Just Installed my Motordyne 5/16 spacer. Also I installed the (2) iso thermal spacers. Now when I have a nasty vibration under partial throttle from a stop? Anyone have this problem also? Suggestions?

The only thning I can think of is that I dont have the required clearance under the strut bar and am rubbing it? I do have about 3/16" clearance at idle.

 

maybe you should try taking the strut bar off temporarily and see if you still get the vibrations.

 

BINGO!

It says right in the install indtructions that it's been reported that using both gaskets instead of one has caused rubbing on the strut bar on Z's...did you read the install sheets first?