In many cases with a hydrolic roller cams you can use solid roller lifters if you want. I have several engines with many hours on them and they are much cheaper. You just tighten the lash a bit like .010 on the int. and exh. I learned this from More Power Racing many years ago, just north of Grand Rapids, MI.

I will sell you two sets for half of that with 300hrs..and they look great too:drink:

When I bought my boat many years ago More Power did this to my engines with about 100 hours on them 32 broken valve springs in both motors. I wouldn't do it. Just my $.02

Mark

Wow Mark,
That's the first I have heard of any problems. Sounds like there was a coil bind issue or something. What did you do to solve the problem. I appreciate hearing your problem though as it will not go ignored for future builds. Did they do the complete engines? Also what did they do or say about the problem.
John

Put the old one's on e-bay.

When I replaced mine in my HP500's
a few years ago, I put them on e-bay,
stated the hours, the application,
ended up selling both sets for $ 400

They didn't appear to have anything
wrong with them either, it's just that
I went through the process of having
one come apart a few years before
this, and didn't want to risk it again.

The owner before me had the motors buit it looked like a complete refresh of the heads, bearing rings etc. looking at his build sheets.
I had my local builder put in Hydraulic rollers and replaced all the springs new bearings etc because all the metal that went through the motor. We check for coil bind and found none. My guy said said it was possibly harmonics

Mark