loudandproud wrote:What if you set the preload to nill? Cant pump a lifter anymore...Then youre running practically a solid lifter and lofting the valve.
With the ramp that's on the stock GM 604 cam, that would put the intake valve closing at 92ABDC
Can you explain the math on that for me? Im not sure how just going solid would do that much. How can you predict the closing point with loft considering it is rpm/valvespring/valvetrain wieght and geometry dependant?
Isnt this the theory behind setting a very light preload on a hyd lifter? It cant pump up anymore, therefore it wont hold the valve off the seat...?
Im not doubting you...I am here to learn... just would like to know where my thinking is flawed...
"Buying parts I dont need, with money that I dont have, to impress people that I dont know".