*sigh another broken valve spring
Thread Starter
Pro
Joined: Jan 2009
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*sigh another broken valve spring
02' Z06, with 90k miles. I was leaving a red light and it gave out at around 30 mph. I felt a huge loss in power and heard a tapping noise from the motor so I shut the engine off and coasted to a parking lot. I took off the valve covers and this is what I found:
What should I do next?
What should I do next?
Thread Starter
Pro
Joined: Jan 2009
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Le Mans Master
Joined: Sep 2007
Posts: 7,604
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From: Belleville Il
I would go the whole set route as well!! I'd post this in the tech/performance section,,and get recommendations as to brands. I read performance,,but only have heard of ones like Comp Cams beehive springs,,but I know there are others that are highly regarded!! Do them all and get some peace of mind!!
Safety Car
Joined: May 2004
Posts: 4,628
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From: Madison Wi
It looks like the end of the valve is no longer in the center of the spring.
I'd assume the valve went into the cylinder bore and interfered with the piston. Until you get the head off you won't know how ugly it got.
Cross your fingers, hopefully the damage is minimal.
I'd assume the valve went into the cylinder bore and interfered with the piston. Until you get the head off you won't know how ugly it got.
Cross your fingers, hopefully the damage is minimal.
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Thread Starter
Pro
Joined: Jan 2009
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The end of the valve is about halfway down the center of the collapsed spring. I guess I need a compression test huh?
Safety Car
Joined: May 2004
Posts: 4,628
Likes: 397
From: Madison Wi
Just pull the cylinder heads and assess the damage. See if the cylinder wall is damaged, and inspect the top of the piston for damage. At a bare minimum you'll need to have a shop check the head out before installing a new valve and new valve springs all around.
EDIT---
If you put a long nose plyers on the end of the valve can you pull it closed? If so, maybe a compression test is a good idea...
Last edited by TraceZ; Aug 30, 2010 at 01:37 PM.
Melting Slicks
Joined: Jun 2007
Posts: 2,172
Likes: 1
From: Sartell Minnesota
I've got duals in mine, far less likely that that will happen. Sucks dude. From the pick it looks like the spring is off center from the break and not the pushrod. I'd definatly check it all out before you put it back together
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Drifting
Joined: Sep 1999
Posts: 1,574
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From: Orlando FL
OK so if I were going to replace mine which is better? I know this is an opinion question that has been addressed several times before but the search function is much help.
I see a pretty good price difference from:
PAC 1518 for $356.00
Comp 918 for $169.00
Yellow GM LS6 replacement springs for $79.00
Any constructive feedback on these three options?
I'm planning on swapping them myself. I have never tried but it doesn't look all that hard.
Thanks for the input
Tom
I see a pretty good price difference from:
PAC 1518 for $356.00
Comp 918 for $169.00
Yellow GM LS6 replacement springs for $79.00
Any constructive feedback on these three options?
I'm planning on swapping them myself. I have never tried but it doesn't look all that hard.
Thanks for the input
Tom
