Vibration from exhaust. Any help?
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From: MONTGOMERY,AL
Vibration from exhaust. Any help? I have a 95Z mods in profile. The exhaust is a full 3" with a dynomax bullet in place of cat, and 3" ele-cutout after the axle, then a dynomax ultra-flow welded muffler out the back. I have checked everything and it is coming from the exhaust. Everything on the car is poly and I know I will have vibration, but this is a good bit.
After my install, my y pipe on the driver side was banging against the floor board something terrible, right on the edge of the tranny cross member. So i rigged up some padding and rapped it in header rap and held it in place with some big house clamps. Works like a charm 
Thread Starter
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From: MONTGOMERY,AL
Its more of a resonance at 3500-5500 rpm and letting the gears slow the car down. I have about .5" distance around the whole exhaust, so its not hitting. I have noticed that the exhaust is very tight and does not move, but if you hit the the pipe just before the rearend it seems to resonate. Just dont know how to fix it. Thanks for the help.
Teching In
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I had the same problem after installing 3" slp exhaust, I also had about an inch of clearance all the way back and i found out on decel it was hitting the little floor pan brace behind the tranny. I installed an slp driveshaft loop in place of the stock piece and the concern was gone.
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From: MONTGOMERY,AL
I have the UMI tunnel mount torque arm and it has clearance. All the mounts are poly but I know it should not be that bad. I do thank you for all the help. I may need to make another exhaust mount by the back seat and see how it does.
