $10k range. Early days were pure streetcar duty, daily duty stuff. Clean it up, paint correct, ceramic coat, hitch mount for my bike rack, and the 17x8 6ULs I had on hand already. https://cimg7.ibsrv.net/gimg/www.mia...402c7be6e6.jpg https://cimg8.ibsrv.net/gimg/www.mia...df5b004da9.jpg https://cimg9.ibsrv.net/gimg/www.mia...8301197c94.jpg https://cimg1.ibsrv.net/gimg/www.mia...5b83b52b02.jpg https://cimg2.ibsrv.net/gimg/www.mia...cf6687bbec.jpg https://cimg3.ibsrv.net/gimg/www.mia...144f7358ed.jpg https://cimg4.ibsrv.net/gimg/www.mia...a4cb65a1f3.jpg https://cimg5.ibsrv.net/gimg/www.mia...4602a2f6fe.jpg https://cimg6.ibsrv.net/gimg/www.mia...a44877cc91.jpg https://cimg0.ibsrv.net/gimg/www.mia...16173f876c.jpg |
... to be continued.....
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And thennnnnnnn?
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He'll be receiving a box from us soon.....
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https://cimg4.ibsrv.net/gimg/www.mia...c9f8d105ce.jpg
https://cimg3.ibsrv.net/gimg/www.mia...819e40483d.jpg The plan all along was to toe the line between SCCA STX autocross and NASA TT5. SCCA TimeTrial T4 and Gridlife ClubTR were fortunate secondary possibilities. SCCA ST classes require keeping one catalytic converter, so the hot ticket for power is to do a catless header and keep one cat in the over/mid pipe. So I ordered a ceramic coated JDL EL 4-2-1 header and matching "Ultra Quiet" catted and resonated midpipe. That order took forever with catalytic converters disappearing from the world economy at one point during covid. At some point I also scored a used and unmarried Open Flash Tablet tuner. Wheel choice is also limited in ST classes, with STX being limited to a 17x9. Options aplenty, but I didn't lke any of the Konigs at the time and 6ULs were actively going extinct. Enter the Enkei PF05. 17x9 +40mm https://cimg6.ibsrv.net/gimg/www.mia...3facc000fa.jpg https://cimg1.ibsrv.net/gimg/www.mia...1217b9ff32.jpg https://cimg5.ibsrv.net/gimg/www.mia...df307149ab.jpg https://cimg8.ibsrv.net/gimg/www.mia...f167805d87.jpg Did I mention this is a 146k mile, northeast Ohio car that was sold to me with Bridgestone Blizzak winter tires installed? Evidence of the "Salt Life" below: https://cimg6.ibsrv.net/gimg/www.mia...62bcd24727.jpg https://cimg7.ibsrv.net/gimg/www.mia...8eb353a52b.jpg This Motul 5w30 actually caused cam sync loss errors and I feared for my short lived Subaru FA20 life. Went back to 0w20 and cam sync errors went away. Slightly higher weight is common for FA20 track bros, but my engine hated it. https://cimg8.ibsrv.net/gimg/www.mia...b95c0656a8.jpg It looked like a 4x4 for a while: https://cimg4.ibsrv.net/gimg/www.mia...079dc048f7.jpg https://cimg8.ibsrv.net/gimg/www.mia...a8516cb50f.jpg https://cimg0.ibsrv.net/gimg/www.mia...c9bce3d0bd.jpg https://cimg3.ibsrv.net/gimg/www.mia...4de1448d8c.jpg This last photo shows the silencer in the Tomei expreme Ti 80mm exhaust. I love the idea of a titanium exhaust. I actually liked the sound of it below 30% throttle and also above 5500rpm. The problem is that real life driving is none of those things and it made my ears bleed if I wasn't wearing a helmet... More on this later. |
That silencer makes the exhaust impressively tiny
car looks awesome |
Another common theme with my "daily drivers" is that I get a random craving for track time while my racecar is broken that ends up thrusting the streetcar into competition usage. Last year it was the end of BP4W saga, so there was a big round of parts last spring (2021) so I could run a couple HPDEs with the homies.
-Tein Flex Z, off the shelf variety, no special sauce. teinVSQ54-CUSS4 -My favorite dual duty compromise brake pads: Stoptech "309" Sport. sto309.15390 & sto309.11240 -Stoptech stainless brake lines -Motul RBF660 -Centric Premium rotors. sto120.47021 & sto120.47031 -Whiteline swaybars and endlinks. 22mm front, 16mm rear. whlBSF45XZ & whlBSR54Z The Tomei 80R exhaust made my ears bleed, so it pretty quickly got replaced with a Revel(Tanabe) Medallion Touring-S Catback. rvlT80166RR I still have this exhaust, as the combo of it behind the catless JDL EL 4-2-1 and UltraQuiet midpipe was actually perfect, until I took it to a trackday and presumably burned all the muffler packing out of it. It was then incapable of passing the wifey test on pure volume, and also picked up a rasp/fart tone with heavier throttle inputs. These items remain on my shelf: rad20-0901 Radium FR-S/BRZ/86 PCV Side Catch Can Kit whlKCA435 Roll Center Adjuster Kit & Bump Steer whlKCA326 Rear Camber adj kit-control arm upper bushes The bump steer kit is allowed in NASA ST/TT but penalized there. It is not allowed in SCCA STX, so it hasn't made its way onto the car. The offset bushings are waiting until I decide to do a whole car, or at least whole rear end bushing effort, or until the lack of rear camber starts to cost me performance. A quick baseline, completely stock but with 6ULS: https://cimg6.ibsrv.net/gimg/www.mia...d01262e019.jpg https://cimg4.ibsrv.net/gimg/www.mia...04b0936495.jpg Parts begun installing themselves. https://cimg1.ibsrv.net/gimg/www.mia...be28c85e66.jpg https://cimg4.ibsrv.net/gimg/www.mia...c658a06079.jpg It was now easy to make it look broken with -5* of camber. https://cimg5.ibsrv.net/gimg/www.mia...a6fae1429b.jpg https://cimg6.ibsrv.net/gimg/www.mia...9b2f1526a5.jpg https://cimg7.ibsrv.net/gimg/www.mia...b18afe1ca5.jpg https://cimg8.ibsrv.net/gimg/www.mia...599b20625a.jpg https://cimg0.ibsrv.net/gimg/www.mia...fdc2f35aa2.jpg https://cimg2.ibsrv.net/gimg/www.mia...f640597184.jpg https://cimg5.ibsrv.net/gimg/www.mia...8d63dff412.jpg https://cimg8.ibsrv.net/gimg/www.mia...6c4e52f80d.jpg https://cimg2.ibsrv.net/gimg/www.mia...89c03f3ce0.jpg https://cimg4.ibsrv.net/gimg/www.mia...a9eb68f04b.jpg Trackday time. Nelson Ledges, NE Ohio SCCA TT Tuner 4 results/records are super soft(1:20.xxx). T4 got beat by T5(1:18.xx) this year. https://cimg9.ibsrv.net/gimg/www.mia...3f2358d48b.jpg https://cimg8.ibsrv.net/gimg/www.mia...0da27b9530.jpg https://cimg1.ibsrv.net/gimg/www.mia...a29a6a15c1.jpg https://cimg5.ibsrv.net/gimg/www.mia...d16bd2295e.jpg This was awesome: I ran the same lap time twice in a session: https://cimg9.ibsrv.net/gimg/www.mia...ac0398bc4e.jpg Later in the day, with pressures dialed and giving rides to the homies I snuck in a 1:15.9 which I am still really happy with. My miata in no-ballast, max power mode was in the 14s. @Brap-Brap had a certain type of experience that maybe he'll add to the conversation voluntarily. https://cimg4.ibsrv.net/gimg/www.mia...2cb887411c.jpg To round out the exhaust saga, I eventually succumbed to the wifey pressure and picked up a stock, OEM TRD catback. Later I came to learn these are fairly widely hated for being too loud behind aftermarket headers. It is a big step towards acceptable, but wifey still complains. Im done trying. https://cimg3.ibsrv.net/gimg/www.mia...a5cf673b88.jpg |
After Nelson Ledges, i pulled some of the front camber out and raised it back up to be my four season daily. That is pretty much how it stayed for a year...
I drove it up to central Michigan for work trips, parked it at the airport for for a week, literal daily driver. ...until a customer let me codrive his STR prepped ND2 while my racecar was engineless. https://cimg8.ibsrv.net/gimg/www.mia...7b40d9a845.png https://cimg2.ibsrv.net/gimg/www.mia...c3352173be.jpg https://cimg7.ibsrv.net/gimg/www.mia...49df7f38f2.jpg https://cimg9.ibsrv.net/gimg/www.mia...bcd4838b8a.jpg |
The local SCCA region introduced a weeknight PAX Challenge series, and I did OK. I think I was top 10 with the car as it sat. That just wasn't good enough, so Autocrossification began.
https://cimg9.ibsrv.net/gimg/www.mia...8ac795c7cc.jpg https://cimg0.ibsrv.net/gimg/www.mia...e6ee76dc66.jpg https://cimg2.ibsrv.net/gimg/www.mia...b4cd13740b.jpg https://cimg3.ibsrv.net/gimg/www.mia...47d5ebf090.jpg |
Primary issue to address was tires.
I had installed a set of RE71R scrubs from Justin Lee's NC endurance racecar effort. They were made in 2016. They worked great for HPDE and street use, but were clearly lacking in freshness for any sort of competitive environment. Being an eternal "value conscious consumer" I picked up a batch of used wheels from Blub(949 Racing's r&d car) as well as some 2019 AO52s from a local customer when I sold him some new ones. The wheels were mostly all Charcoals, but with a few Berylliums and a Silver that were already rattle canned black to match. They needed a fresh lease on life, so they got further rattle can treatment. Ultimately, one set received the scrub AO52s and the other some scrub 225/40/17 R7s from another customer for future NASA TT5 shenanigans. Marked A and B after I checked them all on the balancer. Mostly straight A's for street tire duty went rustoleum metallic bronze, B's got faux Beryllium for race tires. https://cimg6.ibsrv.net/gimg/www.mia...2298b2bf2a.jpg https://cimg1.ibsrv.net/gimg/www.mia...3b7c907b2b.jpg https://cimg2.ibsrv.net/gimg/www.mia...3ab8c03c6c.jpg Said customer buddy and the brand new RE71RS I sold him. https://cimg4.ibsrv.net/gimg/www.mia...2cc7a54dcd.jpg https://cimg7.ibsrv.net/gimg/www.mia...2465d2d621.jpg At the time of wheel swap, the whole car got lowered a bit more, front quite a bit to introduce some rake, as well as bumped back up to -4.2 front camber. The rear needs more camber as well, but in my interest of keeping it NASA TT5 legal, I am skipping the normal RLCA upgrade that STX cars would get and have a st of offset bushings sitting on a shelf. https://cimg0.ibsrv.net/gimg/www.mia...fea76a3ab0.jpg https://cimg1.ibsrv.net/gimg/www.mia...e72e89165d.jpg |
So with still old, but significantly fresher tires, how did it do at a normal SCCA STX points event?
Second(and third) in both STX and PAX. My codriver Brian finishing right behind me in both, but local Todd in a better prepped STX FRS edged us both out for FTD and class win. Todd has brand new AO52s, an OsGiken and some much more focused suspension, lightweight brakes and the allowed control arms for camber. It was super fun battling with both of them all day, and pretty cool that an FRS on street tires took not just PAX, which is pretty understandable, but also FTD. https://cimg5.ibsrv.net/gimg/www.mia...6b100e6243.jpg https://cimg9.ibsrv.net/gimg/www.mia...c45190e6c6.jpg Brian driving: https://cimg8.ibsrv.net/gimg/www.mia...57101655e4.jpg https://cimg9.ibsrv.net/gimg/www.mia...37c9470abe.jpg https://cimg0.ibsrv.net/gimg/www.mia...33d2ef2362.jpg I pretty much know by now that I need to "take it seriously" and throw some money at it to match Todd's prep level. Ideally tires, but I also want more chassis composure to handle Hoosiers for NSA TT5. |
Nearly current now.
This past weekend was a regional Tour event, so local fast folks were mostly absent from the local event. I have missed 50% of the Points Events so far this year, and had an open weekend, so I took the chance to claw back some STX points on Todd. No co-driver, and it was extremely evident that I was not able to get these 2019 AO52s up to operating temp. They had ~100_ runs when Nick gave them to me, and this was the 3rd events ive done, plus a codrive at the last one, so they're properly baked at ~140 runs. I was in group A, run first, work second. They ended up switching the day order to ABBA, so I had a crappy 4 hour break from run 3 to run 4. I sat on top PAX most of the day on my run 3, but Ryan took it on his run 6. I was able to put it together on my run 6 to claw back the STX win and overall PAX win. https://cimg9.ibsrv.net/gimg/www.mia...4c4e3ef18d.jpg https://cimg1.ibsrv.net/gimg/www.mia...adcbc53cca.jpg https://cimg2.ibsrv.net/gimg/www.mia...df1d122ce3.jpg https://cimg4.ibsrv.net/gimg/www.mia...fc4998ed31.jpg Parts rundown as of now: Tein Flex, regular off the shelf Whiteline bars and endlinks, 22mm front, 16mm rear. - this is the smaller rear bar and larger front bar that Whiteline makes. SPC front crash bolts, one per side JDL EL 4-2-1 header. JDL "Ultra Quiet" over/mid pipe combo. TRD intake TRD dual outlet catback stock diff Motul gear oils. 17x9 PF05 with 245/40/17 RE71R 17x9 6UL w/ 245/40/17 AO52 17x9 6UL w/ 225/40/17 Hoosier R7 |
Off come the Tein Flex Z, on go 949 Racing BRXidas.
500/500lb setup 949 camber plates 949 front endlinks Flipchips in max camber orientation. Still on Whiteline 22/16mm bars, rear on full soft. The Teins were ~340lb square and the bar balance was perfect for me in the recent autocross events, so I am hopeful the balance remains. I'll be running the same alignment as with the Teins as well, with -4.5 front, -2.7 rear, zero toe. NASA Mid Ohio is my annual BDay weekend late this month. The car is on e85, the Xidas are in, the 225/40/17 Hoosiers are mounted. I just need to remember how to drive. (this is the R&D set from Blub, so they're not perfectly shiny-new) https://cimg9.ibsrv.net/gimg/www.mia...2a7276f4b0.jpg https://cimg1.ibsrv.net/gimg/www.mia...dff91b5ed4.jpg https://cimg3.ibsrv.net/gimg/www.mia...5e5ffbc4de.jpg https://cimg4.ibsrv.net/gimg/www.mia...add6128978.jpg https://cimg8.ibsrv.net/gimg/www.mia...beab91d6c8.jpg Initial impressions to come after I get some time to play with knobs. I have an evening SCCA PAX challenge night event tomorrow... |
Interested to know how awesome the new Xida suspension will be. I'm looking out for reviews of that product. Supermiata has a lot of confidence behind them and it looks like they are the jam from what I've seen. I may be upgrading my NC from Ohlins to Xida next year.
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Originally Posted by Verwah
(Post 1626552)
Interested to know how awesome the new Xida suspension will be. I'm looking out for reviews of that product. Supermiata has a lot of confidence behind them and it looks like they are the jam from what I've seen. I may be upgrading my NC from Ohlins to Xida next year.
We have compiled all the NA/NB, NC ND Xida reviews we can find here: https://supermiata.com/xida-reviews.aspx |
Originally Posted by emilio700
(Post 1626644)
You have an 86? Nose heavy strut car can't achieve what a 300lb lighter 50/50 weight wishbone suspension car can
We have compiled all the NA/NB, NC ND Xida reviews we can find here: https://supermiata.com/xida-reviews.aspx |
Originally Posted by Verwah
(Post 1626647)
I have a 2013 MX-5. I realize the strut version is not comparable to the DWB version for Miatas. I've been reading what the Miata enjoyers are writing about, just wanted to comment on this car with them as well.
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Well, didn't you set all kinds of lap records with Blub? Why didn't you do something similar with an NC since it is so much better?
I say this as an NC and ND Xida owner. I just got a GR 3 weeks ago. |
Originally Posted by Chilicharger665
(Post 1626664)
Well, didn't you set all kinds of lap records with Blub? Why didn't you do something similar with an NC since it is so much better?
I say this as an NC and ND Xida owner. I just got a GR 3 weeks ago. Sorta hijacking Dan's thread, sorry :) |
Have you changed the spark plugs on it yet? I just did that job on my Wife's BRZ for the first time this weekend, it's a pain in the dick. Anyway, nice progress on the car! We picked up a set of the closeout 6ULs for her car last year, I like the way they look.
https://lh3.googleusercontent.com/93...-no?authuser=0 |
Originally Posted by paNX2K&SE-R
(Post 1626686)
Have you changed the spark plugs on it yet?
Agreed on the 6ULs, I always liked the 5lug 17" variants. Glad to have a few sets to cycle around. |
Yay maths!
193.66whp/161.61wtq is as good as 194/162 and i'm super happy with that. 194 peak whp works out to 180.25 NASA AVG. https://cimg4.ibsrv.net/gimg/www.mia...afef0db38c.jpg https://cimg5.ibsrv.net/gimg/www.mia...2e5b92707e.jpg Reminder that this car has 146k miles and 'just' a fancy coated header and a second hand OpenFlashTablet flash tune. I had no reason to expect 200+ like the healthiest and custom mapped cars are able to manage. NASA TT/ST rules treat my STI lip and Limited trim package spoiler as if they're 4" splitters and 74" Zebulon wings, so if I made any more power or wanted to pull all my interior out, i'd have to lose the lip and spoiler to 'pay' for the P:W space. Build A: 180 avg 2749lbs, declare 183whp -.1 weight factor +.3 for undersized tires -.7 A arm -.5 for 'splitter' spoiler is 'free' by giving up the BTM credit If I remove the lip/spoiler, I can pull the seats and attempt to get down to 2650 or so. In doing this, I would also give up the undersized tire credit. That would be offset by also losing the splitter and weight factor hits and gaining the BTM credit: Build B: 180 avg whp 2650lbs, declare 184whp +/- 0 for weight factor -.7 A arms +.3 BTM In a vacuum, I'm very confident that Build A would be faster if I had a real wing(Voltex, Zebulon, APR GT250, Gstream, etc) and a class-max 4" splitter. Alas, I do not.. So, I'll throw it on the scales tomorrow or Wednesday and see where it lands with aluminum Xidas, lighter weight 6ULs and Hoosiers with the plan to aim for 2650lbs. That will be simply pulling all the seats out and slapping in my old Recaro SPG on a PCI bracket. |
On Wednesday last week I spent the day installing the Xidas and resetting the alignment/setup.
I attempted to contain the variables by running the same setup as before, with just the springrate and damper change. Balance was off, car was loose. It definitely turns better, too betterer. My stock rear bar is long gone, so my only easy fix is to remove the rake and lower the rear end, or pull camber out of the front. Local seasoned national tour STXer beat me by his smallest margin yet, and I'm still on a customer's 2yr old scrubs. We're getting there. I think with another event or two I can knock the rest of my rust off and win on scrubs before buying fresh tires for 2023. I ended up 4th in raw time, 3rd in PAX, 2nd in STX. ~85 total drivers. https://cimg2.ibsrv.net/gimg/www.mia...72bf865025.jpg https://cimg5.ibsrv.net/gimg/www.mia...5ea472dc05.jpg https://cimg9.ibsrv.net/gimg/www.mia...ed78ffbb65.jpg |
Outstanding result on ancient tires.
Can you share your alignment or is that top secret? |
I've always preferred a rear bar at autox, even if it's soft.
A lot of the STX guys (myself included) are running the Mann 13mm rear bar. Joining us for nats? Didn't see you on the reg list. |
Originally Posted by emilio700
(Post 1626707)
Outstanding result on ancient tires.
Can you share your alignment or is that top secret? It was -4.5 front, -2.5 rear which was the max natural rear zero toe all around. The Xida swap ended up at -4.9 front with the max negative chips and the plates near the middle. I have the whiteline offset bushings for the rear to install when I can reprioritize the time, as the rear could definitely use a bit more negative.
Originally Posted by e1_griego
(Post 1626721)
I've always preferred a rear bar at autox, even if it's soft.
A lot of the STX guys (myself included) are running the Mann 13mm rear bar. Joining us for nats? Didn't see you on the reg list. I've been asked to be a backup codriver, but wont be bringing my own car, we'll see. This really is my daily driver, I'm just a degenerate who craves competition and broke my racecar too badly. |
Porky car is porky.
All four OEM seats removed and the Recaro SPG in on the PCI dual locking slider got it down to ~2560 at 1/4 tank. That puts it near 2750 with my 200lb chiseled mass. I'll need to run it pretty low on fuel to stay near that 2750, but these cars apparently fuel starve below 1/2 tank, so I'll have to be cognizant of that. I did not have any fuel starve at Nelson Ledges, but NL is a primarily right handed corner load, while Mid O T1 is a fast ~88mph left which is prime 86 fuel starve opportunity. Regardless, its fat enough to keep the "small tires at 2750+" credit and that credit allows me to also eat the Splitter penalty and give up the BTM credit. 2750lbs Declaring 183.33whp -.1 for weight factor +.3 for small tires at big weight -.7 for A arms -.5 for splitter Obviously a real splitter and a real wing would be free speed on top of whatever I am able to run this weekend. https://cimg1.ibsrv.net/gimg/www.mia...230f3668ca.jpg https://cimg5.ibsrv.net/gimg/www.mia...858b63dbbd.jpg https://cimg1.ibsrv.net/gimg/www.mia...947107a7d3.jpg |
Crazy mixed feelings this weekend.
I set high goals to win TT5 and even challenge the Club Course record in my stupid daily-driver-with-Hoosiers. Short version, that didn't happen. Feel free to look at the pics and scroll right past the rest. Club Course day one: 1.39.798 2nd place by .023 to a 39.775. Both of us would have also won TT4. Pro Course day two: 1.38.134 2nd place to a 37.214. Both of us would have also won TT4. Starting with event prep, pads and tires. Nothing else. Off came the Stoptech Sports "309" pads I street/AX and did one HPDE at Nelson Ledges on: Left front inner had some chunking. On went Hawk DTC60 square. https://cimg2.ibsrv.net/gimg/www.mia...ef5da40f38.jpg The new rig to replace the Land Cruiser: 2008 Coachman "Freedom Express" FX21QB 6.0L LS, 4L80E 3500 dually chassis. https://cimg2.ibsrv.net/gimg/www.mia...f800cf8183.jpg Full of corn for min weight and fuel starve prevention. https://cimg4.ibsrv.net/gimg/www.mia...70ed253e25.jpg Posted up early on Friday to work from the paddock for the afternoon: https://cimg0.ibsrv.net/gimg/www.mia...98248d20c3.jpg Racecar status: https://cimg5.ibsrv.net/gimg/www.mia...c1df218de7.jpg Day One: Club Course: As I said in a previous post, the Pro Course record was set at 2019 Champs, so I knew it was way out of reach. The Club record was set regionally by a customer, in a very similar FRS but with a wing. He never let me put all the camber in the car that I thought it wanted, so I hoped I could offset his wing/cage/development familiarity with a more aggressive setup and home track Sending It. The problem is that I used his now 2 year old scrub tires. https://cimg1.ibsrv.net/gimg/www.mia...5fab4d65d8.jpg I ended up a second off the record and .02 off the win. Mid Atlantic fast guy Ricardo snuck it out on the last lap of the last session while following me. He drives a splitter/wing, cable throttle S2K on 255/40/17 RC1s2 on 17x10" wheels, with 20 mph WHP than me. https://cimg6.ibsrv.net/gimg/www.mia...e6fc40cac2.jpg https://cimg4.ibsrv.net/gimg/www.mia...af378dcc17.jpg I turned knobs every session testing in pretty large 3 click increments on both sides of 'middle', was a pyro nerd the first two sessions to get the tires happy, looked over data with Tom O'Gorman. Did everything to try and get up to speed, but the car just never felt like I wanted it to. I'm pretty sure I know what it needs but need to spend a day confirming stuff on the setup pad and maybe try again at an Autointerest HPDE next month. Trying to be brief: The front axle is amazing. Front grip, turn-in, steering feel, etc are all amazing, sharp, exact, direct. The rear? The opposite, disconnected, dissimilar, numb. The car never tried to kill me, never did anything to catch me out, but was most definitely loose on entry, loose under braking, and loose at initial throttle input if it was anywhere near 90% lat grip. I was able to save/catch/correct two BIG slides in T1 and stay on the pavement, but the difference between the axles was troubling. My 22/16mm whiteline bars are already full stiff front/full soft rear. My only tuning tool left was to just drop the rear ride height or remove camber from the front to make the front work worse. I had dropped the rear 4 turns after the AX as a prep and dropped it two more. It is nearly level now and that was as far as I took it. Today I ordered a Mann Engineering rear bar which is step one. Step two will be to install the Whiteline RUCA offset bushings I have at the shop for more rear camber. I also know Emilio is going to read all this and say "well duh, you used ancient brick tires for new setup testing, of course it handled like crap" Looking at the data, it was clear my rustiness was the major culprit. I had an AIM theoretical of a 38.252 on day one. two different places I could have saved quarter seconds. It was not a small failure on my part. I ran only two laps sub 40, but 11 laps in the 40s and several more in the 41s. Two Bs and a bunch of Cs got a degree(podium) but it wasn't what I hoped for. Anyways, all that to explain day two: Slept on it and made it my Day 2 goal to be as smooth as possible with turn-in steering inputs and much much softer with brake release in order to clean up/prevent all the small wiggles and mistakes that clouded all of day one's laps. Keynote: These DTC60s are terrible and I now vividly remember why I love my GLoc R16/12 setup so much. A big chunk of my rust was knocked off and day two went much better. https://cimg8.ibsrv.net/gimg/www.mia...dcb113a123.jpg Session two I threw a CEL after 4 really hard back to back flyers and decided to park it for the day. I had also burned through all of my e85 and another full session probably would have resulted in a min weight DQ for the day. So for session 4 I hoped into a buddies ST6 car for a TT6 rip. Those four laps were good for the TT6 win and the fastest ST or TT6 miata lap of the entire weekend. I was home. https://cimg0.ibsrv.net/gimg/www.mia...85b8a86f53.jpg After my BRZ was loaded, another buddy parked his GR in my spot to rub it in. https://cimg9.ibsrv.net/gimg/www.mia...86501b474b.jpg So anyways, 86 make alot of sense but mine definitely needs more development. Hopefully it never gets said development because my K24 racecar should be on track somewhere before the end of the year... hopefully. |
Rule #1 for setup: use new tires.
Then use stop watch to judge tire deg and replace at desired slowness. Rule #2: don't race a subaru. The end. |
Having driven a GR now, I am a fan. It is so much better than the GT. Like NC to NB better.
Anxious to see how competitive you are with some stickers. |
Ricardo's full aero, 255/10" RC1s2 S2K:
https://cimg3.ibsrv.net/gimg/www.mia...a18b32121f.jpg Giving the left front an absolute workout: -4.9* static on the front axle and the pyro said the whole left side wanted more. https://cimg1.ibsrv.net/gimg/www.mia...4d5fc624b3.jpg https://cimg5.ibsrv.net/gimg/www.mia...44e1203ae1.jpg Lifting the inside front a smidge: https://cimg6.ibsrv.net/gimg/www.mia...01ba6dd654.jpg |
NASA Great Lakes
Mid Ohio Sportscar Course, Club Course layout w/chicane. August 27, 2022 Second place lap by .023 seconds. :( Second place again Sunday, but no video. 2013 BRZ Limited 193.66 peak, 161.8 ftlb Prepped for SCCA STX: JDL 421 EL header JDL UltraQuiet catted front/overpipe combo Tanabe Medallion catback TRD intake OpenFlash Tablet tune 500/500lb 949 Racing Xida coilovers Whiteline 22/16mm swaybars Stock RLCA to avoid NASA penalty 17x9 +40mm 949 Racing 6UL wheels 225/40/17 Hoosier R7 ST/TT build: 2750lb min weight, 2763 lowest actual weight. 183 NASA Average WHP claimed, 180.2 actual. -.7 for A-arms -.1 for weight factor -.5 for "splitter"(STI front lip counts, since it is not BTM) +.3 credit for small tires over 2749lbs No BTM credit since Limited trim rear spoiler and STI front lip. No BBK, no RLCA, no ELBJ. Total mod factors: -1.0 Several 1:40 laps, only 2 sub 40. 1.38.252 was the "theoretical" from AIM. Definitely lots of opportunities for cleanup and improvement, most of them annotated. |
It is kind of funny, I'm in the same boat with my BRZ after the K swap. I always figured the issue would be front grip with these things, but the front feels pretty good and the rear is where I'm like what is going on back there.
Oh, and by front feels good I mean other than the EPS cutting out. |
https://cimg0.ibsrv.net/gimg/www.mia...0d2fd892bc.jpg
In a perfect mix of exact science, procrastination, bigger priorities and regular life, I have managed to make only one change at a time. So, even though I knew the parts combo was "wrong" I waited until yesterday to put the correct rear swaybar on the car... https://www.mann-engineering.com/pro...stable-swaybar Its basically a Supermiata rear bar but for the 86 chassis. OE level stiffness, adjustable to softer. It is the hot ticket for most autocrossers that don't do dual speedway style Karcepts bars front and rear. I gambled on the middle setting, a step softer than OEM since the hot formula I am trying to emulate requires front roll center correction I am not allowed to have, so I erred on the side of caution. It was perfect. Losses by .059 and .016 to the local STX fastguy have been overwhelmingly countered with last night's victory by .236 https://cimg4.ibsrv.net/gimg/www.mia...076303d27b.jpg https://cimg9.ibsrv.net/gimg/www.mia...c2844d3ff0.jpg https://cimg3.ibsrv.net/gimg/www.mia...8c47117014.jpg Pictured with my buddy's vette. He was FTD and I was #1 PAX. https://cimg6.ibsrv.net/gimg/www.mia...53328ebba5.jpg https://cimg1.ibsrv.net/gimg/www.mia...947bd6d775.jpg Last part on the shelf is the Whiteline RUCA offset bushings... |
Yass
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Nice, for a Toyota ... :laugh:
What's with the reversed 'TT5' on windscreen :confused: Are you running an LSD, looked but couldn't see? If Torsen, you'll need to keep that inside rear on the ground ... |
Originally Posted by Gee Emm
(Post 1628115)
Nice, for a Toyota ... :laugh:
What's with the reversed 'TT5' on windscreen :confused: Are you running an LSD, looked but couldn't see? If Torsen, you'll need to keep that inside rear on the ground ... Reversed TT5 is for viewing in the rearview mirror of cars in front of me on track. A huge consideration in STx classes, but still a nice to have in TT. Yea, LSD, stock Torsen. I have not had a single inside wheel spin-up problem yet, even on Hoosiers with a bigger 16mm Whiteline rear bar. As much as i'd love to upgrade to a OSG, I feel like that is a really high hanging fruit on this car, especially in my usage/budget. |
We never found a pressing need for the OSG in our 86 build either. Not like the NA/NB where the much lower locking ratio and reduced droop travel hurt it more. No doubt the OSG would be an improvement in the 86, but well down the list in NASA ST build points priority IMO.
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Thanks for the replies gents. The Toyota reference was tongue in cheek ... and I agree with your riposte for the record!
Interesting that the chassis makes that much difference. I was eyeing off a clutch pack of some sort for my NB racecar due to the tradeoffs needed to keep that inside rear planted, but then I pulled the plug on the whole project before doing anything about it |
Building on the theme of "exact science, procrastination, bigger priorities and regular life" I have now finally made one more change to the backup TT5 BRZ: Installing the Whiteline RUCA offset bushings for more negative camber.
Between my purchase of these bushings and their install, NASA has since allowed us a "free" non-penalized arm per axle for the express purpose of camber generation. So, if I were starting from scratch today, I would just do an STX legal RLCA instead and save myself a days work of pressing bushings and swapping RUCAs. RLCAs are soooo much easier. Other rule changes since last time out include ST5/TT5 dropping down .5lb/hp to 14.5:1, from 14:1. This actually helps my particular car, but also makes all previous records that much harder to approach/reset. A-arm penalty is now a bit smaller, .5 instead of .7. This technically helps claw back 'some' of the overall class slowing, but not a huge change by itself. BRZ is being thrust into TT duty once again as my kswap, while physically in the miata, has not yet run/started. So, Mid Ohio in the spring, here we go! Gone are my 2019 DOT scrub 225/40/17 R7s, and arrived have a set of 2022 DOT RE71RS. I still have the second/fresher set of 2022 AO52s as well. Changes since last Mid O: A bit higher ride height, the rear swaybar, and an alignment tweak. The height and bar were done last year and showed good results in autocross, alignment tweak happened yesterday. Alignment is now: -5.2 front (up from -4.9) -2.8 rear (up from -2.2 with the whiteline bushings maxed out for most possible negative) https://cimg6.ibsrv.net/gimg/www.mia...b94a5e7d66.jpg https://cimg8.ibsrv.net/gimg/www.mia...94341b1352.jpg https://cimg0.ibsrv.net/gimg/www.mia...7cf2656867.jpg https://cimg2.ibsrv.net/gimg/www.mia...38b45ef4ac.jpg |
Those things move. Problem may be worse if only part offset used, due to Physics, Forces. The solution is to put a small dob of weld on the face, which locks the bush against rotation. If the arm, offset bore, and bush centre line are all more or less in a single line you will probably get away with it, but worth monitoring.
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Originally Posted by Gee Emm
(Post 1636688)
Those things move.
Theyre threaded internally and essentially double butted from one side and locked on the other side. They don’t get a through-bolt, they get a separate fastener from each side of the joint. Lateral force on the cam inside the bushing would have to spin the serrated edge against the subframe and both bolts that are lock washered. Nothing like the offset bushings in the FLCA of my miata. |
OK, from the photo posted they seemed exactly like mine (FLCA), held in place by friction against the serrated end surfaces - and the friction was overcome . Nothing I could do by tightening them with the alignment bolt would hold them in place, next event/run same/same. If the physical arrangements are different, and/or the loadings on that arm are lower, hopefully your experience with them will be different too.
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Since I was here in August(best lap on Pro course at that event was a 1:38.1), the class has had a few changes in the rules.
-Down to 14.5:1 from 14:1. -A-arm penalty down from .7 to .5 -One free control arm PER WHEEL for camber correction, plus an additional toe link in the rear are now free. My car's min weight went up enough that I either simply ate the extra weight or now had to remove the front lip I currently take the "splitter" penalty for. I chose to eat the weight in the form of not swapping to my light weight single exit exhaust, which might also cost me a horsepower or two. I also elected to run on 245/40/17 RE71RS and AO52 tires instead of the same set of 225/40/17 Hoosier R7s scrubs that now even older with even more untold heat cycles. New Centric hubs went on during the pad swap. DTC60 in for the weekend. https://cimg3.ibsrv.net/gimg/www.mia...d5d51fc4c5.jpg Rain all night Friday and most of Saturday. One dry session before lunch before it rained again and dried again for the 5:30pm TT#4 session. https://cimg6.ibsrv.net/gimg/www.mia...ebed50a428.jpg https://cimg5.ibsrv.net/gimg/www.mia...2885a79103.jpg https://cimg8.ibsrv.net/gimg/www.mia...7a1ab50f46.jpg https://cimg2.ibsrv.net/gimg/www.mia...cad95f2a43.jpg I ran the 71RS Saturday and moved to the AO52 for Sunday. Best lap Saturday was 1:38.4 on the 245/40 71RS. Best lap Sunday was 1:38.7 on the 245/40 AOs. Reference 2022 lap 1:38.1 on 225/40 Hoosier R7 This was my first time track driving on modern super 200s and they definitely move around a lot under braking compared to Hoosier R7s. Car felt way better on track lifted up off the bump stops, and the rear bar change was also a great improvement. I really dont have any balance quibbles at all anymore. Its taken alot of time to get here, but the car actually lets me adjust line in T1 and carousel with throttle modulation and finally felt like an intuitive, connected, single vehicle. Gone was the disconnected front axle/rear axle sensation it had last time out on track. It has always felt good at AX, even on the Teins, but now it also feels great at track pace. I actually had fun just doing laps all weekend in wet/drying/damp/mixed/snow/sleet/whatever conditions. Its just a bigger 194whp Miata now. So, full rundown for my own notes and anybody wishing to replicate: 949 Racing Xida 500/500lb 949 Racing front swaybar links Whiteline 22mm front bar Mann Engineering 13mm adjustable rear bar Whiteline rear swaybar links Whiteline offset RUCA bushings Whiteline rear diff mount bushings -5.2* front -2.8* rear zero toe front ~1/8" toe in rear (not sure what slipped from my zero setting, as I was super ---- about making sure the RUCAs were symmetrical going in) Hardware changes if I was building one today: RLCA for camber adjustment(instead of the RUCA offset bushings) now that NASA gives one free arm. SCCA requires the bushing to be rubber/urethane, and only allows one rear arm to be swapped, so again a Whiteline or SuperPro variant works here. Competitively? I was 1 second Saturday and 1.4 seconds Sunday off Nick Dugdale in his 2550lb FRS with a wing, splitter and 255 RC1s2. His ACE header and CSG/ECUtek tune make a few less horsies than my JDL/OpenFlash combo but he gets all that weight reduction allowance from the tire credit. I was still claiming Hoosier R7s and the same aero as him, even though I ran a "lesser category" tire and only have OEM/STI lip/spoilers. My car can't easily get any lighter, nor can either of us easily make any more power. I need to add a wing and HoHos to put up a fight, but both are outside the scope of what my backup trackcar should be doing... Neither of us had anything for the cable-throttle S2000s that both set new records. |
Cleaned up for street and AX duty. I am super duper hopeful that the miata will be back to track duty soon, so the NASA stickers came off.
https://cimg0.ibsrv.net/gimg/www.mia...56a5f24f39.jpg https://cimg2.ibsrv.net/gimg/www.mia...15f394de5c.jpg This weekends course was very power-friendly, and I got raw timed by a handful of things, including this Focus RS, an STU Cayman and my buddy Nick in his STR ND2. I won STX, was 4th in PAX and 3rd in our regional "ST-all" group. Car was great. Tires got greasy. This will be the last competitive outing for these 2021 AO52s. Time for them to go away. |
This popped up on socials, but none of the paid photog shots were worth buying this time.
https://cimg5.ibsrv.net/gimg/www.mia...3d788fc5b6.jpg |
An unfortunate series of events had me running HPDE4 at Pitt Race.
My ST5 Miata wasn't ready and TT5 was sold out due to NASA Championships coming to Pitt next month. So I had to drop my registration all the way down to DE4. Ran it oldschool. Packed the track wheels, e85 jugs, tools, cooler, chair, etc all inside the BRZ and left the RV and trailer at home. https://cimg8.ibsrv.net/gimg/www.mia...360fb75a4a.jpg https://cimg9.ibsrv.net/gimg/www.mia...d9c633806f.jpg |
My Kmiata rolled off my 2post finally so i was able to get the BRZ in and address a couple updates.
New style heim joint 949 endlinks for the Xidas, and their new velco shock covers went on during an alignment and corner balance checkup following the Pitt Race weekend. Only setup change ive made is raising the car up another 3-4 turns. It is now at roughly a 4.8" front pinch and 5" rear pinchweld. Also finally went to an autocross on my RE71RS scrubs after theyve seen two track weekends. Car was amazing yesterday back in STX trim. Biggest gap I've put on the local fast STX car(lightweight brakes, Giken diff, etc) and I ended up #2 Pax and #3 raw overall. 6 tenths over the rest of STX and only got beat by Danny Popp's CAMS C7(raw) and an FStreet SS 1LE(raw + pax). May have been a great day from me and a bad day from Todd Kunze, but ive always been on junk tires and consistently close to him, winning/losing by tenths on 2-4 year old scrubs the last two seasons. Rumors of STX changing have me kinda wanting to look at taking this to SoloNats next year, or at least a couple big Tour events. https://cimg4.ibsrv.net/gimg/www.mia...5eca41de73.jpg https://cimg2.ibsrv.net/gimg/www.mia...49d753a7ca.jpg https://cimg3.ibsrv.net/gimg/www.mia...89257bcd17.jpg |
The car was so good this weekend that I have been thinking about ways to make it better and "take it more serious."
There isn't much room left in SCCA STX prep, but I could: -Buy new tires. RE71RS are the most affordable of the top three(71RS, AO52, CRS) at the moment. -BBK. brake calipers and rotors are open. Many folks do a stoptech or wilwood kit with 2pc rotors for weight reduction. This would require taking a penalty in NASA TT5. -Seats. I have a Recaro SPG i often swap in on the driver's side, but could move it to the passenger and upgrade/renew my side. Again, weight reduction. -Battery. More weight reduction. -Diff. I could slap in an OSGiken. -LCAs. NASA now allows one arm free, so I could go back to my stock RUCAs and replace the RLCA to get the camber the car actually wants, as the offsets do not get me far enough. This wouldn't be a huge expense and would actually make the car faster in both... |
Originally Posted by doward
(Post 1640139)
The car was so good this weekend that I have been thinking about ways to make it better and "take it more serious."
There isn't much room left in SCCA STX prep, but I could: -Buy new tires. RE71RS are the most affordable of the top three(71RS, AO52, CRS) at the moment. -Seats. I have a Recaro SPG i often swap in on the driver's side -Battery. More weight reduction. -LCAs. NASA now allows one arm free, so I could go back to my stock RUCAs and replace the RLCA to get the camber the car actually wants, as the offsets do not get me far enough. This wouldn't be a huge expense and would actually make the car faster in both... New year. New autocross season. Even more peer pressure from the local buddies to do a national tour event or something bigger and "more serious" but i dunno... I absolutely crammed in a bunch of prep on Saturday. New tires, front ARP studs, Whiteline RLCAs, Whiteline shifter bushing insert thing, Recaro SPG back in, and attempted to swap my Deka ETX9 in, but couldnt source M6 to SAE posts anywhere locally :( https://cimg3.ibsrv.net/gimg/www.mia...93f630995f.jpg https://cimg7.ibsrv.net/gimg/www.mia...30cc43e327.jpg https://cimg6.ibsrv.net/gimg/www.mia...7448264778.jpg https://cimg7.ibsrv.net/gimg/www.mia...2a0b44711c.jpg https://cimg1.ibsrv.net/gimg/www.mia...0fd1587d71.jpg https://cimg1.ibsrv.net/gimg/www.mia...22bf5f7750.jpg https://cimg4.ibsrv.net/gimg/www.mia...b3b535e00d.jpg https://cimg2.ibsrv.net/gimg/www.mia...fcfd5bb5c9.jpg |
Originally Posted by doward
(Post 1650423)
New year. New autocross season. Even more peer pressure from the local buddies to do a national tour event or something bigger and "more serious" but i dunno...
I was the big fish in a little pond, and looked at the State level series askance, thinking it all looked a bit serious and daunting, out of my league, and I was quite comfortable where I was. But I was encouraged by one bloke in particular who was competing there, gave it a go, struggled at the first round, won the next two (held at my home track) and, finished the year with four wins, two seconds and a fourth to take out the class win first go.. Go on, do it! |
I'm not a never-been, and certainly not afraid of competition. I did SoloNats in 2017 in one of STRs peak years and i've driven a couple National Tour events. None of it in my own car though, as i've never done this much autocross-specific parts allocation. In a world where i'm not more focused on w2w and "ReAl" track driving, i would definitely be willing to travel overnight and shag cones for two days of autocross, maybe.
Anyways, onto Sunday. The biggest change was that I bought brand new 200tw autocross tires for the first time since my Gen 3 Nickel 15x9 6ULs arrived back in 2015? I've been running the last few years on friend's/customer's high heat cycle scrubs. The other big change was the RLCAs. As noted a year ago(!) NASA changed their ST/TT allowance and made the SCCA STX-allowed RLCA a freebie. So off came the Whiteline urethane offset bushed RUCAs and on went the Whiteline RLCAs, and unlocked was another full degree of rear camber(if i wanted all of it.) Now at -5*/-3.1* ish: https://cimg2.ibsrv.net/gimg/www.mia...1ac39f8e9a.jpg https://cimg5.ibsrv.net/gimg/www.mia...f352ad1108.jpg The fresh tires changed the car dramatically. It was very neutral and placeable and generally well set up for how I wanted to drive it last year, while also being fast enough to sneak out some #1 PAX. This weekend it was absolutely hooked up. It had so much more rear grip on throttle and really seemed to pull the outside rear tire around, without upsetting the rear axle and causing any true oversteer. It was awesome. I won STX(and the local catch-all ST class). One other fast/national caliber car/driver in a field of 10+ STX. I topped PAX Exceedingly rare for me is an overall FTD! https://cimg8.ibsrv.net/gimg/www.mia...26d1b512ad.jpg https://cimg2.ibsrv.net/gimg/www.mia...0d5240105d.jpg |
GETTIN it. Nice work Dan.
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That's a Result!
OK, seems that was a misguided comment, apologies. |
Nicely done. Fresh tires :)
86 Torsen feels like the S2000 Torsen to me. Relatively high locking ratio. When the grip is good, the car rotates under power just the right amount. Never felt the need to put an OS Giken into ours. NA/NB Torsen in contrast, feels like a much lower locking ratio and the OSG transforms it. |
Scope creep alert!
https://cimg2.ibsrv.net/gimg/www.mia...f8b8842680.jpg Karcepts 86 Front Sway Bar Kit - 0.804" Hole 1/1 = 235 lbs/in Hole 1/2 = 254 lbs/in Hole 2/2 = 272 lbs/in Hole 2/3 = 295 lbs/in Hole 3/3 = 318 lbs/in Hole 3/4 = 347 lbs/in Hole 4/4 = 375 lbs/in Kit Weight = 7.5 lbs |
Interested to see offset mounting listed, I have long used that (on occasion) but I think this is the first time I have seen it quoted.
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