Reducing exhaust pipe vibration (or using a different clamp) - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 10-09-2009, 04:37 PM   #1
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Oct 2007
Location: Arlington, VA
Posts: 63
Thanks: 0
Thanked 0 Times in 0 Posts
Ironduke is on a distinguished road
Default Reducing exhaust pipe vibration (or using a different clamp)

I'd noticed my exhaust pipe (b/w the cat and muffler, just before it curves right) was hanging pretty low, probably 4-5 inches. I mounted it back up and attached three stainless hose clamps around the heatshield and under the pipe to keep it in place. But now I've noticed that when I step on the gas there'* quite a bit more noise (though nowhere nearly as much if there were no cat or muffler). Any suggestions on an insulating material to absorb the vibration to pad the hose clamps with? Or maybe an alternative way of clamping up the exhaust pipe in this area? I couldn't really find anything nearby that looked like a place where a clamp had gone before. Thanks
Ironduke is offline   Reply With Quote
Old 10-09-2009, 04:52 PM   #2
Senior Member

True Car Nut
 
2kg4u's Avatar
 
Join Date: Sep 2006
Location: Windsor, Ontario / Detroit, Michigan
Posts: 4,804
Thanked 220 Times in 181 Posts
2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of
Default

There are universal hangers that have an exhaust clamp on one end, a metal strap with holes on the other, and a rubber-like material connecting the two. The metal strap with holes can be bent as desired, and the holes are for screws/bolts to attachment points on the chassis. As you learned, you can't have metal to metal contact between your exhaust and the car body or the vibrations make their way into the passenger compartment.
2kg4u is offline   Reply With Quote
Old 10-09-2009, 11:26 PM   #3
Junior Member
 
Toddster's Avatar
 
Join Date: Aug 2005
Posts: 0
Thanks: 0
Thanked 1 Time in 1 Post
Toddster is on a distinguished road
Default

Also the factory exhaust system has vibration dampening rods welded on every major bend after the cat....

Over time the welds brake and they come off resulting in extra vibration or resonation as what your describing.

Take another look under your car and look for little metal blocks about 1".....one one each bend of the exhaust after the cat where the rods were welded at one time. Are they still there?
Toddster is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Using RTV or GM Pipe Sealant with PTFE on Bolts bruzer75 General GM Chat 11 09-07-2010 10:33 AM
Cracked down pipe flex pipe. XEN 2000-2005 13 05-01-2009 10:01 PM
screw YOU, hose clamp!! zuper8 General GM Chat 20 04-30-2007 09:58 PM
Trunk lid carpeting: different for different years? Bugsi General GM Chat 8 01-23-2006 08:18 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 05:27 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.