[Z06] 04 Z06 differences
Burning Brakes
Joined: Oct 2003
Posts: 972
Likes: 0
From: Birmingham Alabama
I have the rattle you mention. Mine seems to come from "inside" the pipes too. Mostly during decel, or during reving. Someone mentioned it might be the sound of the rocker rollers amplified thru the exhaust. I've had the car up and couldn't replicate the sound by shaking the exhaust system, so it seems to be something other than a loose fitting somewhere. anyone else have a guess?
Burning Brakes
Joined: Oct 2004
Posts: 1,001
Likes: 0
From: Naples Florida
Originally Posted by SpiralCoupe
I have the rattle you mention. Mine seems to come from "inside" the pipes too. Mostly during decel, or during reving. Someone mentioned it might be the sound of the rocker rollers amplified thru the exhaust. I've had the car up and couldn't replicate the sound by shaking the exhaust system, so it seems to be something other than a loose fitting somewhere. anyone else have a guess?
Burning Brakes
Joined: Oct 2003
Posts: 972
Likes: 0
From: Birmingham Alabama
Originally Posted by rudyarias
You will probably need to use a Stethoscope while it is running to pin point the orign of the rattle. I was fortunate to have a good friend who owns a dyno shop. We checked with a Stethoscope while it was on the dyno and narrowed it down to number 7 cylinder.
Burning Brakes
Joined: Oct 2004
Posts: 1,001
Likes: 0
From: Naples Florida
Originally Posted by SpiralCoupe
What was causing the rattle and what did you do to fix it???
Have checked you exhaust gaskets? If they're good, it could be the valve train making noise. Depending on how loud it is, a dealer may tell you that it is normal.
Thread Starter
Instructor
Joined: Dec 2004
Posts: 133
Likes: 3
From: Alvin Texas
The GM Vette mechanic looked at my car for quite a few minutes on the lift while I rev'ed the engine slightly off idle. He ordered a new exhaust so we'll find out soon. I'm not sure if he used a stethoscope or not I didn't ask, but he checked it pretty thoroughly it seemed.
Burning Brakes
Joined: Oct 2003
Posts: 972
Likes: 0
From: Birmingham Alabama
Originally Posted by LS1Bird
The GM Vette mechanic looked at my car for quite a few minutes on the lift while I rev'ed the engine slightly off idle. He ordered a new exhaust so we'll find out soon. I'm not sure if he used a stethoscope or not I didn't ask, but he checked it pretty thoroughly it seemed.
Thanks
