whirring differential

[Jfogs]

when driving, my differential whines/whirs quite noticeably. i was wondering if there's some kind of fluid or adjustment that i could make to quiet it down -- i've already replaced the fluid

[baptie0]

probably cheaper to swap it for a good second hand one, what model of e30 is it?

[Barx325i]

yep, adjust it for a new one as diff rebuilds are expensive.. unless it's limited slip then its just come to the end of its lifespan.

[ijahn2000]

If it is a limited slip one at the end of its lifespan, send me a message, as I need a LSD for rebuilding to rally spec.

Cheers

[Rav335uk]

PM Gareth on here, he rebuilds diffs for zoners.

[tunnyx]

I've heard a fluid change can make a lot of difference?

[gareth]

whining while driving in a straight line is usually the bearings and a relatively easy for me to do - debatable as to whether it's worthwhile on an open diff though.

a whining LSD is almost always saveable - even if the bearings and gears are shot as it can be rebuild with an open diff to donate parts. a dodgy LSD pack won't make any noice while driving in a straight line as it's not doing any slipping at all

[Jfogs]

ahh, it's a 325es, 1986. it has a LSD apparently but i live in the US so im guessing a garage would charge me an arm and a leg, if they would even do it.....?
So either way is it likely that it IS at the end of it's lifespan?? it functions fine, the noise is the only issue..

[gareth]

if it's a LSD, it's worth looking at properly - even just for the resale value.

do you have a local gearbox rebuilder that could take a look at it?

new plates can be sourced from driveandtraction.co.uk seals from BMW and bearings from any bearing supplier or BMW.