 New Bursch Muffler, Annoying rattle |
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| warrenoliver |
 Aug 3 2007, 06:42 PM
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#1
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Member  Group: Members Posts: 363 Joined: 11-November 06 From: McFarland, Wisconsin Member No.: 7,199 Region Association: Upper MidWest  |
Just installed a brand new Bursch exhaust from Pelican. Took about a month to get it delivered but I finally got it. (IMG:style_emoticons/default/piratenanner.gif) I was interested to see if it really would sound nicer than my old, holey Sebring on my 73 2.0.
Switched it out (IMG:style_emoticons/default/sawzall-smiley.gif) and fired it up (IMG:style_emoticons/default/mad.gif) Sounds OK at idle, but when I rev it up a little, it sounds awful. It sounds like a buzzing or vibration/rattle is coming from somewhere. I checked the gaskets and did not find any obvious leaks. I checked the exhaust hanger and it is connected and tight. (IMG:style_emoticons/default/chair.gif) (IMG:style_emoticons/default/chair.gif) (IMG:style_emoticons/default/chair.gif) Now what? How do I know if the damn muffler is bad? Do these things sometimes come with a loose baffle or something? I really am not looking forward to returning the thing and then waiting for another month to get a new one. Heck the snow will be flying here in a few months! Warrenoliver |
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Replies(1 - 11)
| toon1 |
Aug 3 2007, 06:56 PM
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#2
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Senior Member Group: Members Posts: 1,849 Joined: 29-October 05 From: tracy,ca Member No.: 5,022 |
It might be touching your rear valence. Mine did, took a file and notched it, no more noise (IMG:style_emoticons/default/biggrin.gif)
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| Lavanaut |
Aug 3 2007, 07:32 PM
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#3
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Hungry Mind : Thirsty Gullet Group: Members Posts: 916 Joined: 20-June 06 From: Bend, OR Member No.: 6,265 Region Association: Pacific Northwest |
QUOTE(toon1 @ Aug 3 2007, 05:56 PM)  It might be touching your rear valence. Mine did, took a file and notched it, no more noise (IMG:style_emoticons/default/biggrin.gif) (IMG:style_emoticons/default/agree.gif) |
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| Johny Blackstain |
Aug 3 2007, 08:00 PM
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#4
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Walnut Elite Stratocaster player Group: Members Posts: 3,434 Joined: 5-December 06 From: The Shenandoah River Member No.: 7,318 Region Association: MidAtlantic Region 
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If it's not touching the rear valence, take the muffler off of the collector & shake it... see if something is rattling inside.
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| lotus_65 |
Aug 4 2007, 03:53 AM
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#5
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Senior Member Group: Members Posts: 1,608 Joined: 21-March 05 From: minneapolis, mn Member No.: 3,795 Region Association: Northstar Region |
mine does the same, just installed it and i get te exact same rattle. (brand new from performance prods.)
i thought that it might be the valance or actually contacting the lip of the chassis. if it's loose inside, just send it back, eh? |
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| rhodyguy |
Aug 4 2007, 07:27 AM
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#6
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,093 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
is the muffler making contact with the heat shield under the trunk?
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| Brando |
Aug 4 2007, 11:17 AM
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#7
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BUY MY SPARE KIDNEY!!! Group: Members Posts: 3,935 Joined: 29-August 04 From: Santa Ana, CA Member No.: 2,648 Region Association: Southern California |
QUOTE(rhodyguy @ Aug 4 2007, 05:27 AM) is the muffler making contact with the heat shield under the trunk? Mine was doing this when I first installed the glass pack. Keep in mind these cars are all hand-made... |
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| warrenoliver |
Aug 4 2007, 02:30 PM
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#8
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Member Group: Members Posts: 363 Joined: 11-November 06 From: McFarland, Wisconsin Member No.: 7,199 Region Association: Upper MidWest |
QUOTE(rhodyguy @ Aug 4 2007, 08:27 AM) is the muffler making contact with the heat shield under the trunk? I checked the clearance around the muffler and pipes. No contact with either the heat shield or the valance. I took it off and shook it, but no rattling. (IMG:style_emoticons/default/headbang.gif) I can not hear it when it is idling, just when I rev it up. I will have to wait til my son is home to help rev it up so I can feel for a leak somewhere. This is frustrating after the long wait to get it delivered and also the Pelican guys talked me out of the Sebring exhaust because the Bursch sounds much better! (IMG:style_emoticons/default/chair.gif) |
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| Brando |
Aug 4 2007, 04:43 PM
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#9
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BUY MY SPARE KIDNEY!!! Group: Members Posts: 3,935 Joined: 29-August 04 From: Santa Ana, CA Member No.: 2,648 Region Association: Southern California |
Is it making contact with the back of the transmission?
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| NoEcm |
Aug 4 2007, 07:27 PM
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#10
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Member Group: Members Posts: 95 Joined: 20-June 05 From: Seattle, WA Member No.: 4,309 |
I had a brand new Bursch exhaust do the same exact thing ~5 years ago. Turned out to be a bad muffler. Sent it back to Bursch for a warranty replacement and I got a new one in 3 weeks.
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| shaggy |
Aug 4 2007, 08:04 PM
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#11
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mechanic/welder/fabricator Group: Members Posts: 702 Joined: 26-September 05 From: Gilbert, AZ Member No.: 4,869 Region Association: None |
lose the valance.
show off the purty muffler... + removing the valance will promote cooling. and its just drag. -jim |
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| SGB |
Aug 5 2007, 12:02 AM
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#12
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just visiting Group: Members Posts: 4,086 Joined: 8-March 03 From: Huntsville, AL Member No.: 404 Region Association: South East States |
Check to see if the warm air guides (sheet metal between the heat exchangers and crankcase) are tight. I have a broken tab on each side and sometimes one side or the other will rattle like a mofo until I bemd on it...
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