Twisted axle as it relates to gear whine????
12-29-2008, 08:00 PM
#1
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Twisted axle as it relates to gear whine???? I rebuilt my 7.625 10 bolt a while back. I painstakingly measured every clearance until I got the backlash and the pattern just right. I put in GM OE 3.73's (not motive gears). The rear end was completely quiet. I went through the break in period and then some before I beat on it.
Fast forward to a few months later. While running at the local strip I twisted a stock axle. I twisted it pretty good. The splines were visibly distorted and I had to beat the axle out of the carrier. I now have a whine on acceleration and deceleration. I took the rear end completely apart, but left the pinion in the housing. I checked the backlash again and it was fine, replaced the carrier bearings with brand new ones, and didn't see any damage from the twisted axle but I still have the same whine.
My question is.... How did twisting this axle cause the rear to whine if everything appears normal. The only thing I can think of now is to try to tighten the pinion nut a fuzz. Does anyone think that this will help the whine? Do I have any other options other than replacing the gears?
Josh
Fast forward to a few months later. While running at the local strip I twisted a stock axle. I twisted it pretty good. The splines were visibly distorted and I had to beat the axle out of the carrier. I now have a whine on acceleration and deceleration. I took the rear end completely apart, but left the pinion in the housing. I checked the backlash again and it was fine, replaced the carrier bearings with brand new ones, and didn't see any damage from the twisted axle but I still have the same whine.
My question is.... How did twisting this axle cause the rear to whine if everything appears normal. The only thing I can think of now is to try to tighten the pinion nut a fuzz. Does anyone think that this will help the whine? Do I have any other options other than replacing the gears?
Josh
12-30-2008, 01:47 AM
#2
It distorted the case.
If you look at EPP's website or posts here you'll find that he says a 12 bolt will make more noise after being run hard. It's due to case distortion caused by the torque arm.
If you look at EPP's website or posts here you'll find that he says a 12 bolt will make more noise after being run hard. It's due to case distortion caused by the torque arm.
