Originally Posted by promodlightning

Thanks, guys. Dave Crower will not cover my damage. He basically told me to screw off and just wants me to send him the springs, so he can check them personally. The cams were 612 lift intake & exhaust with the SSS solid lifter setup. I was told by 2 engine builders that the spring broke first and by another builder that the valve floated causing the piston to hit the intake valve and jamming it into the exhaust, thus shearing that off too and pounding both broken off valves into the head. The rest of the motor is perfect. I just need 1 sleeve and piston. The head and block are being fixed and should be done friday. The only hold up is valve springs. Builder says , I need about a 150# spring. No one makes it. Motor made excellent power with this combo so Im keeping this combo the same.

Originally Posted by Ricki F-150

I thought you would say that, I would keep the spring and have it checked independantly first.
Lucky with the rest of the motor, can the head be repaired then cos it looks a bit battered in the photo.
What RPM - Speed where you doing?

All that work again is a real kick in the goolies.

BTW what did the motor make on dyno before the failure?

Originally Posted by promodlightning

Thanks, guys. Dave Crower will not cover my damage. He basically told me to screw off and just wants me to send him the springs, so he can check them personally. The cams were 612 lift intake & exhaust with the SSS solid lifter setup. I was told by 2 engine builders that the spring broke first and by another builder that the valve floated causing the piston to hit the intake valve and jamming it into the exhaust, thus shearing that off too and pounding both broken off valves into the head. The rest of the motor is perfect. I just need 1 sleeve and piston. The head and block are being fixed and should be done friday. The only hold up is valve springs. Builder says , I need about a 150# spring. No one makes it. Motor made excellent power with this combo so Im keeping this combo the same.

Originally Posted by lurker

If you found a physically broken spring then that would be the cause of your problems. Valve float could cause the valve head to be broken off but generally you'd see some evidence in other cylinders and I've never heard of a piston/valve crash causing a broken valve spring.

I'm assuming the builder who suggested float is the same one doing the work and recommending #150 springs?

Originally Posted by Bad as L

I don't know how many times I have to say this.....If you move the keepers up on the valve stem and cut the spring pocket....you can put an LS-1 spring in there and it will take all the lift you want to throw at it.

Do those idiots at SSS really think there rocker is going to take 150# seat pressure ?? Well maybe they are on revision 8 or something. I only had revision 2 of 3.
Dale

Originally Posted by MISTERgadget

Pete, who's the builder you're using? just out of curiosity...

Originally Posted by BigBobsL

If you are using the CP 5.4 specific pistons that provide squish/quench area, they require valve reliefs to be added to the piston to prevent valve contact in the flat area bordering the dish.

Originally Posted by Rob_02Lightning

HOLY HOLE BATMAN
That sucks Pro Mod Sorry....


What pressure WERE those springs to begin with ??? 75 Lb ???
I currently have 105's in mine but will switch to 120's shortly
If it helps you, Jim of JDM has 120's being made "right now" (may have some already) and they'll fit with no modifications


So sorry Bro....

Originally Posted by promodlightning

Dale, SSS has a set of 185# titaniums on thier 32 valve, and Bill said , no problems at all. About the revision, I also sheared the tips of the rockers off, so Ill be getting the new revisions now.