Quote:
Originally Posted by Excaliber
Engine builders don't like flat tappet cams for ONE simple reason, there to much work!
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I Can't find the post but Keith went into great detail as to his reasoning. It was comebacks and a high rate of failure, even after the dyno controlled break-in. It's that lone reason that brought me to the hydraulic roller. Other than the parts, the labor is actually less with the hydraulic roller (no lifter/cam lube prep, no removal of inner springs on hi-lift profiles, no meticulous "on dyno' break-ins)
Quote:
Originally Posted by Excaliber
(and STILL requires a good break in oil) |
Nope, nada, no-break-in
oil requied, unless you're one of the fanatics who still subscribes to the non-detergent, single weight, break-in oils for ring seating.
Quote:
Originally Posted by Excaliber
Hydraulic's have their place, in Undy's car, I'm not afraid to run the real thing.  |
Yep, that's the perfect place. Never liked adjusting valves in the 60s and 70s, still don't like it today.
Did I mention that a 100% aluminum motor, with all the heat related material growth is much better suited to a hydraulic (flat or roller) cam anyway. There's a narrow temperature band where the SFT cam will have the "right" clearance. I sure hope I'm not starting another one of them aluminum vs iron block armchair debates
