This oil pump really sucks!

[sccacuda]

Called to get a progress report on my engine and had an interesting conversation with the pan builder. Stef's is building my dry sump pan for the 'Cuda. When he ask me what pump I was running, I told him a Dailey 5 stage. They then recommended building the pan out of .120 wall aluminum instead of .090 that is the norm. Of course I ask why. They said they have seen the Dailey pumps pull enough consistent vacuum to actually suck the bottom of the pan into the crank! Not high vacuum, but a constant 11". That just amazed me enough that I had to post it up and see if anyone else had ever heard of that?

[Ron Sutton]

Wow!

We did dry sump dyno testing in the 80's ... and stopped at 4 stages ... as the rotational drag from more pumps was taking away the HP we gained by pulling pressure out of the crankcase. I always suspected more stages would work well as technology advanced to reduce the rotational drag from additional pumps.

So ... 5 stages ! Cool !

[sccacuda]

Wow!

We did dry sump dyno testing in the 80's ... and stopped at 4 stages ... as the rotational drag from more pumps was taking away the HP we gained by pulling pressure out of the crankcase. I always suspected more stages would work well as technology advanced to reduce the rotational drag from additional pumps.

So ... 5 stages ! Cool !

Dailey builds the pumps for the Joe Gibbs Nascar teams and lots of the Rolex cars, etc... Cup are using 6 stage pumps now. Gear pump and lobe rotor suction. Check out Daileys website site for the billet integrated pump/pan assemblies. Super trick.