[mike wilson]

I would like to thank everyone for their input concerning hydrolic roller prep. In order to maintain civility and professional courtesy I agree in part with all of you. Pumping up the lifters manually ensures that they "are" and it is true they will bleed off as you adjust each one. Priming the engine via the oil pump is an absolute must for any smart engine builder and also ensures oil to all engine parts including lifters. I don't however see how a spring change would come into play if the springs were adequate to begin with. I wanted to post this question because as you all know if you ask 25 people A mechanical question you will get 26 different opinions. Thanks again!

[lmsport]

What spring change?

When building stock engines, I adjust the valves with the lifters as removed from their package. I install the valve covers, manifolds and distributor if required, and the engine goes in the car without any further attention. I prime the engine with a pressurized container of oil through the oil pressure sending unit access on the outside of the engine. Spinning the pump is just too much trouble in late model engines.

[Richiehd]

So what is the question? Spring change only required with a flat tappet cam for proper break in. As far as priming, yes, everytime a new pump or motor installed. Why wouldn't you?

[cobalt327]

Originally Posted by mike wilson

I would like to thank everyone for their input concerning hydrolic roller prep. In order to maintain civility and professional courtesy I agree in part with all of you. Pumping up the lifters manually ensures that they "are" and it is true they will bleed off as you adjust each one. Priming the engine via the oil pump is an absolute must for any smart engine builder and also ensures oil to all engine parts including lifters. I don't however see how a spring change would come into play if the springs were adequate to begin with. I wanted to post this question because as you all know if you ask 25 people A mechanical question you will get 26 different opinions. Thanks again!

The lifters can be dipped into a container of oil but unless the manufacturer's instructions tell you otherwise, there's no need to pump the lifters up before installing them.

There are some exceptions to this. For instance Rhodes lifters DO recommend their "original" lifters be pumped up prior to installing and adjusting them to 3/4 of a turn, or so the lifter cup is about 1/16" below the retainer.

BTW, was this thread in reference to another thread?