Crankcase vacuum pump options

[Chuck Leeper]

Not..

I'm thinking choice 3,I hear Jegs has a kit.

designed for use w/ mufflers/cat, etc. This is race car header stuff.

 

[S2V6RACER]

We are planning on going with the electric vacuum pump next season, set up the same way as Jasons.

 

[Pablo]

http://www.turbobuick.com/forums/ge...0-crankcase-evacuation-lt1-smog-pump-how.html


I chronicled what I did to use the Lt1 smog pump as a vacuum pump. It works great!

 

[chasmat2316]

I have been running the electric GM pump for two years now and it seems to work great.

Jace any pic's of your setup?

 

[Mad_Trbo]

After further review I found the problem I was having was with ring gap clearance. The clearances were set up incorrectly on #3 & #5 causing an unusual amount of blow by along with many other issues.

It's been a great learning lesson but I am now of the mind set that if everything is set up correctly the smog pump is unnecessary. But the good deal is that if you are using a pump, you may see some benefit with ring sealing. Good luck to all.

 

[TURBOPOWERED68]

i know its an old thread

Is anybody running a stock like setup anymore??

I can see running pumps if you want to get the most pressure out of your crankcase for racing reasons, but for most of us, the stock engineered setup should be just fine.

Hell, most of the time guys are looking to do this because it's making a mess at WOT, all of which can be cleaned up by running hoses off the breathers into an oil catch can and using the inlet pipe as vacuum under WOT. Yet no vendor makes an inlet pipe with a -6 tube attached to it. We all remember capping off the stock turbo's compressor bell tube because it sucked IN too much oil. Just slap in between the oil catch can and done.

Nick, I am surprised you aren't doing this, you seemed to side with the Buick engineers in prior posts on this subject. If I wasn't chasing down a trans shifting issue I would have pics on this and some data to back it up, I bet the stock way is what 90% of most of us can roll with.

too simple to consider????

i really like this idea
BUT
how would the car/ECM react to the unmeasured air??
What about routing it to just in front on the MAF?? its going to have a oil separator so there should be NO oil getting onto the maf?????