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View Full Version : exhaust flange (front to tailpipe) questiobn



rob101
02-04-2006, 10:25 PM
Hello everyone,

just a quick question, i had one of the bolts fall out of the flange connecting the front and tail pipes i put some new bolts on the left most flange, I didn't want to do them up too tight (exhaust heat and expansion etc.) I was wondering whether these flanges are meant to be flush up against each other or is their meant to be some clearance. after doing up the bolts i took it for a spin but it still seems to be leaking a bit and i am wondering whether i didn't do the flange up tight enough or the gasket ring needs replacement.

exhaust diagram (http://www.realoem.com/bmw/showparts.do?model=HD52&mospid=47375&btnr=18_0158&hg=18&fg=20)

i am talking about the flanges that are no. 5 in this diagram

rob101
02-04-2006, 11:23 PM
on second thoughts it would appear that i have lost an gasket ring somewhere, i am correct in assuming that the exhaust gasket ring seats in the groove on those flanges?

Kalevera
02-05-2006, 12:16 AM
Yes, you need gaskets and they usually only work one or two times around as they'll compress to fit the junction. Otherwise, there'll probably be an exhaust leak.

best, whit