Re: Delrin or poly...

[Javad Shadzi <javad@ecst.csuchico.edu>]

> One trick that I recommend: When you install new bushings, drill out the
> subframe to accept slightly oversize bolts and ream the bushings to match.  It
> may be a PITA to get everything lined up but you'd be surprised how much slop
> there is with the OEM parts, especially after the car's done 100k or
so.> 
   
   Have you actually done this?  It is my understanding that the a-arm
does not pivot around the bolt , but around the inner sleeve as the
vulcanized rubber twists inside the outer sleeve.  There is no metal on
metal contact that I know of.  That is why the a-arm does not just flop
down when deattaced from the ball joint, and why the bolts should only be
tightened when the suspension is at rest- to prevent a twisting pre load
on the bushings.  With Delrin bushings, the inner sleeve pivots inside a
loose tolerance hole through the Delrin...
That is my understanding, anyway  :]
Javad Shadzi
86 coupeGT