Re: Packard Tool J-2553, Need Tool or Specs.

Posted by Owen_Dyneto On 2011/5/13 18:11:10

OK, glad you "got it", it's really important. There is zero clearance when the lifter is pressurized with engine oil. I frankly forget what clearance there would be (with cam lobe down) without oil pressure, but I'd expect it would also be zero with an small (and depending on where you where in the 0.030 to 0.070 range) compression of the hydraulic section spring.