Catch Can Question
Safety Car
Joined: Nov 2011
Posts: 3,714
Likes: 343
From: Norman OK
Man you are going to catch heck for posting this, there has to be at least 30 threads since I got on this site about them.
I run one on my car, but you will get about 50 replies how people say not to run them. Do some research and then decide for yourself.
I run one on my car, but you will get about 50 replies how people say not to run them. Do some research and then decide for yourself.
CF Senior Member
Joined: Feb 2006
Posts: 23,313
Likes: 25
From: Tucson Arizona
IMO a catch-can is not necessary for normal street driving. I do, however, think a catch-can is beneficial for track use. I use a catch-can as my car is driven exclusively on the track with lots of high RPM/wide open throttle driving. While IMO not necessary for street use you may find the benefits worthwhile. For more information check out the Elite Engineering website.
Safety Car
Joined: Nov 2011
Posts: 3,714
Likes: 343
From: Norman OK
See, I already disagree with what Wayne posted...lol
I have ran a catch can on all of my GM performance cars and on average every 5000 miles I pull about 2-4oz of oil out of the can that would of have went into the intake and coated the backside of the throttle body, inside of the intake and the backside of the intake valves.
The oil also skews the A/F ratio as well and can help detonation to happen or be more prone.
It is simple insurance in my eyes, belive me you dont want to have to pull the TB down the road to clean the grime from the backside of it because you notice the throttle blade sticking.
I have ran a catch can on all of my GM performance cars and on average every 5000 miles I pull about 2-4oz of oil out of the can that would of have went into the intake and coated the backside of the throttle body, inside of the intake and the backside of the intake valves.
The oil also skews the A/F ratio as well and can help detonation to happen or be more prone.
It is simple insurance in my eyes, belive me you dont want to have to pull the TB down the road to clean the grime from the backside of it because you notice the throttle blade sticking.
Le Mans Master
Joined: Jan 2009
Posts: 6,113
Likes: 8
From: Pottsboro; Sometimes Dallas Texas
St. Jude Donor '12
See, I already disagree with what Wayne posted...lol
I have ran a catch can on all of my GM performance cars and on average every 5000 miles I pull about 2-4oz of oil out of the can that would of have went into the intake and coated the backside of the throttle body, inside of the intake and the backside of the intake valves.
The oil also skews the A/F ratio as well and can help detonation to happen or be more prone.
It is simple insurance in my eyes, belive me you dont want to have to pull the TB down the road to clean the grime from the backside of it because you notice the throttle blade sticking.
I have ran a catch can on all of my GM performance cars and on average every 5000 miles I pull about 2-4oz of oil out of the can that would of have went into the intake and coated the backside of the throttle body, inside of the intake and the backside of the intake valves.
The oil also skews the A/F ratio as well and can help detonation to happen or be more prone.
It is simple insurance in my eyes, belive me you dont want to have to pull the TB down the road to clean the grime from the backside of it because you notice the throttle blade sticking.
with the bold above, I do not know that the A/F ratio's are skewed by it. I would think if it were the case, GM would add cans to all these cars.I run one and experience the SAME as bold above. There is oil in the can that WOULD have made it's way into the intake.
However, I do NOT run them on my regular dd vehicles. I have a Yukon which I bought new and now has 94,500 miles on it. It runs almost as smooth as it did the day I bought it new. But, the engine in it does NOT turn the rpm's the LS7 does or make near the power the LS7 does either.
So, for performance engines I think the cans are a plus. For any other it's a waste.
Race Director
Joined: May 2006
Posts: 12,973
Likes: 1,020
From: SOFLA
2016 Corvette of Year
2015 C6 of Year Finalist
if you want to run one then do, I think the reason GM would never put one on a car is, you need to empty it. I don't see that happening.
" I need to empty my what?"
I could see the daily occurance of threads here,
"My maintenace schedule says I need to empty my catch can, WTF is a catch can, and where is it?"
They are cheap to buy..... I have had one in my garage for a year and still haven't gotten around to putting it on, oh well
" I need to empty my what?"
I could see the daily occurance of threads here,
"My maintenace schedule says I need to empty my catch can, WTF is a catch can, and where is it?"
They are cheap to buy..... I have had one in my garage for a year and still haven't gotten around to putting it on, oh well
Safety Car
Joined: Nov 2011
Posts: 3,714
Likes: 343
From: Norman OK
Exactly Andrew, that is the exact reason I came to as why GM will not put one on the cars. People will not empty them, next thing you know the can is full and then liquid oil is running into the intake and then into the combustion chamber potentially causing a hydrolock situation.
Thread Starter
Instructor
Joined: Jun 2010
Posts: 215
Likes: 4
From: Parker Colorado
Thanks folks that answered my question.. As usual this forum has opinions and answers for about everything..
Last edited by trying2seek; Apr 25, 2012 at 04:43 PM. Reason: misspelled word
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