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Rear end wandering - help wanted

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Old 09-08-2009, 12:40 AM
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Robert-VanBC
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Default Rear end wandering - help wanted

Hi Guys;

I have a 1995 C2 with a few minor mods. I just had the engine pulled to have a new clutch/ RMS/ gaskets /valve guides (thanks to S. Weiner for the parts) installed and since then the rear end tends to wander all over the highway. When it rains it is just down right dangerous. I have not had an alignment done since the engine went back in. Here are current specs.......

MO 30 suspension
Rear: 25" to underside of wheel well
Front: 25 3/4" to underside of wheel well
Sumitomo HTR Z III tires - front 225/40/ZR 18, rear 265/35/ZR 18
MY02 18" wheels
40lb psi rear
35lb psi front

Any help/suggestions would be very much appreciated.

Thanks all!
Old 09-08-2009, 01:01 AM
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black ice
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If you're feeling it in the dry, I'd be questioning alignment. If you're really feeling it in the wet, I'd question what kind of tire tread you have left, which could also be exacerbated by alignment. With an aggressive alignment I've experienced some pretty scary stuff when I reach the wear bars in back on the inside.

dave
Old 09-08-2009, 01:49 AM
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Mike J
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If you dropped the engine, the alignment is out since you have to remove the bottom suspension member, and thus the lower control arms. Even marking with felt pens to restore the alignment just gets the alignment close enough to drive to a shop...get the car aligned and it should be all good to go again.

Cheers,

Mike
Old 09-08-2009, 07:10 PM
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Stealth 993
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You just need a alignment.
Old 09-08-2009, 08:10 PM
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Steve Weiner-Rennsport Systems
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Hey Bob,

A good (setting the kinematic toe correctly) alignment will fix you right up.
Old 09-08-2009, 10:26 PM
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jdistefa
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Bob,

As per Steve's comment, make sure the shop you go to knows these cars and has the proper tool (either Porsche or Autometrics) to set kinematic toe .
Old 09-08-2009, 10:40 PM
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John H
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Originally Posted by black ice
If you're feeling it in the dry, I'd be questioning alignment. If you're really feeling it in the wet, I'd question what kind of tire tread you have left, which could also be exacerbated by alignment. With an aggressive alignment I've experienced some pretty scary stuff when I reach the wear bars in back on the inside.

dave

+1
Old 09-09-2009, 01:20 AM
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Robert-VanBC
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Thanks to everyone for your quick responses.

The first thing I did check was the tire tread as this happened once before with the fronts and I was worn on the inside without realizing it. The rear tread looks fine and a long way from the wear bars.

Alignment was what I had in mind so thanks everyone for confirming this. I will report back when its done.

Robert
Old 09-19-2009, 01:41 AM
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Robert-VanBC
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Default Rear end wandering fixed !!

Just reporting back to let you know I took the car back to my mechanic and he readjusted, realigned etc etc and voila ........... can take those tight turns in the rain again without hesitation !!
Old 09-19-2009, 01:59 AM
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baron95993
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Glad you posted this!!! My 95 is having the same issues thanks

Baron
Old 09-19-2009, 11:34 AM
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RustyRotors
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Default Alignment

Originally Posted by Robert-VanBC
Just reporting back to let you know I took the car back to my mechanic and he readjusted, realigned etc etc and voila ........... can take those tight turns in the rain again without hesitation !!
Hello Robert

Which shop did the alignment for you and what was the cost? Did they have the tool to do the kinematic toe?

Thanks
Ron
Vancouver Island



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