Exhaust donuts

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Exhaust donuts

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Chevrolet >> Chevy Trucks, Vans & SUV's >> Suburban >> Exhaust donuts

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Exhaust donuts - 12/12/2006 11:50:36 PM

bk94si

Posts: 13
Joined: 12/12/2006
Status: offline

Has anyone else had problems with exhaust leaks where the donut gaskets are? It has been fixed by a mechanic once, by me once, and I can hear it happening again (over about 5 years). Anyone with a fix that will last longer?

Post #: 1

RE: Exhaust donuts - 12/28/2006 5:26:14 PM

Dondobe

Posts: 48
Joined: 7/19/2005
From: Tucson, AZ United States
Status: offline

BK94si, I've had the same problem on my "99"(189 K). We had to grind the nubs on the cast iron flange so it will tighten better. Then after we did that the pipe cracked around the flange (fatigued Pipe). That was fixed at a muffler shop by making a new flange and doubling the flange on the pipe (one inside the other ) I haven't had any problems since.
Good Luck, Dondobe

(in reply to bk94si)

Post #: 2

RE: Exhaust donuts - 1/6/2007 10:41:42 PM

n0dih

Posts: 5
Joined: 1/6/2007
Status: offline

I just replaced the pass side donut on my 99 K2500 454 Suburban and the new one was considered "second design", it was white and thicker. I hope it lasts....

(in reply to Dondobe)

Post #: 3

RE: Exhaust donuts - 1/11/2007 9:05:26 AM

gmpartsland

Posts: 4
Joined: 1/5/2007
Status: offline

I,ve also had good look with the thick white donuts. I'll keep you updated if they go again

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http://www.gmpartsland.com/

(in reply to n0dih)

Post #: 4