LT1-LT4 Modifications 1993-97 Gen II Small Block V8

y-pipe is hitting

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Old 03-02-2008, 05:37 PM
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Default y-pipe is hitting

how can i get my y-pipe to stop smackin the under side of my car, i tryed bending it down ive tryed readjustings all of the clamps all i can think of is stick a clamp in there so it just holds it down.... or do i need to do poly motor mounts which i really dont want to do
Old 03-02-2008, 06:06 PM
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My tunnel mounted torque arm fixed it. The stock one pushes up on the tranny tailshaft, which also pushed the the y-pipe closer to the floorboard.
Old 03-02-2008, 06:14 PM
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what brand is it? jw
Old 03-02-2008, 06:24 PM
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Originally Posted by M6 Swap
what brand is it? jw
UMI

I would check out Midwest Chassis & Performance. They make a nice one too.
Old 03-02-2008, 06:45 PM
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sorry, not the torque arm the y
Old 03-02-2008, 08:15 PM
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oh, pacesetter
Old 03-02-2008, 10:11 PM
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how would that push the y pipe farther away from the bottom of my car im jw i just cant picuter how it would.. but im deffently goin to look in to it
Old 03-02-2008, 10:27 PM
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Well think about it. The rear end movement pushes the torque arm upward.. which is attached to the tranny tailshaft. Tranny is solid to the motor, headers are solid to the motor, and y-pipe is solid to the headers. So since everything is rigidly mounted, when the tailshaft goes up, so does the y-pipe.

I didn't say a tunnel mounted TA will push the y-pipe DOWN. But it would eliminate the TA from pushing UP. Now the only movement that could bang the y-pipe would be from the engine torque.
Old 03-02-2008, 10:40 PM
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Mine bangs the brace under the drivers side with engine torque...

I took my y-pipe and smashed it a little more 0 shaped and it helped a whole lot, it still does it, but it takes alot more to make it hit.

During spring break I'm gonna yank it back off there and do a little more bending and try to fix it for good, I may even reshape the brace that its hitting.

I thought mine was hitting the torque arm at first, but finally found it was smacking the brace under the drivers seat where it crosses under.

-Rick
Old 03-02-2008, 10:42 PM
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I had to drive mine the next morning after my install and didn't have time to fix it right till that next weekend. So I took a peice of vaccum hose and wrapped it in head shield tape and stuffed it between the brace and the y-pipe till I could get to it later.

-Rick
Old 03-03-2008, 08:08 PM
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alright Ralls that makes alot more sense thanks for explainin it a lil more, and im defrently goin to have to look in to one of them thanks
Old 03-03-2008, 10:05 PM
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My Pacesetters where doing the same thing, turned out I had a pretty worn motor mount, Replaced them with the Poly inserts problem is gone now!!!
Old 03-04-2008, 03:06 PM
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yea thats what i was told also but i also heard motor mounts are a B*TCH!! so im thinkin about replacin them but im kinda dreddin it
Old 03-05-2008, 03:35 AM
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I just did poly motor mounts today for my friend. It's not hard. The only hard part would be taking it off the car. The motor was already out for me, so that was easy. Once you do that, just drill the 5 rivets and replace the rubber mount. Simple. I'm actually thinking about doing mine since my motor is out as well.



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