Help on which catch can to buy.
Drifting
Joined: Feb 2007
Posts: 1,993
Likes: 7
From: LaPine Oregon
Read before making a choice...............
Read before making a choice:http://www.conceptualpolymer.com/ I run both a coalescing filter and an a catch can (derived from Dave68's concept). I fabricated/ adapted for application from two Binks units. Very satisfied
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
Can't vouch for any of the others
I fitted the EE catch can. As with anything from EE it's an amazing piece of engineering. Nice design, fits easily and does the job. Good price too. I'm very satisfied with mine.
I fitted the EE catch can. As with anything from EE it's an amazing piece of engineering. Nice design, fits easily and does the job. Good price too. I'm very satisfied with mine.
Melting Slicks
Joined: Sep 2003
Posts: 2,458
Likes: 105
From: Northville Michigan
Wolfman,
You may already be aware of this, but if you are not, you need to purchase and install two catch cans. One for the PCV line and the second for the line from the valve cover to the throttle body:
Both lines suck oil, with the valve cover to throttle body line being the biggest offender.
Thread Starter
Racer
Joined: Jul 2004
Posts: 474
Likes: 0
From: Pa
Wolfman,
You may already be aware of this, but if you are not, you need to purchase and install two catch cans. One for the PCV line and the second for the line from the valve cover to the throttle body:
Both lines suck oil, with the valve cover to throttle body line being the biggest offender.
You may already be aware of this, but if you are not, you need to purchase and install two catch cans. One for the PCV line and the second for the line from the valve cover to the throttle body:
Both lines suck oil, with the valve cover to throttle body line being the biggest offender.
Le Mans Master
Joined: Mar 2002
Posts: 5,955
Likes: 161
From: PNW
I see you also have a filtered breather on the oil filler cap. If you have that, then having a catch can in the fresh air line (valve cover to throttle body) doesn't make much sense as all the fresh air breathing will be through the filler cap breather since it will be the path of least resistance.
Wolfman,
You may already be aware of this, but if you are not, you need to purchase and install two catch cans. One for the PCV line and the second for the line from the valve cover to the throttle body:
Both lines suck oil, with the valve cover to throttle body line being the biggest offender.
You may already be aware of this, but if you are not, you need to purchase and install two catch cans. One for the PCV line and the second for the line from the valve cover to the throttle body:
Both lines suck oil, with the valve cover to throttle body line being the biggest offender.
Advanced
Joined: Jan 2007
Posts: 60
Likes: 0
From: Lake Worth FL
I have the CCA and am very happy with the product. Also, Chip from CCA was very informative on a number of C5 products and ideas. I agree with the 2 catch can comments, and will be installing another.
Regarding the breather, I was at Homestead road course last month coming through turn 3 & 4 when lots of oil dumped! I put the stock cap back on all is better!
Regarding the breather, I was at Homestead road course last month coming through turn 3 & 4 when lots of oil dumped! I put the stock cap back on all is better!
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Le Mans Master
Joined: Mar 2002
Posts: 5,955
Likes: 161
From: PNW
I doesn't make sense to have both a filler cap breather and a 2nd catch can ... it should be one or the other.
You were probably making a high G force LH turn too.
Someone needs to make a well baffled filler cap breather so it can separate raw oil from the vapors ... that is what a real breather does.
You were probably making a high G force LH turn too.
Someone needs to make a well baffled filler cap breather so it can separate raw oil from the vapors ... that is what a real breather does.I have the CCA and am very happy with the product. Also, Chip from CCA was very informative on a number of C5 products and ideas. I agree with the 2 catch can comments, and will be installing another.
Regarding the breather, I was at Homestead road course last month coming through turn 3 & 4 when lots of oil dumped! I put the stock cap back on all is better!
Regarding the breather, I was at Homestead road course last month coming through turn 3 & 4 when lots of oil dumped! I put the stock cap back on all is better!
Race Director
Joined: Oct 2002
Posts: 16,477
Likes: 26
From: Gone
CI 6-7-8-9-10 Veteran
St. Jude Donor '03
Just ditch the TB-to-valvecover inlet line completely if you're going to use a breather filter....what many do with a 90mm TB conversion anyways, since it has no PCV inlet line provision.
I'm also not sure introducing a source of unmetered air on a MAF tuned n/a application is a good idea. (which is exactly what the oil cap breather does anytime there's significant manifold vacuum).
Melting Slicks
Joined: Feb 2006
Posts: 2,172
Likes: 104
From: Des Moines Iowa
Read before making a choice:http://www.conceptualpolymer.com/ I run both a coalescing filter and an a catch can (derived from Dave68's concept). I fabricated/ adapted for application from two Binks units. Very satisfied
Melting Slicks
Joined: Sep 2003
Posts: 2,458
Likes: 105
From: Northville Michigan
I see you also have a filtered breather on the oil filler cap. If you have that, then having a catch can in the fresh air line (valve cover to throttle body) doesn't make much sense as all the fresh air breathing will be through the filler cap breather since it will be the path of least resistance.
That answer would be correct if the don't spend much time on a road course.
But, if you do spend significant time on a road race course, you know that you still pull oil through the valve cover to throttle body hose even with a breather cap. And, that in addition to the two catch cans you need to replace your standard pushrods with Smith Brothers oil flow restricting pushrods to completely eliminate pulling oil into the intake manifold.
Last edited by Pumba; Dec 27, 2007 at 05:48 PM.
Burning Brakes
Joined: Mar 2003
Posts: 1,156
Likes: 2
From: Arlington VA
I installed the Elite Engineering unit on mine. I have been nothing but impressed with all EEs products thus far. That said, I think the CCA unit looks like a high quality piece. I do not think you can go wrong with either one. I would go for the one that cost the least. Good luck with it.
Race Director
Joined: Oct 2002
Posts: 16,477
Likes: 26
From: Gone
CI 6-7-8-9-10 Veteran
St. Jude Donor '03
That answer would be correct if the don't spend much time on a road course.
But, if you do spend significant time on a road race course, you know that you still pull oil through the valve cover to throttle body hose even with a breather cap. And, that in addition to the two catch cans you need to replace your standard pushrods with Smith Brothers oil flow restricting pushrods to completely eliminate pulling oil into the intake manifold.
But, if you do spend significant time on a road race course, you know that you still pull oil through the valve cover to throttle body hose even with a breather cap. And, that in addition to the two catch cans you need to replace your standard pushrods with Smith Brothers oil flow restricting pushrods to completely eliminate pulling oil into the intake manifold.
Once you added the oil cap breather, that instantly became your new source of inlet air for the PCV system.
At that point, the TB to valvecover line became completely useless, other than becoming a new potential EXIT point for oil and crankcase vapors under low vac/high rpm conditions, which although it happens stock too, this reversal of flow is even more likely to occur due to the alternate source of inllet air now being present (the oil cap breather).
Instead of trying to prevent ways of oil from entering the intake, you essentially chose to give it two paths. Upon realizing the effects of this, instead of eliminating one unnecessary path, you chose to just filter it.
Also, if you simply drill out the drainholes in your lifter guides, you will find expensive pushrods are not needed to avoid oil backing up in the valve covers.
Instead of restricting the flow of oil TO the parts needing it, why not just increase the drainage capacity of oil away from that area?
Instructor
Joined: Mar 2006
Posts: 178
Likes: 0
