Another "Is it true?" question (Page 1/1)
imacflier AUG 11, 08:35 PM
Good evening, Everyone,

Well for today's "Is it true that....?", we have an '88 GT which is about to have Rodney's 1" lowering ball joint and one coil cut from the front springs. I read, yesterday.....somewhere on the Forum...that that is a combination which does not require trimming the bump stop! I cannot find the reference I read, so.....what is the story: trim the bump stop or not?


TIA,

Larry
CowsPatoot AUG 12, 12:28 AM
The point of using the lowering ball joint is to retain the original suspension geometry for the lower control arm. The bump stop would be part of that lower control arm geometry. You do not need to trim the bump stops unless you are adding lowering springs.

Edit to add....helps if I read the whole thing. With a coil cut, you may need to trim them. Better get a second opinion.

[This message has been edited by CowsPatoot (edited 08-12-2020).]

qwikgta AUG 12, 04:13 PM
you will know after you put it on the ground. if you do, unbolt it, trim it, install it.
Raydar AUG 12, 04:44 PM
My car is lowered by one coil in the front. I trimmed my bumpstops.

I should add... if you are using Corvette rotors, you will need to trim the "noses" of your lower control arms. Otherwise, they will tend to gouge the backs of the rotors.
Just lowering can cause it. Using the lowering balljoints most definitely will.
Fieroguru posted a detailed dissertation of this issue.
imacflier AUG 12, 08:28 PM
qwikgta

I was hoping to avoid trial and error....but that seems the only path to expect

Raydar

Not going with the vette rotors: I am appalled by the thought of using a standard wear part that might have to be modified in Never-Get-Home, NM by some crazed native! I will be using the LeBaron rotors and the Zettner for '88's bracketry. With luck I will not have to trim or otherwise abuse my control arms!


Thanks to all who contributed, it is, as always, muchly appreciated.

Larry