why are catch cans expensive? what about this one?
TECH Senior Member
Joined: Apr 2002
Posts: 6,080
Likes: 17
From: So.Cal.
Originally Posted by 6spd
ya I bid 16 bucks and it still didn't break the reserve
joecar how long ago did you do that?
anyone else do something like Joe?
joecar how long ago did you do that?
anyone else do something like Joe?
I used to consume 1 qt oil every 1000 miles; now I consume less than 1/2 qt every 3000+ miles.
The rubber grommet that fits the 3/4" hole I drilled in the oil cap is GM 10198949.
Last edited by joecar; Feb 2, 2006 at 03:07 PM.
TECH Senior Member
Joined: Apr 2002
Posts: 6,080
Likes: 17
From: So.Cal.
Originally Posted by joecar
I drilled a 3/4" hole thru my oil cap, installed rubber grommet, pushed PCV into grommet, reversed flow thru PCV plastic tubes, plugged air nub near front of RHS valve cover;
when accelerating, alot of oil is pumped up pushrods into valve cover and g-force pushes it to rear of valve cover; oil cap is highest position on engine, so no liquid oil will be sucked (I peek past TB blade into manifold using flashlight, and no oil present).
I had to buy a rubber grommet.
when accelerating, alot of oil is pumped up pushrods into valve cover and g-force pushes it to rear of valve cover; oil cap is highest position on engine, so no liquid oil will be sucked (I peek past TB blade into manifold using flashlight, and no oil present).
I had to buy a rubber grommet.
Steps:
0. Remove PCV valve rubber connection from nub on intake manifold.
1. Undo nut on heat sink, and remove PCV valve and rubber holder from plastic PCV tube (hold tube, carefully twist holder off).
2. Extract PCV valve from rubber holder.
3. Remove oil cap, carefully center and drill 3/4" hole (holesaw or woodborer); drill from underside of cap.
4. Clean hole and insert rubber grommet; you may need to enlarge the hole a bit, use a round file.
5. Install oil cap.
6. Insert PCV valve into rubber grommet in oil cap.
7. Run some 5/16" ID fuel hose from nub on intake manifold to PCV valve in oil cap (go past front of head, form a loop going up, and then come down onto PCV valve).
8. Remove hose end from nub on RHS valve cover and insert on plastic PCV tube (use drop of oil to make hose go on easier).
9. Plug nub on RHS valve cover with 5/16" rubber cap (from local part store).
Keep parts taken off (rubber connection, rubber holder) just in case if required for smog test inspection.
Last edited by joecar; Mar 16, 2006 at 03:10 PM. Reason: Added more info...
TECH Senior Member
Joined: Apr 2002
Posts: 6,080
Likes: 17
From: So.Cal.
Pictures of my setup... Pictures of my PCV replumb...
Edit: Note that the oil cap is the highest point on engine,
and is toward front (acceleration pushes oil toward rear)
Edit: Note that the oil cap is the highest point on engine,
and is toward front (acceleration pushes oil toward rear)
Last edited by joecar; Mar 3, 2006 at 01:18 PM.
TECH Regular
Joined: Jan 2004
Posts: 496
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From: GARDEN GROVE, CA
I'm gonna do this above mod. I don't know why someone hasn't thought about it sooner. I have a AMW catch can and still get oil vapor into the intake. I have tried inline fuel filters after the can along with the new ls6 pcv and vertical pcv and none would stop the oil.
