[Z06] Valve Spring Issues

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May 4, 2012 | 08:50 AM

#21

pluslt

Pro

Joined: Apr 2009

Posts: 734

Likes: 2

From: Mt. Airy MD

Quote:

Originally Posted by slikrider20

Thanks for the info man, i really appreciate it. It sounds like its not going to be as expensive after all. That guy said he was only charged 220 for labor. And i found the springs for 67$ shipped on GM Parts direct, that's the cheapest i've seen so far. Not too bad at all. You're talking 300$ for the springs and labor if you can find a decent deal.

Also, i assume with the GM springs you wouldn't need to swap out the seals or the seats or anything?

I think a lot of folks go ahead and tackle that since they're in there already. Probably good PM. I dind't do mine when the springs were done but I did replace the stock rockers which have needle bearings with some rebuilt trunion ones from Harland Sharp.

Good luck in your search.

May 4, 2012 | 12:12 PM

#22

Evil Oil Apologist

Racer

Joined: Aug 2010

Posts: 469

Likes: 1

From: Heath Texas

Ya know, when you're that far into the motor............it's just a few more steps to upgrade the cam. Just say'n.

It's only money.

May 4, 2012 | 12:16 PM

#23

skyavonee

Melting Slicks

Joined: Jul 2010

Posts: 3,355

Likes: 113

From: Los Angeles

Quote:

Originally Posted by Evil Oil Apologist

Ya know, when you're that far into the motor............it's just a few more steps to upgrade the cam. Just say'n.

It's only money.

I think most people would agree that dropping the steering rack and opening up the motor is significantly more involved than removing the valve covers.

May 4, 2012 | 06:43 PM

#24

Trash

Racer

Joined: Apr 2010

Posts: 389

Likes: 25

Quote:

Also, i assume with the GM springs you wouldn't need to swap out the seals or the seats or anything?

That's correct, you would not need to put in new seals. I didn't. Its a personal choice. I left the rockers bone stock etc. and only changed the springs, plugs and plug wires.

If and when you tackle this project look at the previous write ups for tips.

May 4, 2012 | 08:22 PM

#25

cor28vettes

Race Director

Joined: Sep 2006

Posts: 11,214

Likes: 1,140

From: Santa Rosa Beach FL

Quote:

Originally Posted by slikrider20

In about 2 months, i will be looking to purchase my first Corvette, and a Z06 at that. I've done a lot of lurking on here and have seen in a few threads how the 02's and some 03's have had valve spring failures, even with low mileage on stock engines. Some people have been lucky and it has happened at idle, not causing much damage. But i've also read of some people having the valve drop into the cylinder causing significant damage.

I've searched and found alot of threads on this, but no REAL answers as to when/why this has happened. I've been saving up for quite awhile and don't want to chuck out 20k on a car for the motor to blow up a month later.

Anyone have any insight on this?

There's a few 'million' threads on Z06 alone. Just do advance search on all 3. C5 discussion, Z06, & Tech.
This is just one out of the litter...
http://forums.corvetteforum.com/show....php?t=2780048

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