[eschaider]

Tim,

Depending on how frequently you maintain valve lash and how zippy your cam ramps are, solid rollers can have average to poor life cycles. Moderate cam opening ramps. good lash maintenance, and responsible engine operating practices should provide you with reasonably good lifter life.

All that said mechanical rollers are not as reliable as hydraulic rollers. If you are not using the mechanical roller to allow the use of fast opening ramp cams, it begs the question why are you using them at all, instead of their more reliable hydraulic cousins. The obvious answer might be your block does not provide oiling for hydraulics. If that is not the case you would be better off with hydraulic rollers.

Driving the car to promote mechanical roller life is fundamentally the same as the way you would drive the car with hydraulic rollers — so why are we making life more difficult that it already is by choosing the less reliable mechanical rollers instead of the more reliable hydraulic rollers?


Ed