S2000 Under The Hood S2000 Technical and Mechanical discussions.

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Old Jul 31, 2004 | 12:50 PM
  #11  
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90% of all street cars are designed to understeer for safety reasons.
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Old Jul 31, 2004 | 04:42 PM
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Originally Posted by RACER,Jul 30 2004, 06:51 PM
The sharpness of a curve is dictated by not only by the degree's of an angle, but the length of the radius as well. You could go 100 mph around a 90 degree turn with a radius of 500 feet. On the other hand, a 90 degree turn with a radius of 50 feet may be taken at 35-45 mph.

How much tread are on your tires? Have you checked the air pressures? What is your alignment set at?



I'm pretty sure it's safe to assume that by "90
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Old Jul 31, 2004 | 04:48 PM
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[QUOTE=alexf20c,Jul 31 2004, 05:42 PM]


I'm pretty sure it's safe to assume that by "90
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Old Jul 31, 2004 | 04:50 PM
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Originally Posted by alexf20c,Jul 31 2004, 05:42 PM



Not turn 6 at his local track.
Turn 6 at my local track is taken at about 60-70 mph
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Old Jul 31, 2004 | 04:50 PM
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indeed
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Old Aug 4, 2004 | 11:43 AM
  #16  
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Originally Posted by RACER,Jul 31 2004, 04:48 PM
When driving my S2000 on any curve in the road of at least 30-90 degrees at 60mph+ plus.



I doubt he could go 60 mph on a right hand intersection turn
I refer to a situation like a highway onramp, where it may take upwards of a 10th of a mile to actually make the complete 90 degree turn.

The car had not been doing the pushing until recently, so we can rule out the fact that the car is SUPPOSED to push in this scenario.

Nor do I need driver training school, like someone else suggested. I've been driving 5/6 speed sports cars since I had my '86 Rx7 18 years ago. None of them have done this.

Someone else suggested to slow down. Now, I could take the onramp in 5th gear, which doesn't generate enough torque when I hit the throttle at 60 mph to create the phenominon. However, I don't think the car was designed so that the driver is FORCED to have to lolligag it in 5th gear on highway onramps.
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Old Aug 4, 2004 | 12:59 PM
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Well, if it only recently started doing this, there are only a couple things that could have happened. It's not like your swaybar of spring rates suddenly changed on their own.

1) You hit a pothole or a curb or whatever, and damaged the suspension so that the alignment is no longer in spec, or simply knocked it out of spec without damage.
2) Your front tires are worn out and need to be replaced, or are improperly inflated.

So I'd suggest checking your tires for pressure and condition, and if that all checks out get an alignment. If you're still having issues then, I'm not sure what it could be.

By the way - for how many miles have you owned the car?
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Old Aug 4, 2004 | 06:29 PM
  #18  
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Yes, get a 4-wheel alignment done.
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Old Aug 5, 2004 | 08:08 AM
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Also get an X-Brace, or an X-Brace and a Strut Tower Brace combo.

I found the same thing when I switched to this car. After adding these braces, the feeling is diminished (still there, but MUCH less noticeable).

I confirmed how much they actually help when I drove a different S from Cali to Oklahoma City earlier this year. It did not have the bracing and was ALOT more loose in the corners.

Plus, these are relatively inexpensive items and can be installed at home.

Be careful and best of luck,
Hockey
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Old Aug 5, 2004 | 08:24 AM
  #20  
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Thanks for all the troubleshooting.

To answer a few of your questions:

1) The pushing occured before and continues to occur after the 4 wheel alignment I got LAST WEEK. The previous alignment was back when I replaced the rear tires 6 mo. ago.

My alignment is set at:
Front Camber -5 degrees Caster 6.2 degrees Toe -.05 degrees
Rear Camber -1.4 degrees, Toe +.26 degrees
Thrust Angle is 0

2) The front and rear tires - Fronts were replaced 2k miles ago, rears replaced 5k miles ago. All are the Bridgestone OEMs and are wearing perfectly normal.

3) I am the original owner of the car and have 23k on it.

Perhaps the alignment is the culpret or maybe my rear differencial is causing the problem????? Any thoughts on this??
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