Valve noise after new headers/exhaust
#1
Thread Starter
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Joined: Aug 2001
Posts: 311
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From: Saint Louis, MO, USA
Car: 91 Formula
Engine: 305 TBI
Transmission: 700R4
Valve noise after new headers/exhaust
After I intstalled headers, a new y pipe, a new cat, and a hooker catback this weekend, I noticed louder valve noise coming from under the valve covers.
I know this is kinda stupid to post w/o before and after sound clips (don't have em) or something, but could someone give me advice on what is a normal increase in valve sound post-headers and what could indicate some sort of a problem?
(Oil level is normal, I only removed the driver's valve cover during install). Thanks.
I know this is kinda stupid to post w/o before and after sound clips (don't have em) or something, but could someone give me advice on what is a normal increase in valve sound post-headers and what could indicate some sort of a problem?
(Oil level is normal, I only removed the driver's valve cover during install). Thanks.
#2
you probbally have an exhuast leak that sounds like a valve tick. I would get a peice of vacuum hose and stick it in your ear and move it over the header pipes to try and locate which one it is.
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69 Chevelle 2dr hardtop blue, bench seats, 12 bolt w/3.73's muncie 4 speed. TBI w/custom harness and prom best 14.5@90
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69 Chevelle 2dr hardtop blue, bench seats, 12 bolt w/3.73's muncie 4 speed. TBI w/custom harness and prom best 14.5@90
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#8
After I installed my Edelbrock Headers I heard the same thing. It is either the header gasket leaking of just the noise we are going to have to put up with like someone suggested. First I would double check all the other connections of the new exhaust components you installed to make sure there isn't another leak. It would be a shame to yank those headers out to change gaskets and it wasn't really them! I was extremely careful when I torqued down the header so I wouldn't have exhaust leak and I still hear the same noise you do so trust me when I say you are not alone in your frustration! If you do find what it is please let me know because after a while it really starts to get annoying!
Thanks!
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1991 Chevy Camaro RS TBI w/auto
Mods:
Edelbrock TES Headers, REALLY high flow cat, 2 1/2 in catback flowmaster, 160 stat, hypertech chip, MSD ignition (rotor, cap, superconduct. wires), Bosch quad4 plugs, Edelbrock TBI Intake, Ram Air Box's twin snorkel, all TBI mods, no smog stuff, no EGR, lots of suspention and alignment upgrades.
Fastest e.t.:
15.28 @ 89.42mph
Fastest 60 foot:
2.113
Thanks!
------------------
1991 Chevy Camaro RS TBI w/auto
Mods:
Edelbrock TES Headers, REALLY high flow cat, 2 1/2 in catback flowmaster, 160 stat, hypertech chip, MSD ignition (rotor, cap, superconduct. wires), Bosch quad4 plugs, Edelbrock TBI Intake, Ram Air Box's twin snorkel, all TBI mods, no smog stuff, no EGR, lots of suspention and alignment upgrades.
Fastest e.t.:
15.28 @ 89.42mph
Fastest 60 foot:
2.113
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