Dry Sump NEED HELP!!!

[fastford]

I'd say 2 stages of scavange will require good ventilation. Rule on pressure is 10 lbs per 1000 rpm . also make sure you have good ventilation at the tank.

ive never had a engine only run 10psi at 1000 rpms, I considered that rule to apply as you bring the engine up from idle, i.e. if your idling at 30 psi at say 1000rpm , as you throttle up it should gain 10psi for every 1000rpm gain. I do agree that to much pressure is bad , so I regulate my pressure to 60psi max with engine hot. I also run my engines totally sealed with a pop off valve on one valve cover and only the tank vented and never had a problem. I did have a problem with the liner turning loose on a scavenge line one time like the poster below you said.

[fastford]

Fastford this engine is a solid roller with pressure fed lifters so we are idling at 1250 to keep oil on them, everything I've learned about lubrication lately has gone against my old school theories of more pressure is better. I actually had to change pulleys reduce psi and find the sweet spot for this engines consumption. The 5 20 Dominator Amsoil brought 22 psi at hot idle, the BP 10W 30 brings 25 psi hot idle which is more than enough so long as the psi increases in a linear scope as rpm increases, we hit max psi @ 2900-3000. This motor has all the best stuff, callies dragonslayer crank, isky red zone lifters, race tech pistons, olliver billet rods, TFW heads, ferrea valves/titanium retainers, custom bullet cam D260/L700....yatta yatta, no expense spared...dynoed at 662HP 576 lb ft...for a street car that weighs 2300#'s it runs like a raped ape-just need to get the (not a nice word)(not a nice word)(not a nice word)(not a nice word) pump to work right!

ive never liked to much pressure, but I do things a little different than you, I gear my pump up to get hot idle pressure I want, then use the regulator and regulator spring to regulate the max pressure I want

[GBowman]

Thx for the input ev one...we are starting the process right now. Car is on the lift and beers are staying in the fridge!!!

[GBowman]

Fast-yes, the vent line to the breather can is a -16, I just went out and looked.

[wisdirtfan]

Ive never ran a -16 breather mine is -12 also the scavenge lines are -12 from the pan -10 from the valley into the pump then two -12 lines through the Oberg then two -12 lines back to the tank the feed from the tank is -12 the pressure out is -10 and I run sealed with a pop off valve and -12 from the top of the tank to the breather. I can honestly say Ive never had a single problem with the oil system ever it has always performed flawlessly. Hope you get your problem figured out.

[wisdirtfan]

The other cause of oil blowing out the breather tank is too much oil in the system I had that happen once when an inexperienced helper filled the tank after a change and put 2 too many quarts in.

[GBowman]

No restriction anywhere, return filter was spotless...checked flow through all hoses-wide open. Only 2 things we can think of is the small pulley at high RPM creating too much pressure on the return line to the tank putting too much pressure on the seal??? Or an internal prob with the pump itself, I'll be calling Johnson today.

[fastford]

I thought you geared the pump down? any way with all that checked, my bet is a problem with the pump, which I suspected from the start, ive dealt with a lot of other pumps, but I have never had my hands on one like yours, I don't know how the internal regulator is designed, any way, good luck to you and when you finally find the problem , please let us know.