I fixed my front diff mount today , I took 2 hours to replace a new one. I hope I won't break it again.

pic of the mount

 

Do you think it died of old age or from abuse? how did you know it was bad??

 

you hear a THUMP!! every time you get on or off the gas. YOu can't not notice it.

 

does it THUMP when engaging the clutch too?

 

yeah


BTW anyone have a writeup? I need to do this to my car soon.

 

LOL its pretty straight foward just a PITA...first you unbolt the subframe, get a big *** prybar and pry the subframe off the mounting studs remove the 2 nuts that are connected from the front diff mount to the subframe (should be easy to get the broken one out) then remove the 2 or 3 nuts that bolt the mount to the differtial itself, bolt the new mount up to the differentail, then you have to get the braket on the subframe, to slid around the bolts on the differential mount, put the nuts on the mount holding it to the subframe (very tight), then use the pry bar to pry the subframe back into place, as long as you get it over both studs you can stop prying, get 2 jack stands and put one under each side on the subframe near the studs, let the jack down and the subframe should seat nicely, put the nuts back on and you through!

 

Abuse is the #1 cause. High-rev launches, etc.

IMHO, if you install a new diff mount without installing a pinion snubber you'd better plan on replacing that diff mount again in the future.


My recent thread chronicling my front diff replacement:

https://www.rx7club.com/forum/showth...ighlight=mount


If you don't have a breaker bar, don't expect the bolts holding the mount to the diff to come out...