Re: Packard Tool J-2553, Need Tool or Specs.
Posted by gone1951 On 2011/5/13 12:34:26
Quote:
but if seats and/or valves were machine cut and/or any valves replaced you need to establish the correct clearance (0.030 to 0.070 inch if I remember correctly).
I must be missing something here. I will be doing a valve grind this summer on a 327 with hydraulic lifters. Haven't looked it up however I think with all engines,irregardless of manufacture that have hydraulic lifters, the valve clearance is 0. Also the plunger/piston inside the lifter must be depressed against the internal spring somewhat. For instance a chevy with adjustable rockers you first adjust to 0 clearance then take the adjustment one full turn past that to place the internal piston in it's correct operating position.
Your reference to 0.030 to 0.070 inches must be the clearance for adjusting for solid lifters.
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