I think I found the source of my exhaust rattle
#1
I think I found the source of my exhaust rattle
Ok, so my mechanic put in my cattman headers a couple weeks ago, and I've been hearing a rattle when I get on the throttle. When in neutral revving it, I can hear it just as I push the gas pedal in quickly, then again just as I let off the gas pedal. I hear it also when moving when I'm on the throttle at lower rpms, but not all the time. All the bolts were tightened on the install, and I'm going again tomorrow for a check-up. However, I did notice that on the front header, that the gasket is kinda loose. There's a little space between the gasket and the head/header, and I can actually move the gasket back and forth with a screwdriver. It's not supposed to be that loose is it?
![](http://c4.ac-images.myspacecdn.com/images02/15/l_95c266b2118c48518a934fba86bf649f.jpg)
I was playing with the gasket before we put the headers on, and the sound I hear is very similar to the sound that gasket might be making when hitting metal. If the bolts are tight and that space is still there, what can we do? When this other guy put my y-pipe on my 01 max, he used some kind of light grey gunk that he put between all the connections to take care of any exhaust leaks... anybody ever heard of this stuff, or would it fix my problem? Thanx.
-Chris
![](http://c4.ac-images.myspacecdn.com/images02/15/l_95c266b2118c48518a934fba86bf649f.jpg)
I was playing with the gasket before we put the headers on, and the sound I hear is very similar to the sound that gasket might be making when hitting metal. If the bolts are tight and that space is still there, what can we do? When this other guy put my y-pipe on my 01 max, he used some kind of light grey gunk that he put between all the connections to take care of any exhaust leaks... anybody ever heard of this stuff, or would it fix my problem? Thanx.
-Chris
Last edited by wyche89; 10-04-2008 at 03:07 PM.
#4
That's normal, what you're looking at is the sheetmetal (gasket) between the actual ports. This part of the gasket isn't sealing anything, just the area inside the 4 bolt pattern that is raised to the shape of the port is where the sealing is happening.
Do you have any leaks @ the ypipe /manifold mating surface? Is it a heavy or light metallic noise? Jack up the car and have a partner kick his foot on the brakes and give it gas in "D" and "R", while you look for the source....
Do you have any leaks @ the ypipe /manifold mating surface? Is it a heavy or light metallic noise? Jack up the car and have a partner kick his foot on the brakes and give it gas in "D" and "R", while you look for the source....
#5
That's normal, what you're looking at is the sheetmetal (gasket) between the actual ports. This part of the gasket isn't sealing anything, just the area inside the 4 bolt pattern that is raised to the shape of the port is where the sealing is happening.
Do you have any leaks @ the ypipe /manifold mating surface? Is it a heavy or light metallic noise? Jack up the car and have a partner kick his foot on the brakes and give it gas in "D" and "R", while you look for the source....
Do you have any leaks @ the ypipe /manifold mating surface? Is it a heavy or light metallic noise? Jack up the car and have a partner kick his foot on the brakes and give it gas in "D" and "R", while you look for the source....
#6
It's something small hitting it or maybe the engine mounts are worn...What kinda exhaust hangar supports are you using? You sure your exhaust hangar mount are up for the task? I bought Nismo and NAPA brand exhaust hangars, and the NAPA are just as good as the more expensive NISMO's.
#7
It's something small hitting it or maybe the engine mounts are worn...What kinda exhaust hangar supports are you using? You sure your exhaust hangar mount are up for the task? I bought Nismo and NAPA brand exhaust hangars, and the NAPA are just as good as the more expensive NISMO's.
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