Engine/Transmission (1998.5 - 2002) Thoughts on Crankcase vent

[tpruitt]

Ok i did the fix where you plug off the factory crankcase vent move the vent to the top of the valve cover. Well this has solved the problem with oil coming out on steep downgrades but now i have to deal with it dripping all the time. If it was a drip here or there i would not mind but this blow-by oil is so bad that it has covered the underside of the truck. It will even get on the tailgate. I am trying to come up will an idea that will keep the oil in the engine and just let out the air. What we are thinking is removing the brass breather and welding in a plate with hole in it before the actual filter element. We are thinking that this will help keep the oil from running through the wire mesh thats in the breather. If this works for the most part then i will be happy but i am also thinking that i can run it to the exhaust or buy a catch can from summit that will separate the air and let it would and then return the oil to the oil pan. Summits part number sum-g1504. If you can come up with any more ideas please let me know.



thanks

Trey

 

[lmills]

I don't recommend installing it in the exhaust. The exhaust will cause a vacuum and actually pull more oil out of the motor. Trust me, we do this on race cars to help keep the rings seated. It can be avoided my installing the baffle plate that you mentioned, but it still happens. I would definitely consider installing the plate. Just not tapping into the exhaust

 

[Thomas]

Fleetguard Envirguard

 

[tpruitt]

Ok what if you used a check valve in the Exhaust idea. Also the fleet guard would work but it $200 and i think in down hill situations it would not be able to handle the 2 quarts of oil that comes out of the stock vent location.

 

[lmills]

the crankcase evacuation kits use a check valve. but you can only install the check valve one way. If you could actually install it the wrong way it would actually pressurize the crankcase and make the seals blow out or leak. Very bad idea. If you install it the right way then it pulls the vacuum which helps create a scavenging effect which seals the rings better. However the vacuum will pull the oil out of the motor. With the baffle plate installed under the connection at the valve cover it will lessen the problem, but it will still do it to some extent. Also I know this from experience with gas power cars. I am assuming the problem will be just as bad if not worse on these diesels. I am not sure if the exhaust velocity coming through the down pipe off of the turbo would worsen the problem or not.

 

[BigDaddy]

Originally posted by Thomas

Fleetguard Envirguard

Ditto