Wasn't there a high volume oil pump for the A15? What do you guys use with your oil coolers?

I don't have an oil cooler, but I hear the cheap way to get a high volume oil pump is to get some L series pump gears and turn off a spacer from a spare A series pump body and then reassenble the a series pump with the l series guts.

interesting... i just happen to have several spare a series oil pumps. Hmmm just have to find a new l series pump.

Anyone have a how -to? or will I be writing one?
I found a new Lseries oil pump for $44 So I'll be getting one of those to experiment with. I have a dead A15 oil pump., so I'll take that one apart first to see how this goes together, then I'll do it with the good pumps once I understand what i am doing.

So after I get the L series oil pump, I take that pump apart to get the internals of the pump and those replace the a series internals, the L series internals are thicker and will require a spacer to be made for the pump cover? Is that correct?

more pics soon as i tear down the a series oil pump.

Do you really need a hi volume oil pump?
The standard oil pump on the a-series does a great job!

What I meant was use the Lseries pump gears in the A series pump boby. Because the L series gears are thicker you will need to part off part of another a series pump body in a lathe and assemble with a gasket either side of the spacer section. Does that make sense?

PS I haven't done this, Ive only read it here.

yeah I think we're talking about the same thing. The L series gear is taller as it were so the pump housing needs to be taller to hold the new gears. Souds pretty simple, I don't have a lathe... so that will be interesting but i understand what to do.
We have a website here where you can send in cad drawings and they make the part and send it back, not too expensive for something like this... I think i'll have to try it.

Thanks for the info!

Is there any demand for the spacer to do this conversion? I could get some made to sell.

Better yet, are there any hi volume pups for the a15 already made?

My short experience with racing A series is that a hi - volume pump is unecessary in an A series...but a cooler is.
I run an oil cooler and have no probs with oil temp or pressure. And Im running a 250hp rated cooler too!

So it seems that nobody thinks an A15 needs a high volume oil pump. You guys might be right. I like to over do things.

On my E16 engine with this same oil cooler I had 50+ lbs of oil pressure all the time using the stock oil pump. I also add something to the system, I put a hydraulic system check valve right at the oil pump outlet, before it goes to the oil filer and thermal reulator, so the system can't drain back into the oil pan. It makes a neat noise at idle too. Am i crazy?

There was a high output oil pump for A series motors. I have/had one somewhere, but last time I looked for it I couldn't find it and fear it may have disappeared when the garage was burgled.
Anyhow, instead of a rotor with lobes on it there were two gears that pumped the oil. It also had oil cooler connections on the exterior of the pump.