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PostPosted: Sat Oct 01, 2016 8:12 pm 
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I'm currently figuring out my 2017 plans, ran ptd/ttd past 2 years and the class has shrunk down to nothing in both regions I race (Texas and Rocky Mountain). Considering an e36 or e46 M3 next year, but open to thoughts on ST4 ideal builds. I haven't been through the 14 page thread yet, and it seems as though things are still being ironed out... Just curious what you guys/gals are thinking would make a great ST4 car.


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PostPosted: Mon Oct 03, 2016 6:43 am 
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C5 Corvette

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Ken Brewer - formerly 1994 Toyota MR2 #6 TTF, PTF, E3
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PostPosted: Mon Oct 03, 2016 8:58 am 
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kbrew8991 wrote:
C5 Corvette


Too many letters to spell Miata Is Always The Answer.


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PostPosted: Tue Oct 04, 2016 5:12 am 
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For ST/6/7 yeah Miata. Not 4. Ha.

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PostPosted: Thu Oct 13, 2016 7:35 am 
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Depends on the track! :lol:

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PostPosted: Thu Oct 13, 2016 4:49 pm 
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NB Miata with a K series swap and probably 275mm 15" Hoosiers.


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PostPosted: Fri Oct 14, 2016 5:02 am 
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wouldn't you have to take a pretty decent assessment for the alternate "k-member" to fit the K-series? Or can it be done on the stock stuff with more work?

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PostPosted: Mon Oct 17, 2016 7:34 am 
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A K-swapped Miata is definitely viable. With a well developed stock K24 (tune, etc) and a REALLY light Miata, you can fit into ST3 pretty well. Downtune that to ST4 and you have a potential class dominator.

I would not say it's the "car to build" for ST4. S2000 would be my first choice.

A K swap Miata does require the non-production adjustment due to the tubular subframe. And yes, you probably need 225 R7's or maybe wider to make it viable.

Also, putting together a race-reliable K-miata has been a huge challenge for me. Great for DE or TT sessions, but race abuse is a whole new level of heat, vibration, and stress! Not to mention you have a few one-off parts that can't be easily replaced when you break them at the track. (A cracked header got me this last weekend at TWS...)

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PostPosted: Tue Oct 18, 2016 12:55 pm 
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Having a K24 Swap S2000 that I think will be a good TT4 car. I would say something with Very good factory aero and the engine mounted in the rear.... err rear ish. AKA Cayman S or some sort of slower 911. A cayman S will out run my S2000 in a straight line despite the S2000 having a similar or better avg hp to weight numbers. P cars = Slippery, good tq and often great gearing. Only problem with any P car that meets this HP to weight ratio is they all have that stupid Intermediate shaft bearing issue. So your gonna put motors in them left and right.

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PostPosted: Wed Oct 19, 2016 7:03 am 
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Mrsideways wrote:
Only problem with any P car that meets this HP to weight ratio is they all have that stupid Intermediate shaft bearing issue. So your gonna put motors in them left and right.

I thought that was a relatively easy fix with a retrofit part, do it once correctly and you're fine..?

Good point on OEM aero though, and mid engine may put down power a bit better too.

I still vote base C5 though....

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