Dry Sump Plumbing Question

[perfconn]

Thats the right way.

[fast_crew]

I will add that a 4 stage pump, will need an iron block (alum. blocks usually don't have the best of ring seal when making big power) and very good ring seal to pull a vacuum. 5 stage is alittle more forgiving on ring seal and still be able to pull a vacuum. Never vent the tank back to the engine, just put a breather on it. With a 4stage if block has drains in the lifter valley, pull all 3 scavenge stages from the pan, this would put the vac. where it does the most and aid in oil return, if valley is sealed up rather well, then pull from lifter valley with 1 stage. Alot of guys are putting a fitting/tube in the china wall in the front of the block and running the tube back to the RR corner of the valley. What ever pump and plumbing you decide to use, make sure there is a screen on EACH scavenge section.

[DK1]

So tell me if this is correct:

I have a 5 stage pump, iron block, aluminum heads, and the oil pan only has 2 returns. Going to run 2 lines from the pan, 1 from the valley, and 1 from the ride side valve cover. Run the pop off breathers and vent the tank to a catch can.

That sound right?

[perfconn]

Good as it gets.

[jrkracing54]

Hey Perfconn, do you have any fabricated aluminum valve covers for sale? Used is fine if they are in good shape. Also which ones do you think are the best? I'm running them on a steel block aluminum head NLMS engine. I run a vacuum system that pulls out of the left side header with heater hose. Thanks John 1*

[perfconn]

No covers,sorry.

[jrkracing54]

Thanks anyway. John 1*

[IROC12]

Vent can

Where the best place to mount vent can.

[perfconn]

Above and forward of the drysump tank if possible.

[BLAHBLAH]

drysump system issue.....i switched tank styles after switching car classes. now my drysump system is blowing oil out of the breather tank,,,,,not just a little over two quarts in a 35 lap feature. i had a peterson tank with the built in oberg before, also a deck mounted oil cooler and finned tube line into the feed side of the pump....now i have switched classes and use a sprint car tank with a remote breather.no oil cooler, any ideas why i have an oil issue now?never lost a drop before.

[perfconn]

Possibly over filling.

[BLAHBLAH]

i thought that also, so i rechecked the amt of oil i installed, i put in 2-1/2 gallons this is with the complete system drained. oil lines, pan,etc....

[perfconn]

There is no set amount for any drysump system because they are all different.Tank needs to be 3/4 full with the engine about 2500rpm.

[BLAHBLAH]

3 gallon capacity, thinking i am safe with 2.5. i spoke to a friend and he said i may have an issue with the baffleing inside the tank not letting the oil drop quick enough. and creating a splash issue.

[perfconn]

Check it with the engine running.