Headers off/Stock exhaust back on!!!
Thread Starter
Safety Car
Joined: Apr 2010
Posts: 4,231
Likes: 451
From: Maryland
Headers off/Stock exhaust back on!!!
I removed those cheap Mirage (Chinese) headers that I had so much trouble with.
I have been hearing a valve/lifter tap for a while now but thinking that some of these LS3's make that kind of noise from some of the posts I have read.
Well, it turns out that after a year or two the headers developed a crack in one of the tubes which we all know can give that tap type of sound.
I just made the crack repair and Monday I am going to have them coated. Being this is the only thing that has gone wrong after a year or so of easy driving
I think the headers will now be trouble free and the coating will kept the heat down in the engine compartment and maybe add some extra horsepower.
Question: does anyone have any specs as to any hp improvements from header coatings? Thanks
I have been hearing a valve/lifter tap for a while now but thinking that some of these LS3's make that kind of noise from some of the posts I have read.
Well, it turns out that after a year or two the headers developed a crack in one of the tubes which we all know can give that tap type of sound.
I just made the crack repair and Monday I am going to have them coated. Being this is the only thing that has gone wrong after a year or so of easy driving
I think the headers will now be trouble free and the coating will kept the heat down in the engine compartment and maybe add some extra horsepower.Question: does anyone have any specs as to any hp improvements from header coatings? Thanks
Last edited by C7/Z06 Man; Feb 10, 2013 at 12:49 PM.
Melting Slicks
Joined: Apr 2007
Posts: 2,987
Likes: 16
From: Phoenix
Cheap materials crack. Welcome to Chinese headers. They will eventually do it again. Header coating is more for keeping your underhood temps down. That's about it. I think it's a waste. I just run uncoated stainless headers.
Thread Starter
Safety Car
Joined: Apr 2010
Posts: 4,231
Likes: 451
From: Maryland
http://forums.corvetteforum.com/c6-t...-american.html
Last edited by C7/Z06 Man; Feb 10, 2013 at 01:24 PM.
Thread Starter
Safety Car
Joined: Apr 2010
Posts: 4,231
Likes: 451
From: Maryland
Just got back from my first drive now that it's all back to stock except for the modified OEM cai. I drove approx 60 miles. I thought the car sounded quiet with the headers and stock mufflers but with the exhaust completely back to stock it's as quiet as a tomb, hell I thought am I in a real nice Buick or a big Cadillac.
I think I will live with this sound chamber for awhile. I'm going to take a break from wrenching and enjoy the sound of silence; until it warms up and the tracks open.
I think I will live with this sound chamber for awhile. I'm going to take a break from wrenching and enjoy the sound of silence; until it warms up and the tracks open.
Racer
Joined: Oct 2008
Posts: 415
Likes: 5
From: Owensboro Ky
St. Jude Donor '11
Did you change the tune back? You fixed those up really nice. I remember following your thread. That sucks that they cracked. I'm not sure if you'll get any gains from coating them or not? If I guessed, I'd say not.
Thread Starter
Safety Car
Joined: Apr 2010
Posts: 4,231
Likes: 451
From: Maryland
PS: I can tell that the car has lost some of it's bad manners
without the tune and headers. Oh, the 91 and 93 octane tune in my car are pretty damn close at the track too. 
Last edited by C7/Z06 Man; Feb 11, 2013 at 12:43 AM.
