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reccakun08 · 07-15-2008, 11:27 PM

i have a 1990 fastback with z32 n/a vlsd with j30 axles. Got aluminum bushings for the front.

First i unbolted the front 2 bolts. BTW i have jack underneath the diff just incase. Next i used plyer to grab the bolt collar and pulled down. Came out easy enough with the rubber wrapped around it. Cleaned off some of the rubber that was still stuck around the front diff mount. Now for the problem, I test fitted the bushings to see if they will fit and they wont. There is a lip on the diff mounting point where it is blocking the new bushing. I tried to hammer with a punch to see if it will budge and it didnt. So now im assuming its apart of the diff mount but i am not entirely sure. The bottom has a lip and when i felt above it, it was smooth. Not sure if i should machine the bushings in a lathe to make it fit in between.

Also i do not have enough clearance to slip the top bushing above so i am hoping i do not have to drop the whole diff. Anyone have any ideas of lowering the diff about 2inch enough to slip the top bushing on? I am thinking i might have to drop the whole diff which i think requires removing 4 bolts to the drive shaft the 2 front bolts which are already off, the 4 rear bolts, and the output shaft bolts?

Thanks. Car is current still on jackstands in a friends driveway and need to move it tommorrow.

07-15-2008, 11:27 PM	#1
reccakun08 Zilvia FREAK! Join Date: Jun 2003 Location: Rockville, Maryland Age: 40 Posts: 1,090 Trader Rating: (5)	HELP: Differential Bushing Problem i have a 1990 fastback with z32 n/a vlsd with j30 axles. Got aluminum bushings for the front. First i unbolted the front 2 bolts. BTW i have jack underneath the diff just incase. Next i used plyer to grab the bolt collar and pulled down. Came out easy enough with the rubber wrapped around it. Cleaned off some of the rubber that was still stuck around the front diff mount. Now for the problem, I test fitted the bushings to see if they will fit and they wont. There is a lip on the diff mounting point where it is blocking the new bushing. I tried to hammer with a punch to see if it will budge and it didnt. So now im assuming its apart of the diff mount but i am not entirely sure. The bottom has a lip and when i felt above it, it was smooth. Not sure if i should machine the bushings in a lathe to make it fit in between. Also i do not have enough clearance to slip the top bushing above so i am hoping i do not have to drop the whole diff. Anyone have any ideas of lowering the diff about 2inch enough to slip the top bushing on? I am thinking i might have to drop the whole diff which i think requires removing 4 bolts to the drive shaft the 2 front bolts which are already off, the 4 rear bolts, and the output shaft bolts? Thanks. Car is current still on jackstands in a friends driveway and need to move it tommorrow.