electric vacuum pump source?

[alwaysFlOoReD]

I'm wanting to use an electric vacuum pump to create a negative pressure in the crankcase. The main reason is to prevent oil leaking. I want electric for ease of installation unless there is a stock pump to fit a 91 4.0l. I need high volume as well as high -ve pressure.
Any cheap sources? I've thought of the vacuum operated hubs or ac compressor but don't know enough.
TIA,

Richard

 

[alwaysFlOoReD]

I found a couple of shurflo diaphragm pumps meant for a trailer. They are 12 volt. Would they work as a vacuum pump without burning up?

sent while sitting on the throne

 

[RonD]

I assume the PCV valve isn't working as well as you would like?

You could use a vacuum tank with electric pump, like they use on diesels since they have no throttle plate so no vacuum.
This is a Ford unit with pressure regulator: http://www.accuratediesel.com/shop/132.html

In any case you will need to use an oil catch can when using an electric pump for crankcase, and a tank would help as well, these are usually used for vacuum controls or power brake assist on diesels, not sucking out air with oil vapor in it.

 

[alwaysFlOoReD]

Brand new pcv and I still have a major rear seal leak. This is on my race truck. I have another engine but wanted to see if I could jury rig this motor for now.