Noticeable clunck in my Dana44\'s.(Quadratrac) Advice pls
I just returned to the road, a rebuilt (now fiberglass) 1979, cj7, 258 inline 6, with a TH400 Auto and Quadratrac,w/reduction transfer case. Stock Dana 30's and Dana 44's. The only notable modification made was a 1 and 7/8 shackle lift. Now, that I've been driving my "Work in Progress" I have found whenever I make a moderately sharp turn, (right or left) I'ved noticed a "clunk" or "jump" in the rear end. At 1st, I thought the problem was in the rear end itself, so I swapped in another Dana 44 axle/differential that I knew was in good working order, only to find, I had not eliminated the problem. Also want to add, both front and rear axles have the same gear ratio (to the best of my knowledge) and both drive shafts have new U-joints.
Do I have to shim the rear end to get a better angle on the drive shaft because of the shackle lift? and if so, how much is recommended? Or, could it be, my rear drive shaft is simply out of alignment, ie.. out of balance? Oh... that lousy (clunk/jump) isn't present while driving straight ahead or during a wide turn, (like a right or left turn at an intersection). Any advice on how to eliminate that damn clunk would greatly welcomed.
DrummondCJ
I just returned to the road, a rebuilt (now fiberglass) 1979, cj7, 258 inline 6, with a TH400 Auto and Quadratrac,w/reduction transfer case. Stock Dana 30's and Dana 44's. The only notable modification made was a 1 and 7/8 shackle lift. Now, that I've been driving my "Work in Progress" I have found whenever I make a moderately sharp turn, (right or left) I'ved noticed a "clunk" or "jump" in the rear end. At 1st, I thought the problem was in the rear end itself, so I swapped in another Dana 44 axle/differential that I knew was in good working order, only to find, I had not eliminated the problem. Also want to add, both front and rear axles have the same gear ratio (to the best of my knowledge) and both drive shafts have new U-joints.
Do I have to shim the rear end to get a better angle on the drive shaft because of the shackle lift? and if so, how much is recommended? Or, could it be, my rear drive shaft is simply out of alignment, ie.. out of balance? Oh... that lousy (clunk/jump) isn't present while driving straight ahead or during a wide turn, (like a right or left turn at an intersection). Any advice on how to eliminate that damn clunk would greatly welcomed.
DrummondCJ