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-   -   trany grind under rear wheel travel (http://www.clubcobra.com/forums/shop-talk/68571-trany-grind-under-rear-wheel-travel.html)

mzhun 04-11-2006 08:48 AM

trany grind under rear wheel travel
 
I shreded a T5 and replaced it with the Tremec about 3000 miles ago. the fit was much tighter in my B&B but the geometry remianed pretty unchanged. I noticed that when it is up on the rack and rear end fully extended that the wheels wouldn't turn. Once the rear wheels were jacked up a little the problem went away. Not one to take the car airborne while driving I figured this would not be an issue. yesterday, i hit a long dip in the road under acceleraton and felt/heard a harsh grind through the shifter handle. any ideas on what is binding???

blykins 04-11-2006 09:17 AM

What kind of angle is the driveshaft in?

John Owen 04-11-2006 09:21 AM

Probably the driveshaft - exceeding the flex capability of the u-joints. FFR cars have restraint cables to limit the droop.

Note: the Tremec may have a taller rear mount than a T5, or some of the rear structure of the tailshaft may hit the frame. It can be trimmed as needed.

mj_duell 04-11-2006 09:23 AM

Quote:

Originally Posted by blykins
What kind of angle is the driveshaft in?

Ditto. I believe you should be at 3 degrees with the car on the ground. With your wheels hanging, if the driveshaft is locking up my guess would be your tranny is at too high angle upward.

:3DSMILE:

--Mike

mzhun 04-11-2006 07:31 PM

all great comments and suggestions. when i installed the new tranny the position of the mount allowed the drive shaft to hit the frame so i had to put about 1/2 to 5/8 inch of washers to make it clear. i'm not sure what the resulting angle is but will check.


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