Roller cam and FE engine

[Excaliber]

Schubeck Lifters, WOW, just did a Google thing and I am really impressed!!! Not only with their flat tappets but their unique roller tappets with NO ROLLER BEARINGS. Roller bearings in roller lifters are the fundamental problem.

Consider this from a write up on their flat tappets:

The Radius lifters are esentially a modified flat lifter and are based on the fact that, increasing the useable working face of flat lifter to utilize a faster acting and higher lift cam, will increase the engines performance. This increase in useable surface is achieved, without increasing the diameter,by arcing the flat surface into a radius. The results approach the performance achieved with a roller cam.
My my, I bet those babies cost a small fortune (and sound worth it too)! I'm checking it out for my next engine build, I might even consider solid rollers again! Thanks for the heads up Steve.

[RICK LAKE]

Bunkie314 Yes there are some people who drive very normal. You are right about a once a year check for lash on the valve train. Motors the at run hard bounced off MSD limiters,road raced and autocrossed, they need more maintainance and adjustment. Your cam is not that big. Now if you where running something in the .700" class and an Alum block and heads,you need to be checking. Pushrods geometery is a problem with the FE manifolds. There is alot of movement on the FE manifold. No pins or locators to make sure that the manifold is centered. I spend 2 hours grinding on my manifold for clearance of the pushrods. I do think that adding a .010 oil groove in the lifter bore to leak down to the contact point of the cam and lifter would not hurt. Scrapers and windage trays cut down on oil spray in the bottom of the motor. This could be another reason for failures in motors. Are you running a HV-HP oil pump in your motor? What pressures, hot and cold? Rick L.