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View Full Version : Exhaust hitting floorboard??

danman
06-29-2006, 06:47 PM
I just got a custom Y pipe built for my car and it is hitting under the driver side when I take off in 1st gear or get on it. What can I put between pipe and the car to make it not rattle. I wedged a shop rag in there for now, but I am looking for something heat resistant to put there. I was thinking about a high heat rubber spacer or something like that. I already tried heating it up and bending it down some. That didn't work.


Does anyone have any ideas on what I can use?
Zboner
06-29-2006, 06:57 PM
mind use to do this, u need to get under there and just make adjustments to the exhaust and maybe try moving the hangers around that might fix the problem also
RedT/Anumber1
06-29-2006, 10:27 PM
Use space age heat resistant foam. developed by NASA. LOL
Na just kiding, but I'm pritty sure there probably some kind of foam product you can wedge in there.
98bpmta
06-30-2006, 09:21 AM
The BFH mod.............. :drivin: :drivin:
BIG D's SS
06-30-2006, 10:27 AM
I believe Texas Speed Shop has a y-pipe hanger that is about $50 dollars that is made to fix the problem. I had that problem with mine and just adjusted it, but worst case scenario there is a hanger to fix it.
Raymond K. Hessel
06-30-2006, 10:54 AM
In addition to the methods listed above, the following work to varying degrees:

1. Poly motor mounts
2. Welding a valve spring in between
3. Heater hose
BIG D's SS
06-30-2006, 10:57 AM
In addition to the methods listed above, the following work to varying degrees:

1. Poly motor mounts
2. Welding a valve spring in between
3. Heater hose

Well you would need a stiffer tranny mount but that is gonna give you a vibration.

Don't know about a valve spring you might need to remove it and it will still vibrate.

The heater hose I tried that and it still hit and made a noise.
Raymond K. Hessel
07-01-2006, 12:15 AM
Well you would need a stiffer tranny mount but that is gonna give you a vibration.

Don't know about a valve spring you might need to remove it and it will still vibrate.

The heater hose I tried that and it still hit and made a noise.

Like I said..."varying degrees". Poly motor mounts will more than likely solve any y-pipe banging problem. On the other hand, a heater hose, a valvespring, TSP's Y-pipe hanger, are all just band-aids.
sunsetorangess
08-13-2006, 07:09 PM
Yepp been there done that, i finaly gave in and had a shop cut out a section and reweld a new pipe in place of it too eliminte the annoying banging... I also learned that bc of the bangin my ls1 was bein "retarted". It was setitn off the whole knock sensor deal. After i got it fixed and drove it around, Wow thats what the ol ls1 use too feel like
Big difference, almost like another car
J