Ls1 turbo breather question

[boostified]

I have a 5.7 ls motor with a t76 turbo. Just got the first tune for 6psi, and was putting some miles on it. About every other time I would get into boost, it would start smoking. Bad. Like, inspector gadget, smokescreen bad. Drove for about a half hour, and had about 3-4 ounces of oil in my makeshift catch can. Precision turbo suggested more breather area. How can I set this up, using stock valve covers? There is the two 3/8" tubes on pass side, and the one 5/8" on drivers side. Do I need a pcv valve for each cover? The holes in a pcv valves are only 3/8"

 

[Chuck Leeper]

Mighty Mouse has a breather that goes in place of the oil fill cap. Might try that.
Some guys weld AN fittings to the covers, and use much larger hoses.
Take a look over on LS1tech. Lots of posts, pics, etc on the topic.

http://www.mightymousesolutions.com/

 

[boostified]

Mighty Mouse has a breather that goes in place of the oil fill cap. Might try that.
Some guys weld AN fittings to the covers, and use much larger hoses.
Take a look over on LS1tech. Lots of posts, pics, etc on the topic.

http://www.mightymousesolutions.com/

Thanks. I will check that out

 

[Chuck Leeper]

Thanks. I will check that out

Post up how you have it plumbed....
The MM site has PDF instructions as to how each of his cans are plumbed. Compare them to what you have....

 

[boostified]

Well, here is what I came up with. I bought a catch can from Lane automotive . Modified it for a 2" breather on top, and a 3/4 bung , to plumb to. Made a bracket to hold this, and my radiator catch can.

 

[boostified]

Then I bought a 3/4 by 3/4 elbow, for pex tube, attached a section of 5/8 hose to it, and around back of fuel rails, to pass side. Put a 3/4 by 1/2" t fitting to rear valve cover vent tube.

 

[boostified]

Then a 3/4 by 1" pex reducer, to a 3/4" section of hose, another t , to the front cover vent tube, then up to catch can.

 

[boostified]

Seems to work very well. No more smoking issues.