Ok, I am ready to consider another oil pump. The Wasserboxer holds 4.8 quarts. If I run an HP1 and over fill it, I can probably get 5.5 quarts in the motor. I am thinking of poop canning the dry sump and CB pump, and installing a melling that I have sitting on the counter. Before I spend money for a new Schedeck 30mm or a Bugpack 2 stage, I want to see what kind of oil pressure I can get with the melling at 230 degrees. I also want to see if the oil pressure will stay at 75 pounds at the end of the 1/4. The other scenario is to block the ends of 2 outer pushrods.
Anyways I did not realize that the wasserboxer case holds 4.8 quarts. This is the same as a type 1 with deep sump.
Yep, that's why we were all kinda wondering WTF you needed a deep sump
Unfortunately the Melling fits so badly and is ~zero expansion, so oringing is basically required.
I just used one on a throw together 1800 build (scrape the floor) pump dual oringed, with balance grooves, and set for std chevy end play, (really tight)
This is an experiment, as the Mellings are infamous for super high/blow filters/plugs off pressure cold (iron holds tight tolerances) and ~no oil pressure hot, due to sloppy case fit, esp due to the expansion difference.
Mellings are generally not recommended
for this reason.
I'm hoping the pressure balance grooves and oring combo will tame max pressure and hold hot.
(Probably be next week before it fires due to work)
If you are looking at that sort of coin, check with Jake and see if he is selling his billet pumps.
...OTOH, More oil may not be the solution.
Read the PCV threads for an idea or three, and.. what ARE you doing for a cooler?
(and have you tried the larger fitting on the pump inlet?, and using a full flow cover as the outlet?)
The trick may be not just not letting your oil get HOT.