Crank case ventilation on blower motor
Crank case ventilation on blower motor the title says what i am looking for but I will exlpain my situation....I have 355 LT1 pushing about 15 psi with a d1sc. The problem I am having is oil leaks from random places when I boost. The problem I think is lack of proper ventilation to the crankcase. Anyone have similar problems? looking for advice on how to vent my crankcase
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TECH Enthusiast
Joined: Sep 2003
Posts: 501
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From: bethel PA
Originally Posted by Snyper
take the hose from the valvecover and run it to the suction side of the blower..that will take care of the problem.
TECH Addict
Joined: Jul 2005
Posts: 2,153
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Originally Posted by lethal93ta
thats what I did on mine and it fixed it, mine use to push oil out of the bottom of the dip stick right onto my headers.
Mike
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Joined: Jul 2005
Posts: 2,153
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Originally Posted by procharged355
ttt..... Is it bad to have the oil in the intake side? I don't mean to sound dumb but wouldn't it ruin sensors like the ait or would that not be an issue.
Originally Posted by procharged355
ttt..... Is it bad to have the oil in the intake side? I don't mean to sound dumb but wouldn't it ruin sensors like the ait or would that not be an issue.
Exactly....... you shouldnt be pulling oil into your motor......
Most do the breather setup by its self or they do a breather catch-can setup that catches the oil and lets the crank case vent.... it doesnt matter what FI setup your always going to have blowby.....
You can do rubber fuel line/hose off each valve cover to a catch can or go beyound and use braided line....
Mine
Kyle
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Joined: Sep 2003
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From: bethel PA
I had a catch can on mine a line from each valve cover to the can then I took the filter off and ran a line to my intake tube so it would catch any extra oil, I never had any problems with oil even in the catch can tho.
ttt after everyones help....thank you, I think the way to go will be to attach a hose from the intake side of the blower to a catch can. Then I will attach the hoses from the valve covers to the catch can or a special air compressor water removing jar...In effect the oil will drip down inside and the intake will suck the unwanted oil pressure out of the crankcase resulting in Positive Crank Ventilation. If anyone thinks that this will not work Im still open for advice.
Last edited by procharged355; Jan 14, 2007 at 10:43 PM. Reason: update
why not just let the vaccum pump just push the air out to atmosphere??? why would you have to let intake pull it if the vaccum pump is pulling it??? if anyone can explain why this system wouldnt work???? just a noob question
Joined: Jun 2004
Posts: 1,501
Likes: 7
From: Ft. Irwin, California (But Virginia is home)
Originally Posted by NA$TY-TA
Exactly....... you shouldnt be pulling oil into your motor......
Most do the breather setup by its self or they do a breather catch-can setup that catches the oil and lets the crank case vent.... it doesnt matter what FI setup your always going to have blowby.....
You can do rubber fuel line/hose off each valve cover to a catch can or go beyound and use braided line....
Mine
Kyle
Most do the breather setup by its self or they do a breather catch-can setup that catches the oil and lets the crank case vent.... it doesnt matter what FI setup your always going to have blowby.....
You can do rubber fuel line/hose off each valve cover to a catch can or go beyound and use braided line....
Mine
Kyle
BTW, that's a really nice setup (pretty)... Mine's redneck engineered compared to that
Originally Posted by smoke20
why not just let the vaccum pump just push the air out to atmosphere??? why would you have to let intake pull it if the vaccum pump is pulling it??? if anyone can explain why this system wouldnt work???? just a noob question
first a vacuum sucks not blows lol.
second too much vacuum in a motor will pull oil up and fill the catchcan up with oil, to a degree it has to be vented, you dont want too much vacuum.
my friends racecar does that after he makes a pass, we're trying to figure out a way to help vent the motor out cause its sucking oil. but he's spraying a big shot.