Vacuum pump help

[HR9121]

Rick I really didn't clarify that I haven't installed the vac pump yet I was actually going to in hopes that it may help me with my problem. I'm not really trying to gain hp just trying to help with some little leaks that are commonly associated with these high compression stroker motors. I appreciate everyones input and suggestions. Another question that comes to mind after reading Chuck's post is if you get too high of a vacuum could you run into some lubrication problems, possibly pushing oil away from the pick up. This is a wet sump application.

[Bill Baer]

Cooter

The guys I know who have had wrist pin problems are spinning the vacuumn pump faster than 1/2 crank speed and using dry sump systems in some cases they need to disconnect the pump during warm up.
They also with wet sumps see a reduction in oil pressure due to the reduced inlet pump pressure.
I have had no such problems.
Putting a vacuumn pump will reduce and or elimate almost all of your oil leaks, however the vent on the oil breather tank will mist a little oil when the oil is hot, it's no much but to me it's a little annoying.
I too use the felpo crank seal.

[HR9121]

Thanks Bill for the info, very helpful now if I can just get time to install it.

[THE LEGEND]

Coot,
Have you thought about installing a pcv valve on both sides. We were doing that with Stocker motors a few years ago.

[nhra686]

We run regular seals and pull 12-15" of vacuum with no problem.

[voltdr]

I run about 14.2" at the finish line. I run the crank seal in the normal direction. No leaks, no issues. As stated earlier, the vac pump will help cure most oil drips and oozings.