Crank Case Vacuum

[rrunner68]

In hard cornering situations, I'm seeing a little bit of oil coming through the breathers. I have the typical breather on each valve cover set up. I was thinking aobut buying a catch can and kagillion dollar moroso vacuum pump, when my friend suggested using a smog pump instead. I was pretty much thinking about making a bracket off of the frame rail and putting some light tesion against the inside of the Alt/WP belt. Anyone have suggestions for the pump tho, everything I've seen looks huge and unworkable. Or am i just spinning my gears and wasting time?

[parsonsj]

You'll get better performance, longer engine life, and better street manners if you go with a well-designed PCV system with a catch can.

jp

[rrunner68]

When you say a PVC system, are you talking about a standard PCV port off of one valve cover and no breather off of the other one? Using manifold vacuum to pull air? And then just pulmbing in a catch can with a valved return?

[parsonsj]

PCV is ventilation for the engine, and it uses manifold vacuum.

The way to do this is to follow the lead of the OEMs: allow filtered air into one valve cover (either its own filter, or via a port from the air cleaner), and put the PCV valve on the other, plumbed into manifold vacuum.

If you want to avoid pulling oil into the intake, you need to put a catch can between the PCV and intake manifold.

The idea is to continually pull filtered air through the engine (hence the V in PCV). It helps remove harmful vapors, reduce pressure on your gaskets, and will get rid of that annoying puff of smoke when you shift gears.

jp

[Pro Stock]

In hard cornering situations, I'm seeing a little bit of oil coming through the breathers. I have the typical breather on each valve cover set up. I was thinking aobut buying a catch can and kagillion dollar moroso vacuum pump, when my friend suggested using a smog pump instead. I was pretty much thinking about making a bracket off of the frame rail and putting some light tesion against the inside of the Alt/WP belt. Anyone have suggestions for the pump tho, everything I've seen looks huge and unworkable. Or am i just spinning my gears and wasting time?

A vacuum pump is the way to go, I have used them on street machines and race engines, wet sump and dry sump and they are usually worth about 10HP.
A low cost pump is available from Real World Race Components, their "mini pump" cost $300 which is half the cost of other aftermarket pumps and was designed by racers, they have several
mounting positions including a low mount bracket if you wish. You will also need to get a breather/catch can combo for the outlet side of the pump.
Google them for contact info, when you find their site it will say that it is under construction but there is still alot of info on it. if you call them ask for Ollie and mention my name, he's a good guy.

........Dale