Oil Catch Can Question...
Melting Slicks
Joined: Oct 2006
Posts: 2,236
Likes: 0
From: Suisun City Ca
Le Mans Master
Joined: Dec 2003
Posts: 5,561
Likes: 448
From: Atlanta metro Ga.
That's true!! 
I de-installed my E.E. catch-can to bend the bracket, effectively solving the "pinched water hose" issue (worked out great BTW, the can now hovers between the two hoses, with about 1/2" clearance, perfect); when I checked the inside of the intake tube, sure enough it was damp with oil, BUT I had quite a bit in the bottom of the can.
So not perfect, but a lot better than nothing (IF you don't want to eliminate the PCV system altogether, or course).
I de-installed my E.E. catch-can to bend the bracket, effectively solving the "pinched water hose" issue (worked out great BTW, the can now hovers between the two hoses, with about 1/2" clearance, perfect); when I checked the inside of the intake tube, sure enough it was damp with oil, BUT I had quite a bit in the bottom of the can.
So not perfect, but a lot better than nothing (IF you don't want to eliminate the PCV system altogether, or course).
Team Owner
Joined: May 2004
Posts: 26,345
Likes: 232
From: SoCal
That's true!!
I de-installed my E.E. catch-can to bend the bracket, effectively solving the "pinched water hose" issue (worked out great BTW, the can now hovers between the two hoses, with about 1/2" clearance, perfect); when I checked the inside of the intake tube, sure enough it was damp with oil, BUT I had quite a bit in the bottom of the can.
So not perfect, but a lot better than nothing (IF you don't want to eliminate the PCV system altogether, or course).
I de-installed my E.E. catch-can to bend the bracket, effectively solving the "pinched water hose" issue (worked out great BTW, the can now hovers between the two hoses, with about 1/2" clearance, perfect); when I checked the inside of the intake tube, sure enough it was damp with oil, BUT I had quite a bit in the bottom of the can.
So not perfect, but a lot better than nothing (IF you don't want to eliminate the PCV system altogether, or course).
DH
Le Mans Master
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
So DH, you saying install a paper fuel filter between coming out of the catch can into the TB and that should trap the mositure that may get pass the catch can? Sounds good to me, worth a try.
BTW, I removed mt "T" line hoses and went with a the hose from the PVC on the passenger side to the top of the catch can and placed the hose coming from the valve cover to the TB.
SLPRC5
BTW, I removed mt "T" line hoses and went with a the hose from the PVC on the passenger side to the top of the catch can and placed the hose coming from the valve cover to the TB.
SLPRC5
Race Director
Joined: Dec 2000
Posts: 19,304
Likes: 85
From: San Diego CA
Sorry, I have to put this up every 50th catch can thread or so.
Seriously, the only way to eliminate all liquid in the intake manifold is to vent the crankcase to the atmosphere.
The liquid in the intake consists of two components:
Oil, which is in droplet form, and can be mostly eliminated with a coalescing filter.
True vapor, which can only be distilled or condensed.
No matter how good your catch can, it will run warm, and most vapor will go through. Vapor from blowby (unburned fuel) will bypass it and condense on the cooler intake manifold surfaces. Some of what acculates in the intake is oil, and some is combustion blowby condensate.
Eliminating the oil mist will not keep your intake from get wet.
Seriously, the only way to eliminate all liquid in the intake manifold is to vent the crankcase to the atmosphere.
The liquid in the intake consists of two components:
Oil, which is in droplet form, and can be mostly eliminated with a coalescing filter.
True vapor, which can only be distilled or condensed.
No matter how good your catch can, it will run warm, and most vapor will go through. Vapor from blowby (unburned fuel) will bypass it and condense on the cooler intake manifold surfaces. Some of what acculates in the intake is oil, and some is combustion blowby condensate.
Eliminating the oil mist will not keep your intake from get wet.
http://www.conceptualpolymer.com/corvette_c5_corner.htm
Dave
Melting Slicks
Joined: Aug 2005
Posts: 3,398
Likes: 2
Run a paper filter after the can and it will be restrict flow real quick when it gets moist or oily and be just liek a smashed hose.. No thanks. You want perfect get rid of the pcv system all together like I did on 2 of my other race cars.
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Verdad Gallardo
Le Mans Master
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
On the other hand; how do you eliminate the OVC and will it pass a visual at a smog test?
Team Owner
Joined: May 2004
Posts: 26,345
Likes: 232
From: SoCal
DH
Team Owner
Joined: May 2004
Posts: 26,345
Likes: 232
From: SoCal
This is why the best mounting position for a true coalescing filter is in the coolest area. And I've mentioned a few times that stainless steel mesh is not the best solution when it's oil and water aerosols that you are trying to trap. Get a true coalescing filter that is designed for low flow/low pressure and forget about paper filters. You can find more in-depth info here:
http://www.conceptualpolymer.com/corvette_c5_corner.htm
Dave
http://www.conceptualpolymer.com/corvette_c5_corner.htm
Dave
If you are done with your shake down testing please advise. Maybe you can PM me some $$$ figures and I will try it out on my setup
DH
