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post #1 of (permalink) Old 01-20-2008, 02:26 PM Thread Starter
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how much shim??

Hope you blue oval guys don't mind me asking a question here.

How much does the driveline angle really change when pinion shims are added to a vehicle with leaf spring suspension such as a ford bronco,p/u,or jeep????

the specs are:
89 jeep cherokee 4.0 5speed
swapped in chrysler 8.25 axle
sye and double cardan driveshaft
5.5" rubicon express lift

I measured my drivline angle and the pinion angle is 10* and the driveshaft angle(or slope) is 20*
That means there is a 10* degree difference between the two.
It was recommended to me that I should go with 8* shims.This sounds like alot of shim.I know I want the pinion angle to be 1-2* below the output angle....
I'm thinking that I should go with 6*shims????
It was also advised to me that a shim changes driveline angles 1.5 by that theory an 8* shim would put me around 2* ABOVE(1.5x8*=12*)
Conversly....a 6* shim would put me about 9* which would be about 1* under to account for axle wrap upon acceleration.
Sorry for the long winded post.....
A stupid man learns from his own mistakes,while a wise man learns from others mistakes
jeepdeepfreak is offline  
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