Now what can it be?????
Thread Starter
Instructor
Joined: May 2010
Posts: 107
Likes: 0
From: Dayton Nevada
Now what can it be?????
I narrowed my ticking noise down to the #8 cylinder. I could tighten the rocker on exhaust side a 1/2 turn and it would stop ticking for 2 seconds then come back. It will do that everytime I tighten it. So I swapped the valve spring, rocker arm, nut from the intake side to exhaust side and it still does it, but now I noticed that both the exhaust and intake will stop the ticking for 2 seconds if either one are tightened a 1/2 turn, but will come back again. So now what can it be??? The cam and lifters are brand new and it is doing it just on that cylinder.
Race Director
Joined: Jan 2000
Posts: 13,018
Likes: 2,262
From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
C2 of Year Winner (performance mods) 2019
2017 C2 of Year Finalist
Are these stock pressed in studs? Just for fun....look real close at the heights of them...maybe lay a straghtedge on the top and compare to the others.
Stock rockers or did you move to 1.6's?
Guideplates or just factory slots?
Stock cam or hot rod stuff?
Any nicks or wear spots on studs that could be catching on the rocker *****?
JIM
Stock rockers or did you move to 1.6's?
Guideplates or just factory slots?
Stock cam or hot rod stuff?
Any nicks or wear spots on studs that could be catching on the rocker *****?
JIM
Thread Starter
Instructor
Joined: May 2010
Posts: 107
Likes: 0
From: Dayton Nevada
Are these stock pressed in studs? Just for fun....look real close at the heights of them...maybe lay a straghtedge on the top and compare to the others.
Stock rockers or did you move to 1.6's?
Guideplates or just factory slots?
Stock cam or hot rod stuff?
Any nicks or wear spots on studs that could be catching on the rocker *****?
JIM
Stock rockers or did you move to 1.6's?
Guideplates or just factory slots?
Stock cam or hot rod stuff?
Any nicks or wear spots on studs that could be catching on the rocker *****?
JIM
Pro
Joined: Jul 2005
Posts: 517
Likes: 7
From: Peoria IL
I have seen cracked rocker arms do this. They were cracked around the slot, so you have to look close at them to see the crack. You might try moving the rocker arms around to see if the noise moves with the rocker arm. Be sure and keep the ball & arm as matched sets.
Race Director
Joined: Jan 2000
Posts: 13,018
Likes: 2,262
From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
C2 of Year Winner (performance mods) 2019
2017 C2 of Year Finalist
Aftermarket heads or stockers with screw in studs? What I'm going for is if there is any interference/binding in the guideplates/head guide holes that could be binding things up. 1.6 rockers move pushrod closer to valve and it's possible there is something goofy going on there.
Look at bottom of rockers also to be sure they aren't touching retainers.
Pushrods aren't wearing on tips?
Is oil coming up through rocker good?
JIM
Look at bottom of rockers also to be sure they aren't touching retainers.
Pushrods aren't wearing on tips?
Is oil coming up through rocker good?
JIM
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Burning Brakes
Joined: Feb 2002
Posts: 752
Likes: 31
From: Melbourne Australia
Might be a long shot.... but in my case a frustrating ticking noise on #6 turned out to be a badly worn valve guide allowing the vavle to rock in the guide.
Tightening the rocker will probably silence it for a couple of seconds until the lifter "bleeds" down to its natural level.
Good luck!
Joe
Tightening the rocker will probably silence it for a couple of seconds until the lifter "bleeds" down to its natural level.
Good luck!
Joe
Drifting
Joined: Jul 2002
Posts: 1,944
Likes: 20
From: The only Corvettes in Highett Victoria
Might be a long shot.... but in my case a frustrating ticking noise on #6 turned out to be a badly worn valve guide allowing the vavle to rock in the guide.
Tightening the rocker will probably silence it for a couple of seconds until the lifter "bleeds" down to its natural level.
Good luck!
Joe
Tightening the rocker will probably silence it for a couple of seconds until the lifter "bleeds" down to its natural level.
Good luck!
Joe
Where have you been???? Long time no see. It's good to have you back.
Regards from Down Under
aussiejohn