Quote:
Originally posted by mike mueller
interesting, could a radical or dual pattern camshaft need a special method for adjusting the valves??? if the cylinder is at TDC with both valves closed, I don't see how this could be any different???
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I, adjust valves depending on material: The aluminum push rods, I adjust the valves, with the piston at top dead center, both valves closed, with a very mild cam .006 Int .008 Ext, with a medium cam, .004 Int .006 Ext.
With Chromoly push rods, I adjust the valves, with the piston at top dead center, both valves closed, and with the steel pushrods usually a high performance cam is used, thats with lots of lift and duration, which requires heavy duty springs, I adjust at ZERO valve lash, YES ZERO VALVE LASH, both valves are closed, I adjust them as close to ZERO as I can, I adjust them so there is no clearance, but can easley spin the pushrod between my fingers. Now you may be thinking, why would he do it that way? Aluminum pushrods expand with the rest of the motor, if you start out .006 when the motor is cold, you will end up at around .006 when the motor gets hot, with steel push rods, if you start at .006 cold, when the motor got hot you could have anywheres between .010 to .014, with the ZERO lash, I have checked several times, both Int & Ext where between .005 and .007 hot. Thats why I do it this way.
Richard