Good call on the high flow larger micron rating oil filters. You can run it up and see how they flow, then change out for the better filtering. Interesting to see how the tighter micron filters would flow in parallel with the others. The other side of the filter would have less pressure with the tighter media, and would likely restrict flow.

Maybe have a seperate oil polishing system that is lower pressure and just keeps the oil clean. More parts and complexity, but could be the better option to a very high oil pressure system that you want to simplify on the main feeds.

Awesome to have it in the water! The engineering is truly impressive.

Hard to tell from pictures, but my experience with this engine is that the oil flow is absolutely massive, so should require quite large lines everywhere etc.
In the tank the centrifugal cleaner for example was on the return side, so it did not mess with oil pressure. As I understand it your oil cooler is on the high pressure side?
Perhaps it could be moved to the return side.

Do you have an oil pressure gauge at the oil pump so you know the initial pressure is correct?
Just to verify that the pump is putting out the correct flow and has enough restriction (something could be leaking).

My oil pressure gauge is in the stock position, at the entrance to the block. I have 8 bar pressure at idle and 10 bar everywhere else.

Great work and good luck.

I didn't have measure point after pump, only oil going in the engine. Now I made gauge port right after pump to figure out is pressure falling after pump or after filter housing.

Cooler to return side will be better to prevent pressure drop on high pressure side but it will be bad idea for oil air removal inside dry sump tank. Hot oil doesn't hold air as much as cold.

I'm not afraid about bigger micron filters, truck engines run million miles with those and my Fountain oil change interval is 60 times smaller. For example Scania centrifugal cleaner can be used but I don't thin it's necessary. By the way, under 2000 year scanias didn't have oil filter at all, only centrifugal cleaner! Small filter for turbo is used.

What application you use Transmash? Pulling engine?

You can have a lot of aeration in the motor oil before it becomes a problem according to this SAE paper:

https://www.sae.org/publications/tec...ontent/932785/

I see, quite interesting system for oil distribution and fully agree that with all that information the high pressure must be somewhat correct. No point to risk it all at this point by trying with less. Still I would try to avoid increasing the pressure by stiffer viscosity as I would be worried that the oil channels create too much restriction and only the first bearings in the line get properly lubricated. Maybe the thick oil does not flow properly all the way to the other end of the crankshaft even if the pressure at the oil galley is high? Not expert with any kind of fluid dynamics but just a thought.

Would there be any idea to cool the oil after the filters, maybe the hotter thinner oil would pass the filters even easier? I get that this might not be too easy to do if you have the oil thermostat in the filter housing.

I read somewhere that you did closed cooling on a pair of 1000 plus horsepower motors back in the day but cannot find the article now. I’ve tried emailing you at work with no success. Could you please contact me at your convenience? 901-491-4500

I have some 8mm video of you in that past life running BAM in the playpen. If memory serves me right the hull was red??? I need to find that reel and digitize it. Sorry for the hijack! Now back to the Fountain.

It's the "Stridsvagnshotrod" Volvo PV build, so the engine is untouched.

Must be a pressure limiter somewhere because it never exceeds 10 bar.

Fountain is in running condition again. Oil system get more flow and injection pump governor is changed from RQV to RSV. I will make test run soon but before that I have to adjust oil pressure and injection pump idle damper. Idle is s poor as before but now it have more adjustments.
I like this sound too, it sound like blower surge BIG bore lamborghini but engine have to run better idle.

Outstanding!! I am dying to see this big monster running on plane!!