jon350z

just installed the stillen exhaust and random tech cats, the y pipe is rattling against the crossmember, it doesnt clear it, can anyone help me out, how would i go about gettin it up further? it rattles when i turn or hit a bump and when i downshift.... anybody else have this problem.?

arizzee

iTrader: (28)

When I installed mine, I used a wood block to push up the X pipe higher than level then tightened the u-clamps. That way when it settles it should clear the crossmember with np.

350Zteve

iTrader: (6)

This is pretty common when running the Stillen and aftermarket cats. They cause the exhaust to sit a bit lower. One thing that works is to wrap the two pipes with header wrap in the section where they cross over the cross member.

jon350z

what do you mean you pushed it up using the u clamps, the exhaust is touchin the crossmember, how do the u clamps make if not touch, i was thinkin if i weld a piece of metal in between the crossmember and the exhaust it wouldnt move, would that make the exhaust rattle more...?

monkey7

what you can also do is get spacers. Place the spacers between the frame and cross member. You can pick them up at any muffler shop. I used a .25 of inch spacers and the rattle was gone.

GPorsch

DO NOT try to weld anything into your car!
DO NOT use spacers!
These are shadetree mechanic temporary fixes. The wood block idea listed above is a good idea. Loosen the exhaust clamps, insert a wood block of the appropriate size in between the pipe and the crossmember to space it, then re-tighten all the clamps.
This should give you adequate space between the pipe and the crossmember. Even in the instuctions for the exhaust it says that you might have to use a jackstand to support the exhaust in the correct position when installing.
Hope that takes care of your problem. If you're still having problems just call Stillen and ask them. I'm sure they could help.

jon350z

the guy who put them took the crossmember down and put washers in to space it about an 8th of and inch, so far so good dont hear anything unless i hit big bump......is that bad.

monkey7

No, because there still enough screw to hold the cross member down. The exhaust just bangs around at times.

Some people who use highflow cats use the spacers due to the highflow cats position lowers the exhaust. Thus causing the exhaust to bang on the cross member.

StarcraftBW

iTrader: (10)

**** i have the same problem w/ my stillen and haven't had it fix yet. I'll try "to wrap the two pipes with header wrap in the section where they cross over the cross member"