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> Made lots of changes, now it pushes, Yes, I know I shouldn't have
nhallman
post Jun 3 2007, 09:51 PM
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From: Columbia, SC
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OK, so I finally decided to do some suspension upgrades on my autocross car ('75 1.8), and I kind of did everything at once (yeah, yeah, I know):

Koni yellow shocks/struts
930 tie rods
22mm Weltmeister front sway bar
180# Weltmeister springs
disconnected (stock) rear sway bar

I was sort of following an old (mid-90's) Weltmeister guide for autocross setup that I found on the Pelican board, except they recommended 21mm torsion bars up front. I sort of ran out of cash, so I left the stock torsion bars on the car.

So, I figured that by not stiffening the front as much as recommended, but making all the other changes, the car would tend toward loose (especially since that's how I tend to drive it). Wrong. It pushes... badly.

When I made my first few runs, I had the Koni's on full stiff. I took a full turn out of the front and that helped, but the car still pushed. I played with pressures, taking 3 lbs. out of the rear (Kumho V710's - an R compound tire), leaving the front at 35 lbs. and the rear at 32 lbs. That helped, too, but it did still push and was a concern because the car had been so neutral prior to the changes that I rarely had to adjust tire pressure.

So... now what? I have all this adjustment available to me, and I don't know what to try.

My fear is that in my quest to get the car back to neutral, I'll take away some of the major gains I've made in grip (did I mention it did stick like 500% better?). I don't want to do that.

My thoughts (ranging from simplest to craziest):

- adjust my driving style and deal with it
- soften the front struts even more
- loosen the front sway bar (currently set to full stiff)
- reconnect the rear sway bar
- set the rear toe to 0 (currently 1/16 toe in, front is 3/32 toe out)
- cut a coil from the rear springs (only a consideration b/c I can only get ~1.2 deg negative camber in the rear - all shims removed)

Any ideas? I'm a fairly experienced autocrosser with a lot of seat time in this car, but I'm a total novice at suspension setup. I just tended to jump in the car and drive it up till now.

TIA...
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nhallman   Made lots of changes, now it pushes   Jun 3 2007, 09:51 PM
jhadler   - adjust my driving style and deal with it I...   Jun 3 2007, 11:27 PM
nhallman   Why, it won't fix the problem. A lot of peopl...   Jun 4 2007, 10:01 AM
Dan (Almaden Valley)   Why, it won't fix the problem. A lot of peop...   Jun 4 2007, 10:13 AM
Joe Ricard   To fix your push loosen the front bar. Also what ...   Jun 4 2007, 10:49 AM
ConeDodger   Take your front bar back to full loose and then mo...   Jun 4 2007, 01:09 PM
grantsfo   My 1.8 had exact setup for a short period. Didnt ...   Jun 4 2007, 02:57 PM
nhallman   Tires are 205/50/15 Kumho V710's on stock 5.5...   Jun 4 2007, 06:57 PM
Dan (Almaden Valley)   Tires are 205/50/15 Kumho V710's on stock 5.5...   Jun 4 2007, 06:59 PM
nhallman   I'm not exactly sure what the ride height is, ...   Jun 5 2007, 10:37 AM
jhadler   Camber. Gotta get it. If you don't have it, fi...   Jun 5 2007, 11:26 AM
nhallman   I have the front caster set to the max. Slotting ...   Jun 5 2007, 11:37 AM
jhadler   Then it may be time to see if your chassis is stra...   Jun 5 2007, 11:39 AM
nhallman   Then it may be time to see if your chassis is str...   Jun 5 2007, 12:03 PM
jhadler   You've already got Koni's right? Get the a...   Jun 5 2007, 12:08 PM
nhallman   You've already got Koni's right? Get the ...   Jun 5 2007, 05:21 PM
jhadler   Not sure why you can't find 'em anymore. B...   Jun 5 2007, 05:35 PM
914forme   That is very minal camber there. You will notice ...   Jun 5 2007, 06:56 PM
nhallman   Awesome... thanks for checking on that, Josh. So ...   Jun 5 2007, 08:03 PM
nine14cats   Awesome... thanks for checking on that, Josh. So...   Jun 6 2007, 10:40 AM
jhadler   Awesome... thanks for checking on that, Josh. So...   Jun 6 2007, 11:00 AM


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