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Cliff your thoughts on roller rockers?

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Cliff Ruggles:
Also keep in mind that there are a LOT of products available and in use out there that don't make the grade.  Roller rockers is one of the WORST places to spend money in search of more power and reliability in long term service.  You add more places to wear out, like a pin with a roller on it, and they are drilled and pressed fit into the end of the rockers weakening them in that area.  If you go with full roller rockers you add needle bearings and we've seen enough of those get ground up to avoid any of the "low" end imported rockers altogether.

If you don't think aluminum roller rockers have potential trouble areas take a look at the cracked Scorpion roller rockers above.  It was installed in an engine here about 15 years ago.  They only lasted about 4 seasons of racing so had very little actual time or "cycles" on them.  They were sold to my customer (I was hired to assemble and dyno his engine) as a "package" with a roller cam, springs, and heavy retainers with 10 degree locks......

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