Re: The real poop on 500hp's
 

Might add that Crane did have a Spring problem and were changed to a new Part#. A lot of these motors had them.
Regardless with the roller valve trane it seems that the 200 hour mark is the time to start checking/replacing springs and lifters.

Re: The real poop on 500hp's
 

Kaama,
It is best just to e-mail Bob. If you need his e-mail let me know.

Chris

Re: The real poop on 500hp's
 

Kaama/Mark,
You can email me @
[email protected]
I'm putting together a tech sheet and photos of the Morel lifter package today. They are outstanding pieces and packaged with SCCS springs should make for a bullit-proof valvetrain package.
Bob

Re: The real poop on 500hp's
 

My (new to me) 1999 HP500 carb had 180 hours on it, when I bought it.

I did a top end job on it.

There were two valves spinning, one on each side. No springs were broken.

No leakage between cylinders on the head gasket. It took 4 mils to clean up the surfaces.

The valves, guides, and lifters were perfect, as was everything else viewable with the heads off.

I went back with Comp Cam 929-16's.

Should these be replaced at the next 200 hour interval? I have heard both yes and no. When at 400 hours, I'll likely freshen the whole engine, anyway...
=========
Rmbuilder, would the cam with miles on it need to be changed when changing lifters to the Morel package?
Will that spring package last longer than the 929's?

Thanks,
Kent

Re: The real poop on 500hp's
 

Yea I have heard to use the comp cam spring 929. but its there standard spring not a endurance spring.


Rm how much more are the morel over the cranes??

Re: The real poop on 500hp's
 

Is anybody using Isky 9300 High Endurance 9300 Series spring?
I was wondering how well they hold up compaired to their Tool Room spring.

Re: The real poop on 500hp's
 

You want any valve spring made from Super Clean Vanadium Chrome Silicon. This is the "endurance" material that everyone re-names. Additional process that will increase spring life is electro polishing and Meta-Laxing.

Chris

Re: The real poop on 500hp's
 

Chris, are the same materials and Meta-Laxing you are speaking about in your quote above, in the CSSC springs you were refering to? What does CSSC stand for?

Re: The real poop on 500hp's
 

Kaama,
SCCS is
Super Clean Chrome Silicon I refered to in my post.

Mudball,
It's not necessary to change out the cam, but inspect everything carefully first, then change the lifters and you're good to go.
We have seen less sag and more fatigue resistance in these springs than any other material. Remember, no spring will stand up to surge. When they flash they go red hot and its all over for the spring. Thats why the proper spring is critical.
Strip,
Which Crane # ?

Re: The real poop on 500hp's
 

Meta Lax is a vibrational stress relief. Anyone on here that does high end welding would know. Basicly with frequency waves the part is "shaken" to align the molecules. This great increases longevity of parts including valve springs. Some people do the entire engine.

Chris