LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Y-pipe hitting floorboard...suggestions?

Old Mar 30, 2004 | 12:16 PM
  #1  
Cmr0z28's Avatar
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Y-pipe hitting floorboard...suggestions?

On the driver side, it hits that spot where the floor comes down in front of it. I banged it in, but it still hits when the motor torques.....anything I can stick in there? Or do I have to take it to an exhaust shop?
Old Mar 30, 2004 | 12:54 PM
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I wouldnt take it to the exhaust shop, unless there is absolutely nothing left to do besides mess with the pipe! Mine is hitting the frame right in the middle of the y-pipe. when ever my starter decides to go, and the y-pie must come off im gonna gring back the frame a little. try giving yours a little more clearance. if that doesnt help, run open maifolds !! hahahaha j/k
Old Mar 30, 2004 | 01:03 PM
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brandboZ28's Avatar
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Use some heater hose and some hose clamps. Works like a charm.
Old Mar 30, 2004 | 03:08 PM
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.

you dont think a heater hose will melt if it is on the y-pipe?

I wraped mine with leather and ended up burning, i finally just stuck a pice a meatel there but now i get a bad vibration inside the car, but it isnt that meatel on meatl sound anymore
Old Mar 30, 2004 | 03:13 PM
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you could get a BUNCH of header wrap. and wrap it over and over and over til it creates a cushion.
Old Mar 30, 2004 | 03:13 PM
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mine is hitting the bolt that holds the fuel lines, I've got to figure that one out myself.
Old Mar 30, 2004 | 03:26 PM
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Check your motor mounts guys... If the mounts are worn/bad it will let the engine twist farther and might let it bump.


Have you ground down on the tranny crossmember lip any yet? Most people (including myself) have to grind part of the lip way.

What brand of y-pipe is it? My Mufflex y-pipe has two slip fit joints on the driver's side of the y to allow adjustment of that section. Mine is tilted slightly downward away from the car.
Old Mar 30, 2004 | 03:47 PM
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Weld in some sort of spring in there. Valve spring maybe?
Old Mar 30, 2004 | 05:59 PM
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It's not hitting that...it's hitting where the floorboard comes down and across right after the collector. It's a Pacesetter Y-pipe. I'm going to try the header wrap idea.....now if I could just stop the leaks on the slip fits...
Old Mar 30, 2004 | 06:26 PM
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Just what LWillmann says - motor mounts first.

Greg
Old Mar 30, 2004 | 09:25 PM
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y pipe hitting

For a temporary fix loosen the bolts on the transmission cross member and put some shims in between it and the frame. You can use 4 or 5 washers on each bolt. That will bring the back of the trans down, bringing the engine and headers with it. It just might give you the clearance you need.


I just installed these headers myself but I made my own y-pipe with bolt up flanges.
Old Mar 30, 2004 | 10:21 PM
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Is that gonna mess with the pinion angle?
Old Mar 30, 2004 | 10:36 PM
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slightly but it depends on how much you lower it. also I listed this as a temporay fix.
Old Mar 31, 2004 | 11:55 AM
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I stuck a pry bar in there and pryed away....it doesnt hit anymore, only at 2500....looks like I have more prying to do, lol
Old Mar 31, 2004 | 07:27 PM
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If you can heat the pipe up red with a welding torch over a large enough area it will make it easier to dimple it where it's hitting.
Just don't set the fuel lines on fire.

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