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The STX thread!

RX-8 Racing Want to discuss autocrossing, road-racing and drag racing the RX-8? Bring it here. This is NOT a kills/street racing forum.

The STX thread!

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Old 12-29-2016, 03:07 PM
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Anyone doing anything exciting over the winter?


I'm just un-DSP'ing my car, which amounts to removing the 4.777 diff. I'll be running on used tires all next year and just generally not being all that serious. Could possibly be being ousted from the RX-8 and into a C5, we shall see :-)
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Old 02-26-2017, 09:56 AM
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Finishing wrapping up a lot of loose ends on my car for the upcoming 3/26 test & tune day.

So far I've go the following:
FEAL 441 Coilovers (10k F / 7k R)
Progress tech sway bars F & R - front set to medium, rear set to soft for now
SOHN OMP adaptor running Redline 2 stroke oil
AC Delete
Mazmart T-stat
BHR Coils
RB Header/ BHR midpipe / HKS Hi Power single exhaust
Hawk + pads front & rear
SS brake lines
gutted interior
Enkei RS+M 17" wheels with Toyo R1R's 245/40/17
Bennetbuilt SS Oil cooler lines (PIA to install!)
Cobb AP in route
Alignment in the next couple weeks.

Do you guys leave your front fenders liners in place or remove them? I saw where some here had modified the liners, but wondering if I need these in place, other then protecting the back of the oil coolers.
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Old 02-27-2017, 03:10 PM
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Originally Posted by Minor threat View Post
Finishing wrapping up a lot of loose ends on my car for the upcoming 3/26 test & tune day.

So far I've go the following:
FEAL 441 Coilovers (10k F / 7k R)
Progress tech sway bars F & R - front set to medium, rear set to soft for now
SOHN OMP adaptor running Redline 2 stroke oil
AC Delete
Mazmart T-stat
BHR Coils
RB Header/ BHR midpipe / HKS Hi Power single exhaust
Hawk + pads front & rear
SS brake lines
gutted interior
Enkei RS+M 17" wheels with Toyo R1R's 245/40/17
Bennetbuilt SS Oil cooler lines (PIA to install!)
Cobb AP in route
Alignment in the next couple weeks.

Do you guys leave your front fenders liners in place or remove them? I saw where some here had modified the liners, but wondering if I need these in place, other then protecting the back of the oil coolers.
Just FYI, many of the mods you did are not STX legal and in fact send you straight to prepared class in SCCA (gutted interior for one). Which class were you trying to prepare for, or are you just planning to autox for fun and not worry about classing/competitiveness?
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Old 02-27-2017, 03:43 PM
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Not really building this for any particular Auto-x class, just more for fun. It's primary intended use is HPDE and eventually time trials. Half cage, harness & fire suppression system are in the planning stages right now, slated to be complete by June.

Auto-x is closer in distance to me but I've never fallen in love with it. So it's really just for fun & to shake down the car before throwing it out on a track at speed. I much prefer a road course circuit being an ex motorcycle road racer.
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Old 02-27-2017, 03:51 PM
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Originally Posted by Minor threat View Post
Not really building this for any particular Auto-x class, just more for fun. It's primary intended use is HPDE and eventually time trials. Half cage, harness & fire suppression system are in the planning stages right now, slated to be complete by June.

Auto-x is closer in distance to me but I've never fallen in love with it. So it's really just for fun & to shake down the car before throwing it out on a track at speed. I much prefer a road course circuit being an ex motorcycle road racer.
You might be better off asking your questions on one of the track threads, since you're out of the realm of STX rules. STX guys have to keep fender liners in place to be legal. I'm running 17x10's with 275's on my DSP car and my fender liners still fit fine. I kept them unmodified to protect the oil coolers from debris.
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Old 06-17-2017, 05:06 PM
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Almost 4 months, and no chatter in STX? This thread stalker needs some news on the 2017 season so far!
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Old 11-24-2017, 10:31 PM
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Too bad the thread is pretty much dead.

I just picked up an stx built rx8 from down south. Needs some love, but it's already a competitive car with some decent pedigree. It's all minor stuff now!
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Old 11-25-2017, 07:20 AM
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Originally Posted by Abendschein View Post
Too bad the thread is pretty much dead.

I just picked up an stx built rx8 from down south. Needs some love, but it's already a competitive car with some decent pedigree. It's all minor stuff now!
DSP isn't dead.... you can fit 17x10 949's with 275/35/17 Hoosier A7's under your stx fenders
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Old 11-25-2017, 04:14 PM
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"STX is dead, DSP isn't."

Very valid alternative, I just can't tow yet Hoosiers aren't in my budget yet. I'll let the local dsp rx8 here in Rochester keep me entertained as he chases Tamra around. Lol
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Old 11-25-2017, 07:21 PM
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Originally Posted by Abendschein View Post
"STX is dead, DSP isn't."

Very valid alternative, I just can't tow yet Hoosiers aren't in my budget yet. I'll let the local dsp rx8 here in Rochester keep me entertained as he chases Tamra around. Lol
They fit in the back seat! You can drive to events and swap on site
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Old 11-25-2017, 11:36 PM
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Originally Posted by Tamra View Post
They fit in the back seat! You can drive to events and swap on site
We've done that before! Then we started using my FoST as transport too.

There's so much room in there! But HoHo's cost more than I can afford to budget (along with all other things). Especially since my RX8 just unloaded the whole gas tank onto the ground when I tried to start it up tonight. I just recently had Mazda perform the fuel pump recall, so hopefully it's a simple fix or else I'll be doing a whole lot more than planned this winter. lol
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Old 11-26-2017, 07:47 AM
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Originally Posted by Abendschein View Post
We've done that before! Then we started using my FoST as transport too.

There's so much room in there! But HoHo's cost more than I can afford to budget (along with all other things). Especially since my RX8 just unloaded the whole gas tank onto the ground when I tried to start it up tonight. I just recently had Mazda perform the fuel pump recall, so hopefully it's a simple fix or else I'll be doing a whole lot more than planned this winter. lol
Eek, good luck.

Well, the good thing is that going from STX to DSP won't be too difficult once you do have the budget. Basically just new wheels and tires and catless and you'll be at a good starting point. Then slowly add in a lightweight clutch and aero. I'm not familiar with your coilovers, but there isn't a big difference between ST and SP other than a slight spring rate change, assuming you are happy with your coilovers. I run Penskes.

Hope to see you join DSP in the next few years
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Old 11-26-2017, 12:04 PM
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Originally Posted by Tamra View Post
but there isn't a big difference between ST and SP other than a slight spring rate change

lol ...
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Old 11-26-2017, 12:14 PM
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Originally Posted by Tamra View Post
Eek, good luck.

Well, the good thing is that going from STX to DSP won't be too difficult once you do have the budget. Basically just new wheels and tires and catless and you'll be at a good starting point. Then slowly add in a lightweight clutch and aero. I'm not familiar with your coilovers, but there isn't a big difference between ST and SP other than a slight spring rate change, assuming you are happy with your coilovers. I run Penskes.

Hope to see you join DSP in the next few years
Good news - the dealership who did the recall work put the clip on wrong for the hose to the fuel pump.

I have kwv3. Super soft in comparison. John is running way more spring than I am and he has a baller shock setup. Really, tires, wheels, and catless is all you need to start.

We'll see where this car ends up. I might go SM in the future - depends on when I need to do the rebuild. Lol
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Old 11-26-2017, 01:26 PM
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You’ll spend multiple X more in SM than SP, just sayin’ ...
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Old 11-26-2017, 01:44 PM
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Originally Posted by TeamRX8 View Post
You’ll spend multiple X more in SM than SP, just sayin’ ...
Yessir. If the rebuild comes late enough I'll have a bigger budget at the time. If it comes in the next few years, probably going for dsp.
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Old 11-26-2017, 02:14 PM
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Originally Posted by TeamRX8 View Post
lol ...
With the current crop of street tires the change isn’t as big as you would expect. 100-200lb increase would be about right, and within the realm of the valving on good shocks
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Old 11-27-2017, 03:51 PM
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Well I must be out in left field then ...
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Old 12-12-2017, 10:16 AM
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I've found some of my old STX parts when cleaning out my basement from 2010, sadly it looks like the RX8 is now as 'also run' in STX these days. The main thing I have left is a new in box (never installed) OS Giken diff if anybody is interested for their DSP build.

Last edited by BrianGT2; 12-12-2017 at 10:20 AM.
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Old 12-12-2017, 10:35 AM
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Originally Posted by BrianGT2 View Post
I've found some of my old STX parts when cleaning out my basement from 2010, sadly it looks like the RX8 is now as 'also run' in STX these days. The main thing I have left is a new in box (never installed) OS Giken diff if anybody is interested for their DSP build.
What's it got over the stock Torsen exactly? An FD Torsen is also a cheap alternative.

All I know about OSG is that they're expensive compared to others. Lol
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Old 12-12-2017, 12:46 PM
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I believe the main pros of the OSG is the additional plates, lock up and the adjustability of the amount of lock (as you can change the plates in your unit to suit your setup). We had one on our old STR AP1 S2k and it make the car much smoother putting down power at corner exit and help the balance of the car as the AP1 was very much tail happy.
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Old 12-16-2017, 10:26 AM
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If anyone is looking to sell their STX car, I'm looking to buy one.

edit: nevermind!

Last edited by schickane; 02-06-2018 at 05:44 PM.
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Old 05-16-2018, 09:49 AM
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So, who else is excited about the proposed rules change disallowing replacement of seats integral airbags?

https://www.scca.com/downloads/40427...april/download
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Old 05-16-2018, 04:57 PM
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Originally Posted by NotAPreppie View Post
So, who else is excited about the proposed rules change disallowing replacement of seats integral airbags?

https://www.scca.com/downloads/40427...april/download
I think it's dumb.

I understand why. But I still think it's dumb.

Also, I cannot fit in my 8 without modifying/changing the seat.
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Old 05-16-2018, 11:06 PM
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Originally Posted by Abendschein View Post

Also, I cannot fit in my 8 without modifying/changing the seat.
I concur.

I'm only 5'8" and I still have to crouch to fit with a helmet on, add slippery leather seats and at the end of the day I have a sore back just from sitting in my car for 5 runs. This was something I was actively trying to save money to replace by the end of the season.
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