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Clack clack clack

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Old 08-28-2017, 10:14 PM
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corvettenutz
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Default Clack clack clack

I finally spoke to the po .He wanted to buy the car back lol He bought a new Raptor because his wife is expecting) and he said the heads were done at american heritage with their #4 package with btr springs and retainers and kept the stock cam/lifters about 6000 miles ago. I hate hearing that tick!! I seem to hear it better when I'm in the car coming to a stop or between shifts when engine is idling down. i hear a clack clack clack not super loud but i hear it.
Old 08-29-2017, 06:34 AM
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corvettenutz
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Car is a 08 zo6
Old 08-29-2017, 10:18 AM
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TXGS507
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Injectors?
Old 08-29-2017, 11:31 AM
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Jaybird29
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Lifters more than likely, but have you taken the valve covers off to check rocker arms?
Old 08-29-2017, 09:50 PM
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Originally Posted by Jaybird29
Lifters more than likely, but have you taken the valve covers off to check rocker arms?
Agreed...easy to do. Pull the covers and make sure everything looks clean and tight. I'd say inspect for lash caps...but at 6,000 miles since the head refresh, a Ti intake valve would've been hammered into a cylinder a long, long time ago.
Old 06-08-2018, 06:49 AM
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corvettenutz
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soo tired of this noisy vt!!! looking at a different car!!
Old 06-08-2018, 07:17 AM
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stefuel
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Is it just one on one side or all of them? If just one it shouldn't be to hard to figure out which side it's on. Pull the cover on that side first and inspect. Not knowing the piston to valve clearance on your setup, this might not be the best advice but if I have one that is noisy, I use a .001 feeler gauge and slide it between the rocker and valve stem while running to find the loose one.
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Old 06-08-2018, 08:17 AM
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Travlee
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almost a year later and still bitching about it... either sell it, or get louder exhaust
Old 06-08-2018, 08:22 AM
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G fix needy
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Unfortunately, fixing the heads doesn't help the lifters/cam, which had to be replaced in my '08 Z06 after 30,000 miles (including ~ 12,000 on track).
Old 06-08-2018, 08:27 PM
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corvettenutz
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Originally Posted by Travlee
almost a year later and still bitching about it... either sell it, or get louder exhaust
yes and no
Old 06-08-2018, 08:29 PM
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Travlee
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I am just messin with ya, after i had my heads done i went back to the shop to make sure nothing was wrong so i get it. Now i just imagine a lady in a sweat shop sewing things when i hear it
Old 06-08-2018, 08:30 PM
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corvettenutz
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im gonna put in my trunnion bushings this weekend. only had them 4 a year! whats everybody think about thick wall pushrods? I read somewhere that the pr flex may be some of the noise??
Old 06-08-2018, 08:34 PM
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corvettenutz
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Originally Posted by Travlee
I am just messin with ya, after i had my heads done i went back to the shop to make sure nothing was wrong so i get it. Now i just imagine a lady in a sweat shop sewing things when i hear it
LOL I know sometimes im beered up and forget what i already posted. im **** about vt noise. i have a 72 monte carlo that i bracket race and bought morel link bars and they are dead silent. i just dont want work on the vette . but the noise is getting to me BIGTIME.

Last edited by corvettenutz; 06-08-2018 at 08:35 PM.
Old 06-08-2018, 08:37 PM
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corvettenutz
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Originally Posted by stefuel
Is it just one on one side or all of them? If just one it shouldn't be to hard to figure out which side it's on. Pull the cover on that side first and inspect. Not knowing the piston to valve clearance on your setup, this might not be the best advice but if I have one that is noisy, I use a .001 feeler gauge and slide it between the rocker and valve stem while running to find the loose one.
sounds like pass. side at 1500-2200 rpm when loudest
Old 06-08-2018, 09:50 PM
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Millenium Z06
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Originally Posted by corvettenutz
im gonna put in my trunnion bushings this weekend. only had them 4 a year! whats everybody think about thick wall pushrods? I read somewhere that the pr flex may be some of the noise??
Pushrods aren't going to cause any noise unless they're too short, most likely what you have is a bad lifter
Old 06-08-2018, 09:55 PM
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JesC6Z
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Originally Posted by corvettenutz
sounds like pass. side at 1500-2200 rpm when loudest
post up a video. That rpm range is notorious for many complaints that I’ve researched. Not to knock on the member Mill but a bad lifter in my opinion with all due respect is noticeable at idle and higher rpm. I had a delayed lifter not load up with oil upon start up and it was extremely evident. ESP above 2500. Very noisy. A video will help

Last edited by JesC6Z; 06-08-2018 at 09:56 PM.
Old 06-08-2018, 10:19 PM
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Dirty Howie
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VIDEO !!!


DH

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Old 06-09-2018, 10:54 PM
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Apocolipse
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CHE bushings instead of stock trunnions
Old 06-10-2018, 09:45 AM
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jayyyw
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trunnion bushings won't do anything for noise.
Old 06-10-2018, 12:29 PM
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corvettenutz
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Originally Posted by jayyyw
trunnion bushings won't do anything for noise.
i hear conflicting results. thanks for your all knowing wisdom.



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