Exhaust and seal rings question

vicj · 05-22-2011, 02:19 PM

When installing new mufflers, MUST one use new seal rings? If the old rings look like they are in great shape, can you just re-use them, or will that create small leaks, because they've been "shaped" over time in the old exhaust flange...?

Thanks

r4gs · 05-22-2011, 02:38 PM

i re-used the 'seal' ring and tightened the bolts securing the two flanges according to desired muffler positioning. no leaks whatsoever and about 6,000 miles now and no re-tightening of any bolts of any kind needed.

mfanatic325 · 05-22-2011, 09:08 PM

Pretty much only gaskets and donuts need to be replaced. Everything else should be re-usable for the life of the car (for the most part...).

vicj · 05-27-2011, 07:22 PM

Does anyone have "before and after" pictures of the exhaust flanges? I can't be positive, but I'd swear my flanges were completely flush with the stock exhaust, and now there's about a quarter inch gap after installing the Stromung. Almost as if the Stromung feed tube doesn't quite fit the seal ring perfectly.

If anybody has those sorts of pics, I'd love to see.

05-22-2011, 02:19 PM	#1
vicj First Lieutenant 10 Rep 316 Posts Drives: '06 M Roadster; 2010 Mini Join Date: May 2008 Location: Maryland iTrader: (0)	Exhaust and seal rings question When installing new mufflers, MUST one use new seal rings? If the old rings look like they are in great shape, can you just re-use them, or will that create small leaks, because they've been "shaped" over time in the old exhaust flange...? Thanks
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05-22-2011, 02:38 PM	#2
r4gs Viper Driver 36 Rep 1,311 Posts Drives: F-16 Join Date: Aug 2010 Location: Singapore iTrader: (2)	i re-used the 'seal' ring and tightened the bolts securing the two flanges according to desired muffler positioning. no leaks whatsoever and about 6,000 miles now and no re-tightening of any bolts of any kind needed.
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05-22-2011, 09:08 PM	#3
mfanatic325 ///M-fanatic 193 Rep 3,885 Posts Drives: '01 911 Turbo Join Date: Oct 2007 Location: Cupertino, CA. iTrader: (23)	Pretty much only gaskets and donuts need to be replaced. Everything else should be re-usable for the life of the car (for the most part...).
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05-27-2011, 07:22 PM	#4
vicj First Lieutenant 10 Rep 316 Posts Drives: '06 M Roadster; 2010 Mini Join Date: May 2008 Location: Maryland iTrader: (0)	Does anyone have "before and after" pictures of the exhaust flanges? I can't be positive, but I'd swear my flanges were completely flush with the stock exhaust, and now there's about a quarter inch gap after installing the Stromung. Almost as if the Stromung feed tube doesn't quite fit the seal ring perfectly. If anybody has those sorts of pics, I'd love to see.
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