Today my new sump turned up. This unit is destined for my race engine, the rest of the kit is already set up and proven over multiple events in the 405.
The pump has 2 x scavange stages to pump back to tank and one pressure stage. The oil filter cover/seal plate and nipple allows the filter and cooler to be remote mounted. The volume of oil I now have in the system removes the need to have a cooler on board at all. Complete including hoses, I carry about 9 litres overall. Checking oil at the end of a full noise session has never shown more than 80C. I have the original oil temperature sender mounted in the oil reservoir and it has never shown more than 1/2 scale on the dash instrument.
The hoses I am using are quite a bit heavier than they could be, but I worked with materials I had readily available. If I ever go the next stage with car development, I could replace the heave hydraulic fittings and hoses with Aeroquip light weight hose and aluminium AN fittings. But in total there would be well over $1000 in bits to do so.
The only thing I haven't done on the new engine is sort out a vacuum regulator. Guys that run dry sumps on sprint cars etc, all run a slight negative pressure in their crank case controlled by a vacuum regulator. This pulls air in through a breather, often via the oil reservoir. I have my crank and head breathers running back to the oil reservoir with an overflow catch can and breather mounted in the boot beside the oil tank.
All being well, the new engine will be together and in the car in the next month or so.