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Old 12-25-2012, 02:12 PM
ant_8u ant_8u is offline
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Cause of Whining Differential?

I'm planning on rebuilding my differential before refitting it to the chassis

From what I've read, these differentials have a tendency to whine

Since my car was a non-runner when I got it I have no idea if my diff has any problems.....but I'd rather rebuild it now, than facing the possibility of removing it from the car once it's back on the road

From speaking to other owners I've been told the whining (when present) is caused by the hardening on the crown wheel becoming worn through

The noise will be loudest on acceleration either disappear entirely or become very low on overrun/deceleration

The pinion bearings can also be a problem, but the noise is from the centre of the car (not on one side) and is very short term, i.e. the bearing collapses, the oil leaks out and the differential seizes


Does that sound right that the crown wheel hardening would cause the whining?

Can I do anything to check for this before reinstallation?

I'm planning on fitting new shims, bearings, and gaskets, but I'm a little worried about the crown wheel

As ever, your insight is most appreciated
Thanks, and Merry Christmas to you all
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