E30 Zone

I posted up a while ago about this and i put it to the garage as i hadn't a clue. They couldn't find anything either as it stopped making the noise...however. Its back.

Heres the symptoms:

Knocking noise coming from drivers rear
Only happens when in gear and driving, if you let off it goes away i think
If i sit parked up and use the clutch to bump forward or back then it makes the noise.

Theres a series of things it could be? driveshafts? Diff bush? centre bearing? Cv joint? Wheel bearing?

Heres the video:
http://s91.photobucket.com/albums/k317/ ... dnoise.flv

Anyone any ideas?

Any help much appreciated.

Sounds to me like possibly a CV joint, it seemed to be occurring exactly 1x per turn of the wheel indicating a problem between diff output & roadwheel as opposed to anything inside or befor the diff in the drivetrain which would happen more often, if you understand what I'm trying to say... Either way, I'd be looking at all the components that rotate with the right rear wheel.

If that noise it indeed once, per turn of the wheel, I'd be taking off the rear drum for an inspection.
Non standard wheel bolts?

Sounds like a long wheel bolt to me

Take them out one at a time to check

Thanks guys. But....a long wheel bolt?

Oh yes, dont be fooled by the hex heads looking the same, I have found BMW bolts that are approx 3mm longer than the standard E30 type

DanThe wrote:Oh yes, dont be fooled by the hex heads looking the same, I have found BMW bolts that are approx 3mm longer than the standard E30 type

I took some aftermarket alloys off an E30 breaker last week, and used two of the bolts to refit a steel wheel in one of their places (just to keep the shell mobile), and the hub jammed up.

Cool, il give em a check tommorro guys. Il let you know. Hope its a simple as that but i doubt it.

hammoj28 wrote:Hope its a simple as that but i doubt it.

If I were a betting man.......

i know this might sound stupid did you get new tyres lately or a puncture repaired
it could be when the tyre was off something might of fallen back into the tyre while refitting it like a balance weight or something.thus making that nosie. or you might just have a screw are big nail stuck in the tyre.
i work in the tyre game and have seen it loads of times. jack up the back and spin the wheel by hand and check of something stuck in the trye.

I got new tyres at the end of last year but it really doesn't sound like that. Il have a look when im next home. Never got a chance last time.

Have you still not checked the bolts?

Lol, i never had time as i went back to uni the morning after you said, plus the car was sitting outside and it was snowing etc and id spent my whole weekend in a freezing garage working on the mini. Will do when i get home weekend after this.