Vac pump with turbo motor

[Bobalos]

does a turbo motor benifit as much from a vac pump as a NA or N2O motor does?

thanks
Bob

[Jim Monson]

Mine keeps the boost from blowing past the rings. I can watch as boost goes up, vaccum goes down. I would hate to see how much pressure would build in the crank case with no vaccum pump.

[Bobalos]

thanks Jim,

If you dont mind me asking. are your pistons gas ported (which type of ports)? do you use coatings on your pistons?

thanks again Jim.

Bob

[Jim Monson]

My pistons are gas ported but I'm not sure if it helps all that much. The holes are in the top of the piston. I know that I have to deburr all those little freakin holes on every piston!

I don't use coatings. I'm sure that they help but I'm just a poor white boy.

[Six_Shooter]

Jim, would like to hear more about the relationship between boost pressure in the manifold and the vacuum in the crankcase. I know you're a sensor/datalog junkie, so this doesn't surprise me that you have this data. :lol:

I'll be converting a Ford A.I.R. pump for my truck, and putting it in place of the power steering pump, for use as a vacuum pump. :)

Jim, also what are you using for a catch can?

[Jim Monson]

I just run a plastic JAZ catch can. Yes, I have data for boost vs. vaccum. I don't pull a ton of vaccum because I run a wet sump oiling system. I just want to make sure I don't pressurize the crank case.

I can tell you what happens when you put 30lb of boost in the oil pan. :oops:

[Maliboost]

I can tell you what happens when you put 30lb of boost in the oil pan. :oops:

You spit oil out of every seal?

Bob

[Jim Monson]

You spit oil out of every seal?

Bob

.....and LOTS of it !