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Haha, not intentional. He had a wild rear-mount radiator setup he was working through and it air locked and just ran without coolant. It literally ran until it got so hot it had next to no compression and wouldn't run. Then he let it cool down in the pits and it fired right back up. He said compression was fine on it after he got it home and did a comp test.
We had another young kid at the track do something similar with his stock-ish 1.6, ran a session completely dry. That motor survived too, just was less surprising since it was on stock power.
IN to see your results, I'm going with almost exactly the same brake setup and was planning on keeping the stock M/C to see how it feels first, then upgrading if necessary. Depending on your results, I might just upgrade right away.
Keep up the good work, this has been a fun thread!
Thanks dude! Glad I've been of some entertainment haha.
That's legendary. I'm sure that must've incurred SOME sort of additional wear on the motor but it's awesome it still started right up. I don't have an apples to apples story but I checked my oil after my first track day and due to an oil leak, it was about a quart and a half below the fill mark. I'm sure my bearings didn't like that but I ran the engine for another ~14 track days, half of which the car was running a turbo.
I'll keep the thread posted with impressions about the master cylinder after this weekend's track event. I never felt a need to go to the bigger MC after I installed the BBK and sport rears. Honestly the pedal felt basically identical to my stock setup. That being said, having gone to the bigger MC, I don't think I'd want to go back. I've only driven it on the street but the pedal feels so much more supportive. I think that'll add to confidence and control on track, but will wait till this weekend before I say anything more.
Originally Posted by Stock
Dude lucked out, when I lost coolant I blew a freeze plug and lost compression.
Oof, that's rough. What blew to cause the coolant leak?
Oh I like that master cylinder, even if overkill. In for how it all works out for you this weekend. Have fun out there. Also, that engine @Fireindc is talking about is the only one I’ve ever seen boiling oil. That was quite the sight to behold hahaha
Alright, everyone reading this with a BBK, go buy a 1" master cylinder. What a difference. It'll make you faster and more good looking.
Video clips to come tomorrow because I left my camera in my van.
The car ran absolutely killer at Chuckwalla this weekend! Unfortunately, luck (and my skills) would not be on my side when it came to competition.
Friday and Saturday started great. I made it up to the track at ~10pm Friday night, knocked out, and was up at 5:45 the next morning. The NASA event this weekend was a crossover event between the SoCal and AZ regions and the paddock was STACKED. There were enough entries that TT ended up being split into two groups and I believe there were almost 30 entries in Spec Miata for the weekend. Drivers meeting was at 7:30 and our group was on track for practice at 8:15 so I wanted to get an early start. I managed to get my car checked over by tech and get my registration and transponder well before the drivers meeting, sorta out of character for myself.
Session one went pretty well for the first half. Having not been to Chuckwalla since last March, I got to work reacquainting myself with the track and new brake master cylinder. Holy hell, the firm pedal from the 1" master really helps! The increased pedal pressure took a sec to get used to but was by no means strenuous. The firmer pedal and earlier bite point helped my braking consistency massively. Furthermore, it seemed to massively reduce the effects of the pad knockback I've been dealing with. I only got knockback (or fluid fade, I still don't know at this point) once during the day and instead of the pedal going to the floor, it just pressed in slightly farther than usual. Very preferable to the previous scenarios where the pedal would do nothing for a single braking zone.
Oh right, session one. I got four or five laps down and started feeling just the slightest bit of confidence on track. Coming towards the start line, the path ahead of me was clear and I decided I should try to set a hot lap. This was still practice but my top time was going to dictate my grid spot in the next session. Ok let's go for a hot lap. Ah sh*t, turn one I'm four wheels off in the dirt. Whatever, it was a good shot. Slid the car all the way around the outside of turn two and get myself back on the track after letting a couple cars pass me. I'm behind a Lotus Elise now. Made it another four turns and now we're coming into the chicanes. Braking zone, good. Turn one, good. Turn two, the Elise oversteers and spins to the inside of the track. Hell no, I'm not getting involved in that. Dove into the dirt on the inside of the last chicane to avoid a bonk. Two dirt excursions in the same lap. New achievement unlocked. Got back on track just in time for the checkered flag to come out. Woo!
Session two was uneventful. Got a little quicker but still wasn't at full speed yet. I did manage to miss a fifth to fourth downshift and hit second instead. For a split second. I did get to see my tach max out, so that was cool. Still gotta get an MR shifter for this thing. I'm getting better with finding fourth, but it's still giving me trouble. Anyways, I figured I'd be at full speed by session three or four. Finished the session and hopped into the stands to watch my buddy Chris in Spec Miata. Pulled out my phone to film for one lap and caught a perfect angle of him pulling a double pass into turn two.
So session three starts, I'm ready to pull a solid time now. Pull out of the pits and I'm following a heavily modified E46 M3 on my out lap. Dude's going a little slower than the rest of the pack ahead of us but I figure he's just building a gap between the guy in front of him. No sweat. Then a guy in a brand new Shelby GT500 passes me and gets on the guy's tail. Big no no on a TT session out lap. Great, this guy's gonna be clueless. We cross the finish line and the M3 and GT500 drop me immediately, as expected. Turns one and two the E46 is gone and I'm already up the Shelby's tailpipe. Ok, I'm in this guy's mirrors, he's gotta get the message and let me pass. Nope, we hit the next straight and he walks me again. Catch the guy in the braking zone and tail him through the next couple corners and he gaps me in the straight again. This continues for the next fifteen minutes until the checkered flag drops. Agitating.
Final session is shaping up to be a good one. I talk to Shelby guy and the grid organizer and got them to grid me in front of him. Ok cool. I'm fully warmed up and ready to set a heater. We get sent out, I pull out right ahead of the Shelby, get onto the track, and immediately have smoke pouring out of my left front wheel well. What the f*ck, how did I miss whatever's going on up there? Hazards on, start pointing by all the cars behind me. I get through about four corners going slowly before an orange speck of something starts appearing out of my wheel well. What the hell? Go into another corner and more orange. God dammit, I ran over the cone next to my grid spot and am dragging it along in my wheel well. I made it halfway around the track and luckily burned a big enough hole in the cone that it popped out of my wheel well. Sweet, crisis averted. Unfortunately, I was now behind an additional ten cars. Wound up in traffic for most of the session. Got two clean laps in which I botched by missing fifth gear two separate times, then dropping two wheels off the exit of turn 12
Ah well, that's how she goes! I PB'd with a 1:59.54, good enough for 6th place out of 9 in TT3. Bummed that I didn't get to lay down a perfect lap for competition but I'm glad to know the car should run 1:58's or 57's if I play my cards right next time. Onto NASA Willow Springs next month!
Camped in Joshua Tree last night and met some buddies on the way home in Riverside for a few-hour bike ride on the drive home today. Talk about a complete weekend!
Next week: Ordering BroFab rear hubs, and figuring out what MR short throw shifter to throw in my car. I'm getting better but so tired of missing shifts lol
One of the final laps of session three. Not my finest work but not bad enough to be embarrassed about. Gave the Shelby a lead coming into the lap but still got blocked in the last few corners. Bollocks.
One of the final laps of session three. Not my finest work but not bad enough to be embarrassed about. Gave the Shelby a lead coming into the lap but still got blocked in the last few corners. Bollocks.
Nice driving man you're having fun out there sliding that thing around! Hard to tell by the video and inputs but is it pushing/understeering a bit at higher speeds off throttle but when you get back on the throttle (with a quick spooling turbo I'm sure it's hard to balance the throttle) it starts to oversteer? Looks like a blast!
Edit: What kind of camera mount do you use? Just one mounted to the rollbar?
Thanks dudes! Most of that oversteer is actually happening at decel or part throttle. Most of these mid-high speed corners, the car doesn’t actually have enough torque to spin the wheels unless I initiate corner entries in an overly-aggressive manner. Most corners, I can actually exit with 80-90% throttle and it’ll stabilize the car rather than induce oversteer.
Some of this is probably due to the fact that the car’s got decent aero, but I had aero before the car was turbo’d so I don’t know how the car would act without it.
Thanks dudes! Most of that oversteer is actually happening at decel or part throttle. Most of these mid-high speed corners, the car doesn’t actually have enough torque to spin the wheels unless I initiate corner entries in an overly-aggressive manner. Most corners, I can actually exit with 80-90% throttle and it’ll stabilize the car rather than induce oversteer.
Some of this is probably due to the fact that the car’s got decent aero, but I had aero before the car was turbo’d so I don’t know how the car would act without it.
Gotcha that makes sense.. so mid corner if you lift a bit the rear rotates and when you get back on throttle the weight shifts to the rear and it reduces oversteer.. That sounds like you have it pretty balanced then. That makes sense power wise. At ~250whp or so with 245 square tires I expect to be able to hammer down and have good traction. When I did my first track day with the turbo on my S (did a big **** at the same time) and I was impressed with how balanced the car was with a giant **** and putting down the power was easy (~380whp on 255 square rs4s). Looks like a blast man!
Alright, everyone reading this with a BBK, go buy a 1" master cylinder. What a difference. It'll make you faster and more good looking....
Holy hell, the firm pedal from the 1" master really helps! The increased pedal pressure took a sec to get used to but was by no means strenuous. The firmer pedal and earlier bite point helped my braking consistency massively. Furthermore, it seemed to massively reduce the effects of the pad knockback I've been dealing with. I only got knockback (or fluid fade, I still don't know at this point) once during the day and instead of the pedal going to the floor, it just pressed in slightly farther than usual. Very preferable to the previous scenarios where the pedal would do nothing for a single braking zone.
That's awesome. I've been tempted by the idea more than once, and now I wish I had swapped over to the 929 1" master that's a bolt in part back when I changed out my MC. My NB2 has a 15/16" MC though, so the difference wouldn't be as dramatic.
Gotcha that makes sense.. so mid corner if you lift a bit the rear rotates and when you get back on throttle the weight shifts to the rear and it reduces oversteer.. That sounds like you have it pretty balanced then. That makes sense power wise. At ~250whp or so with 245 square tires I expect to be able to hammer down and have good traction. When I did my first track day with the turbo on my S (did a big **** at the same time) and I was impressed with how balanced the car was with a giant **** and putting down the power was easy (~380whp on 255 square rs4s). Looks like a blast man!
That's about precisely what it does. Maybe it's just the fact that I'm used to the car's current setup but it feels perfect. I'm planning on going to Xidas this season and upping my aero even more but I'm almost hesitant because I know it's gonna be some work to find this balance again haha.
At ~250whp on 245s, I don't think you'll have trouble putting the power down at all. You'll probably get some wheelspin on 2nd gear corners if you exit super aggressively, but with a steady foot it won't be a problem. None of us are doing this turbo Miata thing because we want our hands held, right? I would've bought a Corvette or something with traction control if that were the case haha.
Turbo on your S? What car are you referring to again?
Originally Posted by OptionXIII
That's awesome. I've been tempted by the idea more than once, and now I wish I had swapped over to the 929 1" master that's a bolt in part back when I changed out my MC. My NB2 has a 15/16" MC though, so the difference wouldn't be as dramatic.
Yeah, I wonder how much of a difference the 15/16" to 1" would be. Probably notable still, but from the 7/8" it was a borderline paradigm shift. Pulling the car out of my garage, I instantly felt like I'd been missing out from having run the stock MC for over a year.
That's about precisely what it does. Maybe it's just the fact that I'm used to the car's current setup but it feels perfect. I'm planning on going to Xidas this season and upping my aero even more but I'm almost hesitant because I know it's gonna be some work to find this balance again haha.
At ~250whp on 245s, I don't think you'll have trouble putting the power down at all. You'll probably get some wheelspin on 2nd gear corners if you exit super aggressively, but with a steady foot it won't be a problem. None of us are doing this turbo Miata thing because we want our hands held, right? I would've bought a Corvette or something with traction control if that were the case haha.
Turbo on your S? What car are you referring to again?
Nice. Ya it sounds like you have the car pretty balanced which is awesome. I'm sure Xidas will just make things that much better to be honest. Good shocks absorb imperfections much better and can be stiff but not unsettle the car. I have an s2000 (s2k, or S). Tracked it for a while N/A w/o aero and a couple years back I decided to YOLO and I wanted a turbo s2k track car so did a turbo on it (v-mount coolers help it stay cool on track). As prices have gone up on parts, motors, etc. I realized I needed to build a Miata that I could track and not worry about. That's why I'm here. Ya a Vette is probably the "easy button" for going fast.
Oh hell yeah! That looks like a blast of a drive. Sounds like the master cylinder worked well for you, and helped the feel some? Maybe something I should add to the list too if it helps feel.
What settings did you end up using for the camera? The video came out really well!
Thanks dude! Yeah, the master made a huge difference in feel. quicker brake engagement but I felt like it was easier to control the modulation because of the increased pressure needed to depress the pedal. I'd do the mod again for sure.
As far as camera settings go, I just opened up the app and turned the EV settings to -2.0. No other adjustments. I didn't post-edit the footage but could probably get the contrast and light balance a little better if I really wanted to put in the effort. Works great though! Thanks again for the mount. Showing your friends that you're going fast is definitely more important than how fast you're going.
If you get a 1" MC, get (or build, as they are pretty easy to do) a brace as well. Firewall already flexes quite a lot with the OE setup, will do even more with the increased pedal force required. We (dcbe.tech) built one a while back for a 1" MC, that has since become a standard item.
Good to know! I thought V8R were the only ones who made a brace for the 1" MC.
So anyways, since the car's been feeling so well-balanced recently, I decided I'd mess with my setup some more! Now that the car's in TT3 class, I'm allowed a larger splitter, and GTA Street class allows up to a 5" splitter. I'm running a 4" splitter right now and it's absolutely hammered, so I figured I'd make a new one and go a little bigger this time. My local Home Depot was having a sale on plywood this week, so I grabbed a piece and got to work!
I used my previous lip as a template and cut an inch wider all the way around, going three inches wider on the sides since they were previously flush with my front wheels. My splitter is actually attached to my undertray, making it much easier to swap out since I have the oil cooler and my ducting mounted to and sealed up against the undertray itself with silicone. The undertray is fine currently, and the splitter is only a few minute job to detatch.
Rough cut. I did the final shaping with the splitter on the car.
My buddies have few sets of wheel spats they made for their Miatas, so I plan to pick up a pair of those for my car soon. I also plan to make a set or two of end fences for the sides and see if those are any good with the setup. I think I saw a post from Emilio on here saying they're generally best used on a car with 8:1 or better P/W ratio, after the splitter, airdam and a proper wing have been installed. I'm currently sitting around 9.6:1, with driver in the car, but would still like to play around with them.
Final shape mostly dialed in. I'm anticipating cutting down the edges a bit.
To balance out the rear, I'm gonna make a bigger set of endplates for the wing and experiment with the AOA a bit. The current endplates are pretty small and I'm running a nearly-flat AOA right now. If need be, I can get a longer cord for the wing as well. ProCarInnovations uses the same cords for all their regular and swan mount wings and sells them at lengths of up to 67" (not that I'll go that wide. I'm currently at 60"). I'm also thinking about asking if they can make me a taller set of uprights, as these are low by Miata standards and only put the wing at a height of 8".
We'll see what it comes to. If the car ends up being super tail happy at speeds, I'll know pretty quick. Gonna be running Big Willow for my next track day and then again for the second NASA TT race of the year at the end of March.
Also, my Antigravity battery came in tonight. Gonna try and make some sort of mount for it tomorrow or Saturday and get that sorted as well. Should be a 23 pound drop from my current battery.
02-14-2024, 02:32 PM
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Ya a Vette is probably the "easy button" for going fast.
