Quote:
Originally Posted by dv657172
I appreciate all the thoughts and comments and while my question was basically about the large working angle at the front u-joint I appreciate the discussion and thoughts on pinion angle.
To be honest, I am not sure what to do with my angles. While they seem to work fine, I want to set them to be at the optimal level.
In the cars first outing many years ago with stock/orginal upper and lower control arms & a new 9" Moser rear, the driveshaft pulled out at about 1,000 feet and car went for a spin but no damage. After that the upper control arms were replaced (Hotchkiss double adjustable) and the shop set the pinion at what they said was -2.5 degrees. Fast forward to today (but only about 20 runs later on the car) and my interest in learning/doing everything I can myself, I have measured the following:
My engine angle is 4.6 degrees downward
My pinion angle is 1.2 degrees downward
Polyurethane bushing in adjustable UC arms, rubber in stock LC arms
I am assuming a 2 to 2.5 degree reduction in the angle of the pinion under load
Would you change anything?
I appreciate DCVING previous input on setup
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Get rid of them lower arms with rubber bushings. Start there my friend. Secondly make sure you have a proper length and diameter driveshaft. Lastly don’t over complicate your brain with angles. Just make sure your pinion is down 1-2 degrees.