DIY Oil Catch Can Installment Corolla 93 - 97 - Toyota Nation Forum : Toyota Car and Truck Forums

RinconRolla98 · 02-17-2010, 11:52 AM

Oil Catch Can takes the oily air that normally comes from the crankcase ventilation (either by the valve cover or from the PCV valve) and send it through the tank so the oil gets trapped in a cleanable canister (the can) while the air gas re-routed to the intake. The catch can is not a reservoir or oil supply. The gunk that accumulates in it should be cleaned out and disposed of properly. Highly recommended on fuel injection cars mounted between the PCV and intake. Without a catch-can, all that oil/carbon gunk builds-up on the tips of the injectors and can cause pre-igntion (pinging) over time.

One of the main things is to find a open spot for the catch can . It can be placed any where you just have to purchase longer hoses .

The oil catch can comes with hoses but I highly recomend you use from the auto parts store they sell them by the inch . For this purpose I used a hose for show but later on I changed the hose to the black hose from my local auto parts store .

It is best to get a oil catch can that you can remove the top and not a fully sealed one . This makes it easier to clean and in this photo I added some steel wool to soak up the extra oil . ( The reason I put the steel wool is cause with it being empty the oil will splash around and possibly re-enter into the intake . )

Once you find your location then you screw the bracket tightly enough so that the catch can doesn't get loose or rattles . You can add meduim lock tight on the screws if you like .

You remove the the hose as shown in the blue arrows and you add a breather on the valve cover and in the intake you just cut a piece of hose and put a screw in it so that you seal it off . This keeps the heat from the crankcase entering your intake and releasing out of the breather . The green arrow shows the PCV where you will hook up your hose for your oil catch can and on the other side is the bottom of the intake .

Then you connect your hose having the one from the PCV enter the catch can and the other hose going directly to the bottom of the intake .

Then in the end it will look like this . This is a very simple modification . This in no way adds performance but it keeps the fuel and the oil from mixing as it enters your intake . Which gives you better gas mileage , long lasting injectors especially in older running cars .

For more DIY : http://rinconrolla98.blogspot.com

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TI-CAVA · 02-17-2010, 01:46 PM

what's the breather for?

oil can get in it right? would it be better to seal that port?

topnotch · 02-17-2010, 03:30 PM

yea in my opinian i would seal it because that hose goes to the intake plenum which is also plugged... it dosnt go back into the intake system. so you might be changing or cleaning the breather very regularly.i left that one as it is and just hooked up the (OCC).

RinconRolla98 · 02-17-2010, 04:03 PM

I do have the tiny hole sealed as you can see in the photo blue arrow showing it and I explained it , the breather only releases the heat from the valve cover not oil , if you leave the hose connected then the heat will go into the intake , Dont know why you want heat in a intake if you have a CAI defeats the purpose of having cool air mixed with the fuel ... So the breather is put there seal the other end as in photo ... the oil only passes through the PCV thats where the catch can catches the oil .

***Kiwi-Corolla*** · 02-17-2010, 04:21 PM

Nice guide. I've been thinking about installing an oil catch can for quite some time, so this thread gives me extra incentive. I've found a couple online that I'm interested in so will probably be doing it in the very near future. Cheers for the write-up

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topnotch · 02-17-2010, 04:51 PM

Quote:

Originally Posted by Kiwi-Corolla

Nice guide. I've been thinking about installing an oil catch can for quite some time, so this thread gives me extra incentive. I've found a couple online that I'm interested in so will probably be doing it in the very near future. Cheers for the write-up

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lol yea knowleadge is power plus it is a healhty add on to the engine.so you whould definately get one kiwi.and to anyone else whos thinking about it.

Hook · 02-19-2010, 11:56 AM

So it's confirmed? The OCC goes between the PCV and the IM as opposed to between valve cover and TB?

What are the advantages/disadvantages of the two locations?

azcorolla · 02-21-2010, 02:10 PM

Nice write up. The steel wool is a good idea because also helps to catch oil moving through the OCC.

BTW, you can also make one of these out of spare parts. I've got one in the garage that I made for my Subaru from a metal 16 oz coffee cup and I saw one made out of a PB jar.
http://www.ultimatesubaru.org/forum/...ight=catch+can

itreflop117 · 01-15-2011, 12:29 PM

does anybody know the amount of mpg gain on a 96 corolla? and how regularly have to clean the oil catch can?

azcorolla · 01-16-2011, 06:26 PM

mileage - I doubt you'll see any improvement.

How often to clean? - depends on your motor, but if it's in relatively good running condition, just check it in 10,000 miles or so, see how it looks and adjust from there.

itreflop117 · 01-16-2011, 11:08 PM

thanks man, does anybody else have any other opinions?

demonics12 · 01-17-2011, 02:21 AM

would this considerably help on a 220k mile car? im burning oil like its going out of style.

***Kiwi-Corolla*** · 01-17-2011, 04:26 AM

Cheers for bumping this thread. I've been meaning to do this mod for quite some time, but have always put it on the back burner. After seeing this thread again, I bought an oil catch can online (exactly like the one in the DIY). I'll post pics once it's installed

topnotch · 01-17-2011, 03:23 PM

that would be cool kiwi, its a great add on to the engine i cleaned mine out in dec and ther was definately oil in the catch can when i release the plug at the bottom of the OCC which for a fact it really works, i could only imagine how the intake would have looked with that oil and gunk build up in it.....its a must have in my opinion

***Kiwi-Corolla*** · 01-17-2011, 04:33 PM

Quote:

Originally Posted by topnotch

that would be cool kiwi, its a great add on to the engine i cleaned mine out in dec and ther was definately oil in the catch can when i release the plug at the bottom of the OCC which for a fact it really works, i could only imagine how the intake would have looked with that oil and gunk build up in it.....its a must have in my opinion

That's great to hear. I'll probably remove the intake plenum sometime and clean out any deposits. Been meaning to spray paint it so might do that at the same time.

Quick question: What size breather filter did you use for the nipple on the valve cover? I measured the nipple and the opening of original hose and it's 6mm in diameter. However, the smallest breather filter I can find is 9mm. Did you use some sort of adapter or did you just tighten the hell out of a 9mm breather neck?