Applying vacuum to the sump

[Zuffen]

I once read pumping the air out of the sump improved sealing of the rings and increased power generated.

I would think this would be great on a FI engine.

Does anyone have any experience or thoughts on the system.

I've heard of an air pump (polution devices) being used to do the pumping.

 

[fugly]

A couple of my mates have done this using the vacum pump off a TOYOTA 18RC engine, can tell you these pumps don't like oil getting into them, so a lot of effort has to go into separating the oil from the crankcase fumes, can't tell you any proven horsepower increases from using one of these pumps.

 

[cribbj]

Rod, my good friend Jeff Lucius installed a Krank Vent on his Dodge Stealth (Mitsubishi 3000GT), which claims to do what you're describing. Here's his write-up: http://www.stealth316.com/2-krankvents.htm

Jeff has a wealth of great info on his site.

 

[Lextreme II]

Rod,

I made this catch can without PCV and my turbo smoking issues solved http://lextreme.com/forums/showthread.php?t=4782

* I basically Remove the driver side pcv
* run a 3/8" line from both head cover
* join them with a T into a water seperator
* from seperator to pre-turbo or turbo filter.

 

[skid]

I once read pumping the air out of the sump improved sealing of the rings and increased power generated.

I would think this would be great on a FI engine.

Does anyone have any experience or thoughts on the system.

I've heard of an air pump (polution devices) being used to do the pumping.

Rod I guess this would cost a few bucks, and if you spent a bit more you could have a full dry sump set up which would give you good oil flow at high g points, and also further gains as the crank wouldn't have any windage losses splashing through the sump.

I would love a dry sump set up (and would help with engine location clearances) and would be grateful to any members who have done this to post details of the crank scraper and sump set up.

Cheers
Mark

 

[ed_ma61]

http://www.v-eight.com/tech_forum/viewtopic.php?t=38