1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

gsl-se rear end noise

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Old 10-21-06, 01:24 PM
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gsl-se rear end noise

So guys, I just got done switching over to a gsl-se rear end. I cleaned it up, and installed new bearings, oil seals, and the pinion oil seal and nut. The problem is, I went to drive it around, and it's incredibly noisy. Straight, around turns, fast, slow, there's a constant grinding sort of noise. Anyone have an idea what the problem may be from this discription? I know it's not much. THanks!
Old 10-21-06, 03:33 PM
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when you removed the pinion nut you changed the pre-load on the ring and pinion gears. your rear end is not set-up properly anymore as their contact pattern is either too deep into the ring gear, or not enough. The FSM shows the proper way to set it up.
Old 10-21-06, 03:34 PM
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Are you using gear oil with a Limited Slip Additive? If not try changing the fluid to one with the LSD additive.
Old 10-21-06, 03:35 PM
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yep the pinion and ring are not properly meshing causing the noise.
Old 10-21-06, 04:27 PM
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alright, I've barely driven it like this, I'm talking less than a mile. Do you guys think I've damaged anything? The hayne's manual said just to torque the nut to 94 ft/lbs, but I guess that didnt quite work. Am I going to need a new pinion nut and seal, or should I be able to salvage them?
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