DANSBIRD

iTrader: (2)

Its vibrating the hell out of my car It hits my car when I hit a bump and its got stuff rattling inside the car and its driving me nuts. The y-pipe is touching the bottom of the car on the driver side and the intermediate pipe is touching the back of the car.

I know Kooks are known for their ability to tuck the exhaust in tightly, but this is getting old. I took it to the exhaust shop and they did as much as they could w/out hurting anything. (Seeing it was a complete stainless system, they were careful). I did order the bumpstop bracket from Thunder Racing that is supposed to help the driver side, but I dont see it happening. THe whole exhaust is sitting just too high and needs to come down a bit.

Sorry for ranting. I just simply wanted headers on my car and I never knew it was going to be such a PITA. I havent seen this problem w/ anyone else's Fbody that i've ridden in.

/rant.

DANSBIRD

iTrader: (2)

The bumpstop bracket will be in this week hopefully, so maybe that'll help, but i doubt it.

TheSilverOne

iTrader: (22)

did you upgrade the motor mounts?

DANSBIRD

iTrader: (2)

No. Iv never heard of upgrading the motor mounts for a header install

Coy

iTrader: (4)

Depending on the milage of your car it's a great idea. When the rubber mounts break down they let the motor (and everything connected to it) move a good bit. I had pretty bad vibrations and banging before I installed mounts, and it got rid of all of it.

Is the Y-pipe only hitting when it is under a load, or is it up against the car all the time?

STRETCH'S T/A

iTrader: (13)

I have the exact same setup and my catted y banged the drivers side floorboard also. Took it to an exhaust shop and they heated up and flattening the y pipe just a little bit where it was contacting the drivers side floorboard. Hasn't been a problem since.

SweeTbone

iTrader: (8)

I read ALL about the Poly Motor Mounts before my header install last year. I decided not to do them, and don't have a single problem with my Kooks/GMMG. 2000 TA with 54K on stock motor mounts. I guess with a higher mileage car you may see some sagging with your mounts that would cause the banging. See what the bumpstop does, then try the heater hose method on the other one if that doesn't totally cure it. Hopefully you get it cleared up since it's a kick *** system IMO.

TheSilverOne

iTrader: (22)

i guess you don't read this section much

SSwanner

iTrader: (128)

now dan, that night i called you i specifically told you to put POLY MOTOR MOUNTS in that thing while they were putting the headers on it

DANSBIRD

iTrader: (2)

I have heard that poly mounts will lead to the car riding alot more rough. Considering my car is a DD and not a track car, you can see why I made the decision I made.


The car has 130k miles on it & is an 02.

DANSBIRD

iTrader: (2)

Its against the car all of the time.

matt94z

iTrader: (49)

Mines a dd and I have poly mounts. The car feels tighter and the ride isn't harsh at all, just about like factory mounts.

2fast97Z

iTrader: (20)

daily driver and have the motor mounts....feels like stock except for the cam lope

Coy

iTrader: (4)

wow, did the shop that tried doing the adjustments heat the pipes up to try to bend them away.

When I mean against the car I mean up against the floorboard. I wonder why it (the y pipe) would be like that?

litle88

iTrader: (20)

I know what you mean!! I installed the pace LT's a custom ypipe made, the banging started,went immediately to the garage and installed the antibanging hanger. It cured it for a little while, now it started banging again!! I took it to the muffler shop and muffler shop to give it more clearance on the driver side, now you can slide your whole hand(on the driverside) between the pipe and the floorboard compared to about a fingers length. It didn't cure it cause now it only bangs when I get on it!!!!! and that **** is driving me frikin crazy *** hell!!

SS4Luck

iTrader: (10)

I'll take them off your hands for ya!

DANSBIRD

iTrader: (2)

I am having a hard time understanding how the motor mounts are going to keep the pipes from banging. The exhaust is sitting up too high and is touching the floor. If anything, the mounts need to sag some to keep it off the bottom of the car.

wildta

iTrader: (1)

If you take an old spring, when you upgrade the valvetrain, weld it in between exhaust and frame. Stops it from banging.

ChocoTaco369

this is a good lesson in redneck automotive mechanics right here. it's cheap, jury rigged and redneck, but it gets the job done and it's not like anyone will see it. not a bad idea. you can try it if all else fails.

jimmypop13

iTrader: (17)

to keep the i-pipe from hitting, try to pull the gmmg apart a little where the pipes meet over the axle and tighten the clamp back down. Also, check the rubber in the exhaust hangers. It could be worn, causing the catback to sit to low and that could cause the pipe to hit the axle.

As for the y-pipe, get some poly motor mounts. It will keep the exhaust from moving much when you are driving. Also, if the y-pipe is hitting under your seat and the mufflex hanger doesn't work, the heater hose method is cheap and proven. You just need hose, exhaust wrap, and some clamps. Here's a pic:

-Chris