Moded Z06, need help on broken valve spring.
Thread Starter
Melting Slicks
Joined: Jul 2004
Posts: 2,295
Likes: 14
From: Grand Sport #82
Moded Z06, need help on broken valve spring.
I am helping a friend with this 2002 C5 Z06.
The car was running really BAD, and I found the problem to be a broken valve spring.
I ordered some new stock valve springs, but then realize that this car has been modified, so these springs does not fit.
The owner has very limited knowledge about the cars mods, but we have the following information.
Stage 3 heads CNC LS6
Cam 228/232 with 587 lift
Manley valves
Titanium retainers
Roller Rockers arms 1.7
X-pipe
Hooker headers
I measured the springs (out of the car) outer diameter is 32mm and height is 53mm.
I dont know what brand and part. No these are.
Below is the valves from Cyl #3
Can anybody tell me what valve springs to order for this car?
The car was running really BAD, and I found the problem to be a broken valve spring.
I ordered some new stock valve springs, but then realize that this car has been modified, so these springs does not fit.
The owner has very limited knowledge about the cars mods, but we have the following information.
Stage 3 heads CNC LS6
Cam 228/232 with 587 lift
Manley valves
Titanium retainers
Roller Rockers arms 1.7
X-pipe
Hooker headers
I measured the springs (out of the car) outer diameter is 32mm and height is 53mm.
I dont know what brand and part. No these are.
Below is the valves from Cyl #3
Can anybody tell me what valve springs to order for this car?
Last edited by Lars87; Jun 15, 2011 at 11:47 AM.
Racer
Joined: Jan 2006
Posts: 273
Likes: 0
From: Ithaca Michigan
If it were me I would buy a set of Comp 918s and Ti retainers, swap them and forget about em'. I have run 918s and 921s with mondo cams to the moon and never had any troubles. GOOD parts, very reasonably priced and they fit most any LS application so there's no Corvette tax. Good luck.
Thread Starter
Melting Slicks
Joined: Jul 2004
Posts: 2,295
Likes: 14
From: Grand Sport #82
If it were me I would buy a set of Comp 918s and Ti retainers, swap them and forget about em'. I have run 918s and 921s with mondo cams to the moon and never had any troubles. GOOD parts, very reasonably priced and they fit most any LS application so there's no Corvette tax. Good luck.
Burning Brakes
Joined: Apr 2010
Posts: 753
Likes: 0
From: Spring Hill TN
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
I'm trying to figure out what you have. The springs appear to be beehive springs but the retainers look like they are from dual springs. That, if true, may be why you have a broken spring. Any part numbers evident? Do you know the prior owner who modded the car?
Thread Starter
Melting Slicks
Joined: Jul 2004
Posts: 2,295
Likes: 14
From: Grand Sport #82
It is very likely that the reitainer is ment for dual springs, as the owner claimed there to be dial springs in the car. However its pretty evident that the springs are normal valvesprings.
I dont have contact to the previus owner, unfortunatly.
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Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Any idea who might have machined the heads? That might provide a lead on the springs. You could also measure out the retainer and then check Comp, Crane, PAC and Manley for retainer dimensions. If you can identify the retainer then you can figure out what springs can be installed.
