Oil contamination in i/c !!!!!
10 July 2002, 03:50 PM
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Moles Dad,
I think you can see it on the second picture within this link. It is from Jan Shim describing how to fit a catch tank, however I'd like someone here to verify that this is correct before I go ahead and fit it.
Anyone know where to get the filters from?
I think you can see it on the second picture within this link. It is from Jan Shim describing how to fit a catch tank, however I'd like someone here to verify that this is correct before I go ahead and fit it.
Anyone know where to get the filters from?
10 July 2002, 04:32 PM
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hi all, what benefits will a catch tank give? does it protect the MAF and make for a cleaner intake? Im sure ur local KnN supplier will be able to sort out a crankcase breather filter, they r bascially universal... just a small little cone 
Cheers
Cheers
10 July 2002, 04:40 PM
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I dont think it would protect the MAF, it goes into the system downstream of that, but there is a school of thought that it 'could' travel upstream in some circumstances.
I only want the benefit of not filling my fmic with oily residue.
K&N, yeah there are millions of little filters for this.
Cheers for now.
I only want the benefit of not filling my fmic with oily residue.
K&N, yeah there are millions of little filters for this.
Cheers for now.
10 July 2002, 04:51 PM
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Fivepint,
any oil present will degrade the quality of the fuel thus making for in-efficient combustion
Moles Dad,
from one of Jans posts on i-club
any oil present will degrade the quality of the fuel thus making for in-efficient combustion
Moles Dad,
One of the photos in the link shows the Cusco Oil Catch tank I once used in my WRX. The kit comes with mounting brackets and Cusco have desiged it to suit many Japanese performance vehicles EXCEPT the Subaru. Hardly surprising considering there is no ideal mounting location in the EJ20 engine compartment. If you do opt for a tank, I'd suggest a rectangular one that sits nicely in front of the export-spec battery (smaller vs Japan domestic spec that's twice the size). Then again, with a tank right in front, you'll have to pull hoses all the way from the crankcase/sump and Positive Crankcase Ventilation (right under the throttle body) to the front - pretty messy plumbing if you ask me.
The crankcase/sump vent has two outlets, one of them should be bunged while on the other you fit a fuel hose of 12mm or so (it's been a while). This goes to the catch tank. Then on both side of the engine you will find the valve/rocker cover vent. At the factory, each of the vents is joined underneath the intake manifold and Tee'd to a single hose going to the air filter inlet pipe. You would pull this off from the inlet pipe and attach to the catch can (remember to bung the inlet pipe).
It helps to have a catch can with three openings. From my description, two vents have been taken up. with the third opening you could vent it to air or stick a K&N filter or simply extend a hose from the vent to the ground. There are so many ways of doing an oil breather except mine is so cheap (no tanks). You will need to get a number of rubber bungs or various sizes, clamps and good quality hoses.
Go through the photos and familiarise yourself with the terms used: Crankcase/sump vents, PCV vent, Rocker covers etc .. then it makes sense. The job took around two hours as you have to have the IC removed, and deal with some difficult to reach areas.
TIP: there's a chance you may remove the transmission oil dipstick. PLEASE put a plastic bag or something over it .. the last thing you want is to accidentally drop a screw right into the filler pipe!!!
The crankcase/sump vent has two outlets, one of them should be bunged while on the other you fit a fuel hose of 12mm or so (it's been a while). This goes to the catch tank. Then on both side of the engine you will find the valve/rocker cover vent. At the factory, each of the vents is joined underneath the intake manifold and Tee'd to a single hose going to the air filter inlet pipe. You would pull this off from the inlet pipe and attach to the catch can (remember to bung the inlet pipe).
It helps to have a catch can with three openings. From my description, two vents have been taken up. with the third opening you could vent it to air or stick a K&N filter or simply extend a hose from the vent to the ground. There are so many ways of doing an oil breather except mine is so cheap (no tanks). You will need to get a number of rubber bungs or various sizes, clamps and good quality hoses.
Go through the photos and familiarise yourself with the terms used: Crankcase/sump vents, PCV vent, Rocker covers etc .. then it makes sense. The job took around two hours as you have to have the IC removed, and deal with some difficult to reach areas.
TIP: there's a chance you may remove the transmission oil dipstick. PLEASE put a plastic bag or something over it .. the last thing you want is to accidentally drop a screw right into the filler pipe!!!
11 July 2002, 07:47 AM
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I'm not sure if he has a site but he seems to post on i-club quite often. Try a search for catch tanks on i-club.
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07 October 2002, 03:34 PM
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I decided to do a few of those 'summer jobs' today as Ive got a bit of time on my hands.
Firstly I decided to change the 90deg rubber hose from the turbo onto the fmic pipework.
I had a few bits of silicone (sfs) hose from when Mole and I fitted the fmic, it was a bit of buggering about at the time so we decided it was to be a 'summer job'.
When I took off the hoses I discovered a fair bit of black oil residue inside the pipes, I would like to know where on the engine the crankcase breather is?
On the 'oh that was lucky' front, the rubber hose that I removed had been rubbing on the heater hose clip, (o/e part), and had a hole in the outer which didnt look like it was long for this world...oh that was lucky.
My plan is to fabricate my own 'catch tank' and do away with the re-circ type crank breather if I can get a bit of info on here as to where the thing is!
Thanks in advance, MD.
Edited to say...a photo or two would be good
[Edited by Moles Dad - 7/10/2002 3:37:45 PM]
Firstly I decided to change the 90deg rubber hose from the turbo onto the fmic pipework.
I had a few bits of silicone (sfs) hose from when Mole and I fitted the fmic, it was a bit of buggering about at the time so we decided it was to be a 'summer job'.
When I took off the hoses I discovered a fair bit of black oil residue inside the pipes, I would like to know where on the engine the crankcase breather is?
On the 'oh that was lucky' front, the rubber hose that I removed had been rubbing on the heater hose clip, (o/e part), and had a hole in the outer which didnt look like it was long for this world...oh that was lucky.
My plan is to fabricate my own 'catch tank' and do away with the re-circ type crank breather if I can get a bit of info on here as to where the thing is!
Thanks in advance, MD.
Edited to say...a photo or two would be good
[Edited by Moles Dad - 7/10/2002 3:37:45 PM]
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