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-   -   Adventures in PTE/TTE (https://www.miataturbo.net/race-prep-75/adventures-pte-tte-71342/)

blkmkiii 07-06-2017 09:39 AM

I would love to just take points for all non power mods and say I make 120hp. I would weigh X. I think in the rules already there is the 130whp rules/2415 lbs. But I do not come anywhere near 130whp. Make it so the people not making any power can have a lighter car.

cabowabo 07-06-2017 12:02 PM

Can always ask for a TTE* reclass and see how light Greg will let you get, but seems like you should be able to make more than 120whp. My buddy runs a junkyard motor in his 99 points build and it makes 130whp with stock ECU on dynojet. Can't remember if he has a header (I think so), but he's using a janky installed CXRacing intake (it's for an NA) and SM exhaust.

RacerJRP 07-09-2017 09:50 AM

What are peoples thoughts on the Mazdaspeed in TTE? It doesn't seem like it's handicapped enough to make up for having Torsen, decent enough suspension, and an extra ~50hp. I was running against one yesterday, that had a turbo-back exhaust, CAI, and Toyo RR's. I can't imagine it was scaling north of 2600lbs either... I could drive circles around the guy through the tight sections of the course, but he put multiple lengths on me every time the track went straight. No joke, he put 15+ lengths on me down the front straight after I exited final corned 4-5mph faster getting right to his bumper on exit.

Now, I'll admit my car is FAR from prepped towards TTE success, but this just doesn't seem right.

Bronson M 07-09-2017 10:18 AM

The real advantage of a turbo motor in a HP limited class is you can do some trickery with the boost curve to make that max HP at any RPM so you end up with more power under the curve than a similarly rated N/A motor. Just think of having that grunt off the corner that you have at 6500rpm but at 4500rpm...... There's never the wrong gear.

engineered2win 07-09-2017 10:36 AM


Originally Posted by RacerJRP (Post 1426579)
What are peoples thoughts on the Mazdaspeed in TTE? It doesn't seem like it's handicapped enough to make up for having Torsen, decent enough suspension, and an extra ~50hp. I was running one yesterday, that had a turbo-back exhaust, CAI, and Toyo RR's. I can't imagine it was scaling north of 2600lbs either... I could drive circles around the guy through the tight sections of the course, but he put multiple lengths on me every time the track went straight. No joke, he put 15+ lengths on me down the front straight after I exited final corned 4-5mph faster getting right to his bumper on exit.

Now, I'll admit my car is FAR from prepped towards TTE success, but this just doesn't seem right.


For starters:

Miata MX-5 turbo ('04-'05) TTE** 2600
Miata 1.8L ('99-'00) TTE 2410
Miata 1.8L VVT ('01-'05) TTE* 2400
So right off the bat you're TTE +14 points, which is +7 or +14 over the non-turbo NB miatas.

Then add the turbo penalty:

FORCED INDUCTION VEHICLES will add an additional five (+5) points to the total number of Modification Points to determine the final competition class. (Forced induction vehicles that have been classed or re-classed by the National TT Director based on Dyno testing are exempt from this additional five (+5) point assessment.)
So now your bone stock MSM is TTE +19.

You can get back 7 points by running a 205mm, since the TTE base tire size is 235mm.

Now you're a stock MSM with +12 points in TTE.

The easy button Hoosier R7 is a 10 point mod, so that's out. Your only options for tires are:

6) The following DOT-approved R-compound tires: Toyo Proxes RR, Hankook TD, Pirelli Trofeo R +5
7) The following DOT-approved tires and those R-compound tires with a UTQG treadwear rating over 40: BFG Rival S, Bridgestone RE071-R, Maxxis RC-1 (examples: Kumho V700, Kumho V720, Michelin Pilot Sport Cup & MPS Cup 2, Nitto NT01, Pirelli PZero Corsa, Toyo R888, Toyo RA-1, Yokahama A048, etc.) +4
8) DOT-approved (non-R-compound) tires with a UTQG treadwear rating of 120-200 (examples: BFG g-Force Rival, Toyo R1R, Dunlop Direzza Sport Z1 Star Spec, Bridgestone Potenza RE070, Kumho Ecsta XS, Yokohama Advan A046 & Neova AD08, Hankook R-S3) +2
Your best bet is to select the Toyo RR, and then you have 2 points to play with. Now your MSM is bone stock, 200+lbs heavier than the other miatas, and running slower tires. You will have to remove the exhaust and intake, any swaybar/spring/shock changes, as you only have the points for the OEM bits. You can run the Torsen and 6 speed, as the MSM came with them in the BTM. You're going to be up against other miatas with R7's, coilovers, int/exh, standalone ECU, possibly an OS Giken diff, and 200lbs of lightness. I'd expect a competitive NB to have >130whp, and my understanding is a stock MSM should dyno around 150whp. Is 20hp really enough to make up for inferior suspension, tires, and curb weight?

RacerJRP 07-09-2017 10:46 AM

^ When I said I was running, I meant I was running against. I was in a 94' base model. If I am reading your post correctly, this MSM should have been DQ'd as he would have blown through points with the addition of the exhaust and intake work?

Do we really think a near stock MSM is weighing 2600+ pounds? Seems extra porky.

engineered2win 07-09-2017 10:57 AM


Originally Posted by RacerJRP (Post 1426584)
^ When I said I was running, I meant I was running against. I was in a 94' base model. If I am reading your post correctly, this MSM should have been DQ'd as he would have blown through points with the addition of the exhaust and intake work?

Do we really think a near stock MSM is weighing 2600+ pounds? Seems extra porky.


*Minimum Competition Weight is the vehicle’s lightest weight with the driver and safety gear, during any competition session.
The intake is +1 and full exhaust is +5 points. The only way that could work was to get a dyno reclass from the TT director (Greg), and somehow remain in TTE to avoid the +5 forced induction penalty.
Another reason I HATE this points BS. Just make it TT6 already and go off weight : power!

I would also think he would be over:

8.1.2 Minimum “Adjusted Weight/Power Ratios” for each Class
Each competition class has been assigned a minimum “Adjusted Weight/Power Ratio”. Regardless of how many points a car has, or which base class it begins in, it may not exceed the minimum “Adjusted Weight/Power Ratio” for its competition class. Any vehicle found competing with an “Adjusted Weight/Power Ratio” less than the minimum level assigned below will be disqualified, and additional penalties (Section 14) may be assessed.
TTE 16.50:1
2600lbs / 16.50 = 157whp.

flier129 07-10-2017 09:55 AM


Originally Posted by RacerJRP (Post 1426584)
Do we really think a near stock MSM is weighing 2600+ pounds? Seems extra porky.

"E-Street" MSMs roll across the scales at 2500+lbs dry(no driver,not much fuel, no roll-bar). So if it's a relatively stock car with full interior + rollbar, I'd say that MSM was nearly 2700lbs, lol.

MSM can't be competitive in PTE/TTE, imo. Too heavy and not enough points for crucial items.

doward 08-03-2017 01:25 PM

2016 ESC TTE champ is still cleaning house in Great Lakes.

Michael "Nuemansis" Nueman
E base reclass
205 R7 +3
Shocks +3
springs +2
LSD +3
Wing +4
Splitter +3
2800lbs @ <150 whp

https://cimg2.ibsrv.net/gimg/www.mia...6d77624a82.jpg

whoahstu 08-03-2017 01:32 PM

Who says he's less than 150?

mweber 08-03-2017 01:39 PM


Originally Posted by whoahstu (Post 1431504)
Who says he's less than 150?

His reclass is 2800lbs @ 154rwhp.

He swept all three races at Autobahn this weekend and reset the South track record at a 1:37.240.

Arca_ex 08-03-2017 01:45 PM

Are there any well done E* base class or points Miatas there though? It's so hard to tell if things are competitive at regional events because of low turnout or the whole field could be underprepped. I've completely cleaned house locally for years but I know I'd get destroyed in a heartbeat at nationals.

I feel like that setup still wouldn't match a reclass Miata since same tires and same power to weight but Miata has much better weight to contact patch ratio. Would definitely get beat by a proper points Miata though.

whoahstu 08-03-2017 01:50 PM

There are three regularly run NB1 points cars. They're all on stock ecus and running squaretops and Hoosiers. I'm one of them. Neuman has the best car (prep) out of the ones who normally show. He's a damn good driver too. He's much improved his racecraft from last year.

doward 08-03-2017 01:57 PM


Originally Posted by whoahstu (Post 1431504)
Who says he's less than 150?

Math. I assumed a 18.2:1 no-asterisk reclass ratio and took a few whp off for dyno cushion. Maybe he makes 150-151 in reality.


Originally Posted by mweber (Post 1431506)
His reclass is 2800lbs @ 154rwhp.

Thanks Mike!

mweber 08-03-2017 02:00 PM

The previous track record was held by Jason Kohler's Miata which was a well built car with a driver to match. The Great Lakes region has two main Miata camps, points builds and straight E reclass with wings and air dams. Gingerman was the first event for Neuman with the new setup, he previously was not running the wing and splitter at 2680lbs.. August Mid Ohio will have at least 3 points build Miatas along with 4 or 5 E reclass full aero Miatas, should be a good time.

mweber 08-03-2017 02:04 PM


Originally Posted by doward (Post 1431515)
Math. I assumed a 18.2:1 no-asterisk reclass ratio and took a few whp off for dyno cushion. Maybe he makes 150-151 in reality.


Thanks Mike!

The last time he was on the Backstreet dyno, he made 148rwhp.

jpreston 08-03-2017 02:09 PM

With the announcement that PTE is here to stay for at least 1 more year, I've decided to re-build my crashed 99. Bought a clean NB tub this past weekend and will be taking it to Mcmahan for another cage in the next few weeks. As busy as I've been with work lately, I doubt I'll have it ready for any races in 2017. Looking forward to PTE 2018!

Arca_ex 08-03-2017 04:17 PM


Originally Posted by whoahstu (Post 1431514)
There are three regularly run NB1 points cars. They're all on stock ecus and running squaretops and Hoosiers. I'm one of them. Neuman has the best car (prep) out of the ones who normally show. He's a damn good driver too. He's much improved his racecraft from last year.


Yeah kind of what I thought. Any points build without a standalone, not on e85 and without a zero points motor has a long ways to go to be competitive.

I wish that ST5/6 would have come out this year so that NA chassis will be on a level playing field.

FatKao 08-03-2017 09:59 PM

I'm not sure I could match Kohler's time even if I finish my car on a NB2 PTE* build. Best I've done @ VIR is 2:17.2 on a pretty perfect day. He did a 2:14.9 at ECC. I'm only 2390lbs, would need to throw a cam on the motor to get the power to increase the weight, would also need a better LSD as well as 0 point front end aero. There is a bit more chassis setup work to do, and I only run on SM7s while I have the points for R7s. All in all, I don't think that's 2+s of improvements.

Arca_ex 08-04-2017 12:17 AM

You'll always be at a disadvantage when working within a dyno reclass with a Miata. Exact reason I was excited to see ST stuff come out lol.


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