Jerry,
If you use lower springs, then you need a stronger spring rate to avoid
bottoming-out.
I got some springs via triumphtune (thru Moss, I believe) and they are great.
However,
they end up with about stock height with a stronger spring rate. I really like
them with
heavy duty valving in the rear levers and adjustable tube shocks up front.
With 5 inch or so clearance, I personally do not see LOWERING the suspension as
a
major benefit. For autoX you would like FLATTER cornering. Use a big front
sway bar and
then a small rear bar if you need even less understeer. The upgraded springs
that I described
above will work great in this set-up.
Also, take the front toe-in to the minimum of the allowable range (about zero).
Double check the
rear toe-in to be sure it is in spec.
With all these easy mods, you will do fine without lowering, and you will not
bottom-out on a crowned road!
-Tony
Message text written by INTERNET:owner-triumphs-digest@autox.team.net
>From: "Gerald M. Van Vlack" <jerryvv@worldnet.att.net>
Subject: TR4A IRS Springs
Hello list,
Does anybody on the list have the free length and rate for the front and
rear springs on an IRS TR4A? My guess is that they are different from the
250 and the 6 so I would want the specifics on the 4A only. Here's what I
want to do. I would like to lower the ride height by about 1/2" to 1" while
maintaining the same spring rate so as not to bottom out the springs.
Thinking about doing some autocrossing and I like the look of the 6's that
are lowered for autocrossing.
Any opinions from those who have done it?
Jerry Van Vlack
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