Broke 3 valve springs....Solid Roller
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Joined: May 2000
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From: Peachtree City, GA
Re: Broke 3 valve springs....Solid Roller
Talked to the gentleman at Lazer Cams, he said that the 999 spring is a poor choice for street motors. It is very brittle and cracks easily. What most likely happened was the engine was not up to operating temperature and was revved to high. He recommended some of Lazer Cams spring that would be perfect for me.
Marcin
Marcin
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Joined: Oct 2002
Posts: 2,931
From: Upstate NY
Re: Broke 3 valve springs....Solid Roller
Originally Posted by xxsaint69x
Talked to the gentleman at Lazer Cams, he said that the 999 spring is a poor choice for street motors. It is very brittle and cracks easily. What most likely happened was the engine was not up to operating temperature and was revved to high. He recommended some of Lazer Cams spring that would be perfect for me. Marcin
I'm not sure that "It is very brittle and cracks easily" is the correct analysis for H-11 springs that cost as much as 999s. H-11 (Vasco-Jet) tool steel is used on very high performance very high-rpm endurance spring which you shouldn't even be warming up at 6800. Of course I'm also not surprised they have the "perfect" spring. 999s run well over $300 a set. The new ones should be a lot less.
FWIW, Lazer has a 999 also. Coincidently it's also H-11 material. What spring number did the Cam Wizard recommend?
http://www.lazercams.com/
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Joined: Nov 2001
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From: In a house by the bay
Re: Broke 3 valve springs....Solid Roller
Originally Posted by OldSStroker
The Comp 999 is a 1.55 OD H-11 dual spring assy. Installed at 1.90 it has 196 lbs. and a recommended max lift of .700. Coil bind is 1.09 or .81 from the recommended installed height. Don't think coil bind is the problem here unless they are installed with about 300 lbs of seat load.
The 999s are a little more expensive than the 943 PacAlloys, so we're not talking chump change cheapies. That seems like a lot of spring ($ wise) for a 6800 rpm SR.
I'm not the cam guy, so it's just my opinion. I'd look elsewhere for bad harmonics, etc.but first I'd ask the cam manufacturer for a spring recommendation. If it was the 999's I'd ask them more questions about my failure.
My $.02
My $.02
My $2
-Mindgame
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Joined: Oct 2002
Posts: 2,931
From: Upstate NY
Re: Broke 3 valve springs....Solid Roller
Originally Posted by Mindgame
I know you keep a Comp catalog in the bathroom OS. Committed it to memory yet?
I'm gonna go out on a limb here and just say it.... someone speced the springs on their own... without asking for a reccomendation.
My $2
-Mindgame
My $2
-Mindgame
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