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<2002tii> Re: Autocross set up
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Subject: <2002tii> Re: Autocross set up
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From: "Matt R. Brumwell" <mbrumwell@domain.elided>
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Date: Tue, 17 Sep 1996 11:17:29 -0500
Way back in digest #204 Vince Brown asked about autocross set up for his tii.
I have a '75 2002 which I've been preparing for autocross the last few years and got to
use a few times this year before spinning a rod bearing.
I'm using Suspension Techniques springs and sway bars (22mm non adj/19mm adj.) The
front springs have one coil cut from them to lower the ride height and I'm thinking of
going a little further. My front end use to sit up because of the adjustable camber
plates I have. Unfortunately my car led a rather bad life before making its way to me
and the camber plates really only managed to get the front end back to the stock setting
of -.2 deg camber. However, since I chopped a coil out of the springs the camber is
more negative, but I haven't had it on the rack yet. I also did one other thing to help
correct the accident damage (purist cover your eyes right now and page down).
I put a come along across the fenders near the shock towers and cranked until I thought
the fenders would tear. I hold it in postion with an adjustable strut brace. Every so
often I take a few more cranks with the come along and retighten the brace. Kinda like
an orthodondist with braces.
My sway bar bushings are urethane front and rear. The rest of the bushings in the front
I made from Delrin on a lathe. I think Korman sells these if you don't have access to a
lathe and have deep pockets. In the rear the subframe mounts have the rubber removed
and steel welded in place. The rest of the rear suspension is urethane, including the
differential mounts. The rear bar is set on max oversteer right now.
Other important facts. The rear end is a 3.90 LSD. This helps a lot, but highway
cruising rpm's have climbed a little. Right now I'm using 13 x 5.5 wheels from a 320i.
They do not rub on my car, but often do on others. They make the stance a little wider
and I can squeeze 205 series tires on them. Ideally I could find some 13 x 7 wheels
with the correct offset and go with 225 tires. I also have a smaller steering wheel.
The A/C was removed and the battery was put in the trunk to distribute the weight
better.
2002 owners who have driven it really like the handling. Turn in is immediate and body
roll is a lot less than normal. The car still understeers a little, but I'm hoping my
soon to arrive engine will allow me to use the throttle to pversteer. I'm really happy
with the final product, but it is not a car for long trips. It tends to ride like a box
car over rough surfaces like RR tracks. I'm to the point where the car will only be
used for autocrosses and maybe comutes to work on certain days.