Join Date: Dec 2001
Location: Belleville, Illinois
Thanked 22 Times in 17 Posts
Re: What should I expect when I prime my engine?
It's a long path from the pump to the rockers. After going through the filter, the oil enters the main galley that feeds the crank mains, cam bearings and lifters. The lifters actually pump the oil up the pushrods to the rocker arms. I guess that eventually the pump could get oil up there, but it would take a long time.
I've heard of engine builders filling the pushrods with oil before putting them in the engine. I suspect thet most of it would drain out before the rocker arm got put on and tightened down, sealing the top. But who knows.
Anyway, don't be surprised if no oil gets to the top end until the engine runs for a minute or two. Just make sure that everything up there is well oiled before you start it up.