Re: Setting Valve Lash, Different Everytime??
E - exhaust
I - intake
E-O, when the exhaust lifter just begins to move just off fully closed
I-C, when the intake valve just comes completely closed
These are the points the lifter face is at the center of the cam lobe being adjusted's dead center point, not up on a ramp, not here or there, but dead center on the base circle of the lobe.
Now, if anyone wants to challenge (which has been done numerous times, with the SAME results, please go head on with it), because, after all, all I am is a moron about engines, all I do is ignition systems and RACE ENGINE DESIGN for MotoGP. We will need someone with a block and cam bearings, cam for that engine, any will do, and two lifters. Insert cam and lifters into block, identify ONE set of valves, one exh, one int, and turn the cam until the E-O, I-C points are reached, and look at the lifter and lobe through the crankshaft cavity, report back.
Works on EVERY cam, and EVERY grind ever made, has since Egyptians built the Sphynx using a /59 Chevy 4 door station wagon.
Not here, there, in between, or over there, next week, the year 2030, standing on one's head, just what it says above.
To use Poly-Loc's correctly, the top of the stud needs to be ground squared off, no divots, no cups, and, it takes a bit of practice to et the things adjusted correctly. The stop screw will raise the Loc up the distance of the thread to thread clearance as it is tightened, if done that way, and, some get the hang of tightening both the stop screw and Loc together to set the Loc.