Ideas to quiet down the rear end or driveshaft?
04-16-2014, 01:44 PM
#41
Racer
Thread Starter
Yes, I have a noise issue coming from the rear end. I posted this last week but never got any replies:
"My '84-z51, (D36-3.07 gear), is making a high pitched warbly whining noise when i'm applying the throttle but quiets down when I take my foot off the gas. I'm not sure if it's the diff, bearings, u-joints, or what? The pitch and the warble frequency both increase with speed. By "warbly" I mean a constant amplitude or intensity modulation (pulsation). I'm thinking pinion bearing wear but a friend thought it sounded more like u-joints. Any acoustic experts on drive train noises out there?"
Just wondering if the OP had resoved his noise issue and whether just using 80W140 would help mine. Fairly certain it's not coming from the drive shaft or u-joints.
"My '84-z51, (D36-3.07 gear), is making a high pitched warbly whining noise when i'm applying the throttle but quiets down when I take my foot off the gas. I'm not sure if it's the diff, bearings, u-joints, or what? The pitch and the warble frequency both increase with speed. By "warbly" I mean a constant amplitude or intensity modulation (pulsation). I'm thinking pinion bearing wear but a friend thought it sounded more like u-joints. Any acoustic experts on drive train noises out there?"
Just wondering if the OP had resoved his noise issue and whether just using 80W140 would help mine. Fairly certain it's not coming from the drive shaft or u-joints.
Jim G
