Just put in Redline tranny fluids in my 87TII now it grinds when i shift to reverse. Anyone have an idea

75X90 diff and MST90 tranny.

 

when you shift into reverse?... you know that you shouldnt shift into reverse while moving, if you are moving it will grind... so as long as you are stopped you shouldnt get any grinds

sounds like your clutch might not be fully releasing or something

*edit*
i know mine just sometimes doesnt want to go into reverse, a quick tap of the clutch fixes that though....

does it grind when you shift in, or when you are moving?

 

Seems to be a common problem. Try going to third and then to reverse.

 

of course when stopped you silly!=) It just started happening after i put in Redline fluids.

and yes i filled it up pretty good.

 

 

im having that problem too.....it grinds as soon as you try to start moving......try and put it in another gear then change to reverse

 

i usually put it in 2nd before i go into reversebut sometime i forget and if i hold the stick goin into reverse and let the clutch out a little it slips right in..

 

I agree, Clutch is not releasing or pilot bearing is worn out. The thicker trans fluid probably helped to slow the trans input shaft where with the redline it rotates easier.

Reverse does not have a syncro so it will grind if any of the trans parts are spinning while you try to engage it.

 

My car does that thing too where if you let the clutch out a little it will go in. But other times it just grinds anyways. If my car like sqeaks while its running but when I put the clutch in, it stops sqeaking, is that a piolet bearing? My car sometimes grinds when I put it in reverse (not moving) and always sqeaks

 

most of my gears grind.. is that bad?

 

hey jeff, i got the keys to the 10th A.E. wanna help me put in the ACT clutch?!

 

i have a really bad problem putting it into sixth.....grinds mad crazy.....otherwise i double cluith...thro it into second and then to reverse or first.....the other four gears are fine

 

there have been threads about this before, but basically, it was something to do with synchronizers. Reverse will grind if anything is moving too fast, so just put it in another gear (3rd usually works) and then pop it in....its not a problem with your tranny, it does it on many cars