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Track alignments

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Old Oct 18, 2012 | 06:59 AM
  #21  
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Originally Posted by Biohazard
looks like my thread has gotten out of control

so does everyone with a square set up use either equal neg camber front and rear or a bit more in the back than the front? Reason I am asking is a friend of mine who was an avid racer could have gone pro from England suggests having more up front.
More negative camber in the rear is a safer setup because it keeps the rear of the car stable but the car seems to be the quickest with more negative camber in front than in the rear. That's not a good setup for anyone other than a very experienced track/autox driver though. I run -3.5 front and -3.0 in the rear and this seems to be a pretty standard setting for S2000 race cars and top line TTers..
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Old Oct 18, 2012 | 07:12 AM
  #22  
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Originally Posted by MugenR
The UK spec toe setting of 20 minutes each side seem a bit excessive. Are most of you guys close to this setting? I'm only running 20 minutes total toe-in in the rear. That is about 4mm total toe-in for a 255/40R17 wheel.
Most people run much less than that (that is .29"). I think Rob runs more then most people at .2" - .25". Most people around here run more like 1/8" total. I am running 5/32" but I am going to move to 1/8" at my next alignment.



Originally Posted by Biohazard
looks like my thread has gotten out of control

so does everyone with a square set up use either equal neg camber front and rear or a bit more in the back than the front? Reason I am asking is a friend of mine who was an avid racer could have gone pro from England suggests having more up front.
The best way to do it is check temps and tune it that way. But I think -3 all around is a good starting point.
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Old Oct 18, 2012 | 08:03 AM
  #23  
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Originally Posted by ndogg
Originally Posted by MugenR' timestamp='1350556519' post='22091509
The UK spec toe setting of 20 minutes each side seem a bit excessive. Are most of you guys close to this setting? I'm only running 20 minutes total toe-in in the rear. That is about 4mm total toe-in for a 255/40R17 wheel.
Most people run much less than that (that is .29"). I think Rob runs more then most people at .2" - .25". Most people around here run more like 1/8" total. I am running 5/32" but I am going to move to 1/8" at my next alignment.



Originally Posted by Biohazard
looks like my thread has gotten out of control

so does everyone with a square set up use either equal neg camber front and rear or a bit more in the back than the front? Reason I am asking is a friend of mine who was an avid racer could have gone pro from England suggests having more up front.
The best way to do it is check temps and tune it that way. But I think -3 all around is a good starting point.

Thanks for the feed back robrob and ndogg, you confirmed what I was thinking. I will leave the set up for now at -2.5 front and -2 in the rear and check my tire temps. I haven't gone to -3 just because I am still driving the car to and from the track. Looking at a trialer and truck now. I have decent track experience now but alot of it was with front wheel drive so I am first getting used to the vehicle dynamics of rear wheel drive.
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Old Oct 18, 2012 | 08:09 AM
  #24  
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What would you guys say I should put the toe at for a street car? Im going for a alignment today and im unsure. I autocross the car and I plan to track it a few times so I want a mixture of tire life and handling.
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Old Oct 18, 2012 | 08:56 AM
  #25  
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Originally Posted by Danwolski
What would you guys say I should put the toe at for a street car? Im going for a alignment today and im unsure. I autocross the car and I plan to track it a few times so I want a mixture of tire life and handling.
Any toe setting that you like on the track will be fine for the street. So no change from what we have already suggested.
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Old Oct 18, 2012 | 09:02 AM
  #26  
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Originally Posted by Biohazard
looks like my thread has gotten out of control

so does everyone with a square set up use either equal neg camber front and rear or a bit more in the back than the front? Reason I am asking is a friend of mine who was an avid racer could have gone pro from England suggests having more up front.
Use the same setup as Psychoazn. I can testify his setup works well for CRs on nonstaggered 8.5" wheels. You can get away with a little less camber with 9" wheels. The rearend might be "quirky", but that's just how you drive the CR faster. I've ran near zero toe before which was a little dangerous, but a little angle at 115mph never hurt anybody unless you dig two wheels in the dirt sideways...
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Old Oct 18, 2012 | 10:01 AM
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I think only running -2 will be a lot worse for your tires than driving to the track with -3...
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Old Oct 18, 2012 | 01:44 PM
  #28  
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takchi, my 2001 AP1 has the original suspension bushings so it likes more rear toe than your much newer CR. When I say my rear end was "quirky" with a toe setting of around 0.1" total I didn't mean it was loose (which I like), it was literally quirky and unpredictable.
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Old Oct 18, 2012 | 01:47 PM
  #29  
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Originally Posted by robrob
takchi, my 2001 AP1 has the original suspension bushings so it likes more rear toe than your much newer CR. When I say my rear end was "quirky" with a toe setting of around 0.1" total I didn't mean it was loose (which I like), it was literally quirky and unpredictable.
That's not good.
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Old Oct 18, 2012 | 02:36 PM
  #30  
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FWIW, I added a stiff front bar and a rear wing to my car, and found that I blasted the outsides of the front wheels at 3° camber, my car was really understeering, so I added a stiffer rear bar, and went to a smaller rear wing, and now it seems ok, hard to tell until I start taking tire temps on a new set of tires.
My point is, the right camber is really dependent on the sum of all the modification made to the car and the way that it's driven. It's hard to expect good results simply adopting someone else's settings.

Dylan
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