Ford Racing 427W ate cam gear

[Luce]

If the pressure is below the bypass pressure, all other things being equal in a loose engine, the HV pump will read a higher oil pressure than a standard.

The bypass setting will be the absolute maximum oil pressure you see. I don't know if the bypass pressure is the same between the two pumps. Doesn't matter to me. I want the HV for when the bypass is closed and I'm hot idling after kicking it in the teeth. I want my hydrolic lifters to not bleed flat.

If you tell me I should have the correct bearing clearances instead and the HV pump is a bandaid masking a bigger problem, I'll have to agree. But the HV pump might make a tired old engine make it through the season and that's good enough reason for me.

My problem was having a iron cam and thinking it was steel. Shame on them for the poor documentation I got with the motor, but shame on me for not calling and getting the answers I should have. And it's no longer a problem!

[dallas_]

Originally Posted by Luce

My problem was having a iron cam and thinking it was steel. Shame on them for the poor documentation I got with the motor, but shame on me for not calling and getting the answers I should have. And it's no longer a problem!

So you confirmed you had an iron cam gear?

Interesting since they say it's steel.

[DAVID GAGNARD]

Luce:

If the pressure is below the bypass pressure, all other things being equal in a loose engine, the HV pump will read a higher oil pressure than a standard.

Yes, I agree with that statement........

The bypass setting will be the absolute maximum oil pressure you see. I don't know if the bypass pressure is the same between the two pumps. Doesn't matter to me. I want the HV for when the bypass is closed and I'm hot idling after kicking it in the teeth. I want my hydrolic lifters to not bleed flat.

o-k, I agree with that also,in that case, a HV pump is not a bad choice...

If you tell me I should have the correct bearing clearances instead and the HV pump is a bandaid masking a bigger problem, I'll have to agree. But the HV pump might make a tired old engine make it through the season and that's good enough reason for me.

Not saying your bearing clearances are out of whack,I have no idea what they are.
Second sentence, most definitely,a HV pump will help a tired old engine go many more miles....

Not saying nor never said that one should NOT use a HV pump, they have their place,I just think they are over used.....
Ever pull a valve cover off and start the engine,just to see how much oil is flowing out of the pushrods???? I have, on many occassions,actually the last time was yesterday, changing a seeping valve cover gasket on a newly built 331 stroker... the engine had been run for 30 minutes, the oil temp was 160 and the idle oil pressure was 40 psi, while I had the valve cover off, I started the engine, the back 4 pushrods were shooting a stream of oil that cleared the head by 6 inches!!!!! the front 4 pushrods were shooting a stream of oil that was just cleared the head.not quite,but close to a solid stream of oil coming out of them all this at 40 psi, can't imagine how much oil would be pumped thru the pushrods at 60+ psi.....this engine had 15/40 Shell Rotella T oil and a Melling High Performance STANDARD volume/STANDARD pressure oil pump on it.

David