Knocking noise due to loose exhaust bracket

[kevin316i]

Someone posted a while ago about experiencing a noise when coming off the accelerator. I had a similar noise, when you lift off the accelerator above 3000 rpm. Thought it might have been the centre bearing on the prop shaft but it turns out to have been a loose bracket on the exhaust. The mechanic drilled out the old rusted bolt and fitted a new one and the noise is now gone. Just something the check for.

[Brianmoooore]

This will be the bracket that mounts to the rear of the gearbox. It will rust through / work loose again at some point. I've removed the remains of it completely on two of my E30s and never had any problems with the exhaust.

[Jesus325iTouring]

Brian,you were lucky then!

On two of my previous E30's I've had the gearbox exhaust mount break,and i too left it,the result was the downpipes cracking,both in the same place.

Learn't my lesson though,when my Tourers one snapped,my bodywork geeza fabricated me a new for a fiver.

[topspark]

Secret is get one made up from stainless and it wont rot again . I did mine in 1994 and have never had to replace since.

lee

[johnono]

fair play, mines a bit crusty too, doesnt actually bear any weight though, with the exhaust floating above it by about 1-2 mm.

but "tings" when i hit a certain note on the exhaust

[Brianmoooore]

Its been missing from one of my Tourings for about 35000 miles now, since I fitted a new OEM exhaust. No sign of any cracking yet.
Should be a MOT failure point though, if anyone noticed.

[johnono]

replacing the bracket cant cost that much, ill get a part numb. and get a price on monday..

should do it though... its the only thing underneath that looks old

[Brianmoooore]

Bracket doesn't cost much, ( Its listed in the GSF on-line catalogue, but the quality of the last one I bought left a little to be desired), but it WILL work loose and rattle again.

[Jesus325iTouring]

I believe dealer ones cost about Ԛ£12,the only reason I had one made was purely as my mate was welding up my exhaust he said i'll make a new bracket up as well for a fiver,so i thought I might as well have it done.