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installation and function of "oil catch can"

17511 Views 12 Replies 6 Participants Last post by  ERROLAE92
hello! :hi::thumbsup::rockon:

:help:
:dunno::facepalm:

I like to know what the function of the oil catch can.

if they had pictures, installed on a 4AGE 16v.

it would be appreciated

:thanks::thanks:
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· Registered
1992 Toyota Corolla
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I have an oil catch can installed on my 92 corolla, but I have a 16v 4AFE.

The purpose is the same, it keeps oil that would normally come out of the PCV valve on the valve cover from going into the intake. On a stock car there is a hose connecting the PCV to the intake. An oil catch can goes in between these and allows the gases and vaccuum to come out of the valve cover, through the PCV valve, then travel through the hoses into the oil catch can where the oil stays, and the clean vaccuum air continues out and into your intake.

I installed one on my car because I had oil filling up my IACV in my throttle body, and generally gunking up the inside of my intake manifold. Ever since installing the catch can my throttle body and intake manifold have been spotless. Its supposed to improve fuel efficiency as well by reducing oil getting on the spark plugs inside the combustion chamber, but thats a long shot.

You can see it a little bit here. Sorry its an old picture when I first got the car. Was one of the first things I did to it. The catch can is to the left back of the intake manifold in the picture. You can see the hoses coming from the PCV and intake manifold going to the catch can.

 

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1,017 Posts
function of a catch can is to just catch the oil when you corner hard, so it wont be burnt up. my buddy fills his catch can at track events on hi rwd 4age.

installation is more or less what this bad drawing shows.

when the catch can works it means no blue smoke, but once it fills up you gotta becareful cause oil can blow your distributor seal.

 

· Dave's
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2,601 Posts
Many years ago I purchased a car with so much blowby the air filter would clog in about 6 months. (Instead of a draft tube, it had a hose from the valve cover breather to the air filter cover.) So I took a Renuzit air freshener and gutted it, glued in fittings for the 'cut' hose to fit both ends and installed a foam pad inside. Every few few weeks I would pop open the 'can' and dump any oil and squeeze out the foam. Worked great. 1977 on a '68 Dodge. Maybe I should have had it patented. :lol:
 

· Registered
1992 Toyota Corolla
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173 Posts
To keep the oil from burning up? Im so confused. REALLY confused why you would fill the catch can with oil which could potentially force oil out of the return line and into the intake manifold would could really mess things up in a large amount.
 

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1,017 Posts
you dont fill it, it fills up from the constant G force of hard cornering. i personally dont use one. i have buddies that also use them on their turbocharged cars cause if they dont the turbo sucks in a bunch of oil and burns it.

why would you if it cause more problems, lol your supposed to keep an eye on it, but some odd reason my buddy's ae86 likes to dump oil into the catch can. onces it fills up all the crank case pressure has nowhere to go.
 

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toyota corolla 1988
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296 Posts
Discussion Starter · #13 ·
The catch can looks good. Did you buy it? what model is it?

I just noticed your MAF (air velocity meter). Do you run without an air filter? :O
I do not remember the brand hehe:facepalm::dunno:

comes from Ebay:dunno:

:thumbsup:
about MAF, oh no no no, it happens that I be doing tests with / without air filter.

has a K & N
 
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