[Fot] Toe-in question on TR4

Tony Drews tony at tonydrews.com
Sat Jun 30 09:44:55 MDT 2012


Is this a solid rear axle or an IRS car?  I assume since you didn't 
say TR4a that it's solid rear axle.  If it's IRS, check the rear 
toe.  A little rear toe out would cause twitchiness.

You can try dialing in a little more front toe (up to 3/16") and see 
if that makes a difference.  It should not feel twitchy going 
straight.  It sure sounds like you've got SOMETHING wanting to pull 
the car in two directions, the challenge is figuring out WHAT is doing that.

Tony

At 09:07 AM 6/30/2012, brad.kahler at 141.com wrote:
>Amici,
>
>My question is on my street TR4.  I've rebuilt the steering rack,
>replaced the tie rod ends, new Kumho 195/65R15 tires on new mini-lite
>replicas.  Stock front suspension components with the 3 degree castor
>trunnions.  The suspension is tight with no slop in the steering that I can
>detect.  Toe-in has been set to 1/16" (I read somewhere that for radials this
>would be the appropriate setting).  Smaller diameter later TR6 steering wheel.
>The problem is when coming into a turn and when you first start turning the
>steering wheel the car acts like it wants to start turning and then it feels
>like you're plowing into the corner and it seems to not want to make the turn.
>It takes two hands on the steering wheel to make the turn.  Also in straight
>ahead driving it seems real twitchy.  In other words a slight movement of the
>wheel either direction and it seems to over react.
>
>So, is this a toe-in
>problem?  If so do I need more toe-in or less toe-in?
>
>Years ago I had a 73
>TR6 and I don't remember this kind of response from the steering.
>
>Other than
>this issue the car rides smooth as glass.
>
>Any suggestions?
>
>Thanks,
>
>Brad
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