Anyone know the stock H22A1 oil pump flow at various rpms? I'd like to know what oil flow is needed from an Accusump to protect the engine in hard cornering.

The real question is, what oil pressure is needed at 6000rpm to protect the engine? I'm guessing the answer is practically impossible to know, but thought I'd ask anyway...

This issue comes up in part to my earlier rant about the Canton Accusump and its electric valve. The valve is fairly restrictive and I'm trying to determine if it's going to be a problem. I can't use a manual ball valve since the Accusump is at the back of the car. However I may be able to use a cable-operated manual valve if the electric valve is a problem.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kb58 &raquo;</TD></TR><TR><TD CLASS="quote">
The real question is, what oil pressure is needed at 6000rpm to protect the engine?</TD></TR></TABLE>

What I've been told is that you typically want about 10psi per 1k RPM for proper lubrication. So, at 6k RPM, you should be seeing around 60psi.

 

try emailing or calling Larry, http://www.theoldone.com

 

honda service manual seems to set the reliefe valve at 50 psi at 3000 rpm and 10 psi at idle, as a minimum spec.......the old rule of 10 psi per 1000 is there, meant for 5000 rpm SBC chevy's I think.
Nascar runs 9200-9400 rpm for 500 + miles and they barely run 50 psi and they basically use water as oil.....lol
at 6000 rpm, 40-50 psi of pressure is probably plenty.
I have run 60 psi at 9500 R's in an H22.
too bad the factory crank is not direct shot oiling.....
the girdle benefits from some oiling mods as well..and numerous other details to keep the bottom end alive.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PocketRockets Racing &raquo;</TD></TR><TR><TD CLASS="quote">
Nascar runs 9200-9400 rpm for 500 + miles and they barely run 50 psi and they basically use water as oil.....lol</TD></TR></TABLE>

Well they also toss the engine after one race.

 

I only see mid 40'sand ridiculous oil temps in my single cam at the end of a race, and it hasn't blown yet.... well at least not from oil pressure, but that is another story.

However, I would love to get more oil pressure out of it, but it doesn't seem like there are any good ways to do so under HC H4 rules.

My prelude sees in the 90's with a prodrive pump. You can actually see pressure drop once in a while because the relief valve keeps opening from so much pressure.