Exhaust leak/Valvetrain noise?
Thread Starter
Staging Lane
Joined: Mar 2017
Posts: 62
Likes: 5
Exhaust leak/Valvetrain noise? Trying to identify a noise that I suspect is an exhaust leak but also seems like could be top end related. At idle when the car is warm I can only hear it from under the car, but it sounds like it is in front of the header on the drivers side. At first I felt a small leak by the collector, but I cant imagine it's enough to make the noise that it is. Speed engineering 1 3/4 headers and Y pipe, installed about a year ago, and the noise is relatively new. Don't remember it happening before this season. I'm considering replacing the small band clamps with Jegs lap joint clamps at all the slip unions. Any idea what the issue is would be greatly appreciated. The video linked is a clip of the sound.
Thread Starter
Staging Lane
Joined: Mar 2017
Posts: 62
Likes: 5
Trying to identify a noise that I suspect is an exhaust leak but also seems like could be top end related. At idle when the car is warm I can only hear it from under the car, but it sounds like it is in front of the header on the drivers side. At first I felt a small leak by the collector, but I cant imagine it's enough to make the noise that it is. Speed engineering 1 3/4 headers and Y pipe, installed about a year ago, and the noise is relatively new. Don't remember it happening before this season. I'm considering replacing the small band clamps with Jegs lap joint clamps at all the slip unions. Any idea what the issue is would be greatly appreciated. The video linked is a clip of the sound. https://youtu.be/eUGfCsK5zdo
TECH Regular
Joined: Jun 2021
Posts: 497
Likes: 148
From: Shlumpt, TX
Damn that is loud! Did yours get louder getting in the freeway right after a cold start? That's how mine is on my Silverado. I have the gaskets just waiting on the headers to replace my exhaust manifolds....
Thread Starter
Staging Lane
Joined: Mar 2017
Posts: 62
Likes: 5
TECH Regular
Joined: Jun 2021
Posts: 497
Likes: 148
From: Shlumpt, TX
Yeah that is what I think too. I have left this exhaust leak for like 2 months now and won't be doing it for another month. God damn am I lazy ROFL
I could always swap gaskets but I got a cam and some low tier heads so might as well slap some headers and call it a day
I could always swap gaskets but I got a cam and some low tier heads so might as well slap some headers and call it a day
Thread Starter
Staging Lane
Joined: Mar 2017
Posts: 62
Likes: 5
I'd probably wait for the headers too if I was you. I was becoming concerned something in the top end of my car was about to let loose because it kept getting louder as the gasket was getting worse. Thankfully its not a hard fix, just one of those time consuming jobs -- especially when you find out 2 of your spark plugs are cross threaded during reassembly.
