how well does this work?
yes prothane is poly. they will keep the engine more secure and less rocking for sure, the tranny will tighten up also.
I would think it would stop exhaust banging but might not, we cant be certain
I would think it would stop exhaust banging but might not, we cant be certain
Originally Posted by 99blancoSS
Spongy soft factory mounts are the issue.
you dont know that. It was the issue for YOU, but perhaps not for him. Everyone has said that about my car and its not that at all, but I'm being told from Kooks that it was the way the headers were installed. My Y-pipe is touching the bottom of the car constantly. Looking at them, common sense will tell you that mine has Nothing at all to do w/ the motor mounts. Now, once I get the y-pipe off of the bottom of the car and it starts banging when I accellerate, that will be a different story. but the noise i'm hearing now is not related to motor mounts.
Originally Posted by 01pewterbird
lol, I didn't. I stuck some heater hose wrapped in header wrap in-between to stop the actual banging, so it still hits but it's cushioned now. Although I think my y bangs in a different spot then most, Mine practically touches all the time right where the collector goes into the cat, so that first floor brace. I specifically told Stainless Works this had been a problem with others I had spoke with and to make a note while making my headers to look out for this, but they obviously didn't 
. The headers themselves are the actual problem, primaries have to much bend in them, angling the collector up, making it way to close to the floor. I want to add poly mounts to fix the problem once and for all but I'm scared they will raise the motor some and make the problem even worse 
. The headers themselves are the actual problem, primaries have to much bend in them, angling the collector up, making it way to close to the floor. I want to add poly mounts to fix the problem once and for all but I'm scared they will raise the motor some and make the problem even worse
Originally Posted by fuseone
well mine does it when im driving. like when i go to give it gas
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From: reading,pa
no the ypipe aint touching when the engine is off like there is about a good half inch clearnce but its when im driving you hear it or if i rev the motor you can hear it but it is really loud while driving
Originally Posted by fuseone
no the ypipe aint touching when the engine is off like there is about a good half inch clearnce but its when im driving you hear it or if i rev the motor you can hear it but it is really loud while driving
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Originally Posted by fuseone
you sure because i had my dad look under the car when i gave it gas and he was like yea i see the pipe moving but we couldnt really see where it was hitting.
No. Im not sure, but the general rule in this section is that if you're having exhaust issues, its 100% motor mounts.
"Yea, my exhaust didnt add the power I was expecting"
LS1 fallback excuse: "Its the motor mounts. change them."
From what I have heard, Poly mounts will keep the motor in 1 spot, not allowing it to move and keeping the pipes in place. If the pipes are hitting the car under acceleration, then that kind of points to the motor mounts. If you can move the exhaust over or anything to keep it from hitting, id do that. Perhaps even something like the bumpstop bracket.