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Tracking / Autocross / HPDE / Drifting What these cars were built for!


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Old 01-20-2016, 02:59 PM   #3963
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I finally emailed Koni regarding the stepped washer and they literally replied in 8 minutes - dang that's speedy! They said they are compiling a list of owners (based on who contacts them) and will ship out the washers when they are available - estimated to be sometime in February.
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Old 01-20-2016, 04:15 PM   #3964
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How much -ve camber are you guys getting in the front with the crash bolts and stock shocks?
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Old 01-20-2016, 04:29 PM   #3965
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How much -ve camber are you guys getting in the front with the crash bolts and stock shocks?
It's usually about -1 to -1.2 I believe. I got -1.1 on both sides.
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Old 01-20-2016, 04:38 PM   #3966
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It's usually about -1 to -1.2 I believe. I got -1.1 on both sides.
Was this with the TRD springs?
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Old 01-20-2016, 04:40 PM   #3967
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Last year I was on the TRD springs, bars (F and R), and Koni full replacements. -2.2 degrees camber up front and I think -1.6 degrees camber in the rear. 0 toe all the way around. I ran the Koni's 1/2 turn from full stiff up front and 1/2 from full soft in the rear.

...And I got oversteer on corner exit on throttle. It was controllable if I eased into the throttle, but it definitely didn't push imho.

This year, I'll have to run the inserts in the front Konis and I'll probably lose about a degree of negative camber. I obviously haven't had a chance to try it that way yet, but my guess is I will still get some oversteer on corner exit.

From the factory, BRZ's understeer (typical Subaru) whereas the FRS has a bit more rotation. The TRD springs are "apparently" the same spring ratio when compared front to back, so the handling characteristics should be similar with the TRD's vs stock on the FRS.

I've always run 0 toe on my cars, but if I still have excessive oversteer on corner exit, I may try a hair of toe-in in the rear.
Thanks for sharing your experiences. A little bit of oversteer on corner exit is nice, I can get the car pointed in the right direction. I rather have that than the push I was getting on my BRZ. I think the stiffer springs and sways will help neutralize the car a bit. Hopefully it doesn't get too loose during the slaloms. I think my BRZ was well balanced there.

First event in the car is this weekend, but looking like its going to rain
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Old 01-20-2016, 04:48 PM   #3968
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Thanks for sharing your experiences. A little bit of oversteer on corner exit is nice, I can get the car pointed in the right direction. I rather have that than the push I was getting on my BRZ. I think the stiffer springs and sways will help neutralize the car a bit. Hopefully it doesn't get too loose during the slaloms. I think my BRZ was well balanced there.

First event in the car is this weekend, but looking like its going to rain
Oh must be rough...rain! Boo hoo, my car has been in storage since November and won't come out until March/April

Anyway, you might want to try zero toe all the way around with as much negative camber you can get up front on the new setup. Then after you've experimented a bit, I'd fine tune with strut rebound adjustments, then toe.
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Old 01-20-2016, 04:58 PM   #3969
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Was this with the TRD springs?
No sorry, stock
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Old 01-20-2016, 05:20 PM   #3970
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I would imagine the TRD springs will provide us with a little more negative camber since the car is being lowered. That will probably be the biggest advantage of the TRD springs.
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Old 01-20-2016, 05:59 PM   #3971
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C street mods that may turn to STX

I've done very little autox, and zero HPDE with my FR-S. For several years I've been tracking my Porsche 944, and autoxing my completely stock Boxster 986S with PCA. In the last few years, I have only been autoxing. Now I've "retired" my 944 from track duty and returned it back to mostly stock. I've been contemplating getting back into HPDE in the FR-S and competing in SCCA autocross with it. I'll definitely continue to be at most of our local PCA events in the Boxster (I'm active on the PCA autox committee).


I've been thinking about STX for the FR-S only because of the potential need for brake and cooling upgrades for HPDE use. I'll be lucky to make more than a 3 or so HPDE's in a year, so I really don't want to put a bunch of money in the car for a "maybe" use.


If I go the C Street route for SCCA autocross, what mods would you suggest that won't be a waste of money should I end up going the STX route? I don't mind having an extra set of 17x7 wheels, so that wouldn't be wasted money.
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Old 01-20-2016, 06:27 PM   #3972
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I've done very little autox, and zero HPDE with my FR-S. For several years I've been tracking my Porsche 944, and autoxing my completely stock Boxster 986S with PCA. In the last few years, I have only been autoxing. Now I've "retired" my 944 from track duty and returned it back to mostly stock. I've been contemplating getting back into HPDE in the FR-S and competing in SCCA autocross with it. I'll definitely continue to be at most of our local PCA events in the Boxster (I'm active on the PCA autox committee).


I've been thinking about STX for the FR-S only because of the potential need for brake and cooling upgrades for HPDE use. I'll be lucky to make more than a 3 or so HPDE's in a year, so I really don't want to put a bunch of money in the car for a "maybe" use.


If I go the C Street route for SCCA autocross, what mods would you suggest that won't be a waste of money should I end up going the STX route? I don't mind having an extra set of 17x7 wheels, so that wouldn't be wasted money.
Most people run 17x9 in STX and are forced to stay 17x7 in CS. That being said, another set of 17x7 would then be a waste of money if you want to be nationally competitive. The only things I could think of that carry over for class prepared cars might be brake pads, a sway bar and fluid refreshing.
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Old 01-20-2016, 06:28 PM   #3973
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Depends on how far you want to go in STX. All of the stuff you can do in CS would still work for STX, but it may not necessarily be the best option for STX. If you're looking for components that would be 'best' for both, that list is going to be quite small.

I think you can get some MCS shocks. I think on its own its normally a coilover but you can some spring perches that make legal for CS. You would just back to the non CS spring perch for STX.

A lightweight catback or axleback may be usable, but you're going to want headers and a tune for STX. So the catback/axleback would still need to hook up to whatever you do exhaust wise.

You may also be able to keep a sway bar. That is all that comes to mind.
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Old 01-20-2016, 07:01 PM   #3974
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I've been thinking about STX for the FR-S only because of the potential need for brake and cooling upgrades for HPDE use.
Pads and fluid will cover the brakes and imo cooling is not a necessity on stock powertrain, I'd say save a few bucks and do CS.

If you're determined to run an oil cooler I doubt the local guys will throw a fit as it's unlikely to be a performance advantage.
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Old 01-20-2016, 07:02 PM   #3975
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How much -ve camber are you guys getting in the front with the crash bolts and stock shocks?
-0.9 both sides with TRD springs.
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Old 01-21-2016, 12:08 PM   #3976
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I post here because we're OEM


how fast do you guys lose alignment after racing?


my last 3 alignments, about 8 months apart each, show a trend of the rear going considerably out of spec, while the front maintains it's spec much better.


could this be an issue with the OEM alignment bolt in the rear, or the fact our rear crossmember shifts around a lot from having soft bushings?
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