Dry sump venting open or closed.

[vector1]

I've settled on running my Dailey pump at 90+% which is the next step up from 75%, the 75% was a tad low at the idle for some reason (engine builder I would guess), and I was under the impression for the air/oil separator to work it needed so much rpm, which the 90+% ratio would provide at the lower running rpm's, so let'er spin. It's a neat pump, you can also change the size of the internal pressure gear, and the tolerances are very close on the inside and what he uses for bearings is interesting. Nice stuff and a great guy to work with.

[PLDRIVE]

Ant anything under 12" of vacuum is not going to cause any problems, but
go with what your builder says.

Vector1 I guess Dailey ops for a smaller pressure section. He is does make nice stuff.
Mine runs at 65% and idles at 35psi hot, with 1.25 pressure section.

[Ant]

Originally Posted by PLDRIVE

Ant anything under 12" of vacuum is not going to cause any problems, but
go with what your builder says.

Vector1 I guess Dailey ops for a smaller pressure section. He is does make nice stuff.
Mine runs at 65% and idles at 35psi hot, with 1.25 pressure section.

This pump has a 1.45 pressure section, if its too much I can fit the 1.25 gears with spacer...