"Tunnel" noise = Motor Mount?

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Dec 13, 2011 | 01:15 PM

vbv

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Heel & Toe

Joined: Apr 2009

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"Tunnel" noise = Motor Mount?

Running a 2007 LT1/ST1 w/Kooks headers/crossover pipe/comp exhausts. Recently when making strong rolling right turns I am hearing noise as if the exhaust system is hitting the body tunnel. Only on right turns, does not seem to impact left turns; has only started occurring in last few weeks. Nothing in the form of "hard/strong" turns, simply right turns at corners equipped with "yield" lanes. Anyone agree that this could be a broken motor mount? Any additional ideas?

Dec 13, 2011 | 04:40 PM

Eric D

Tech Contributor

Joined: May 2008

Posts: 2,843

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From: Howell Michigan

St. Jude Donor '09-'10-'11

Quote:

Originally Posted by vbv

Have you put the car up on a hoist or ramps and had a look? My bet is it has nothing to do with the engine mount. Most likely as you pointed out, something has shifted with the exhaust pipes allowing it to ground out during a turn. While under the car, (cold) push on the exhaust system to the left and see where and what it is hitting. It doesn't take much to make a lot of noise.

Last edited by Eric D; Dec 13, 2011 at 07:38 PM. Reason: miss spelled word....

Dec 13, 2011 | 05:11 PM

luiscave

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Had the same issues on my 2006 convertible. Had kooks headers and x pipe. My noice was comming from the area of the header x-pipe were it was close to the heat shielding under the car. I got a hammer and nose pliers and bend the heat shield away from the pipes.

Easy fix.

Dec 13, 2011 | 05:18 PM

vbv

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Heel & Toe

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Thanks for the optional (no/low cost) solutions - certainly worth a try prior to heading to the local dealership at $90/hr. Not entirely sure why I could not have thought of that myself(?).

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