Senior Tech Team
Join Date: Apr 2012
Location: Yerington, Nevada
Re: Valve Adjusting Continuing Saga
It is because the inlet valve closing time is counter productive to capturing and holding enouogh mixture in the chamber to make power.
Two ways to fix it, change the cam to one that has a closer intake valve closing time, less duration, sooner intake valve closing time, or, add Rhoads anti pump up lifters TO THE INTAKE VALVES, NOT THE EXHAUSTS. This will close the intake valves sooner at lower engine oil pressures, later when oil pressure reaches full pressures. This in effect gives yu a milder intake profile, better mixture capture and higher DCR compression ratio at between idle and when the cam "hits".