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Thread: oil catch tanks?

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    Regular Member Caveman_nige's Avatar
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    Year : 2014

    Question oil catch tanks?

    I see these oil catch tanks all over ebay, what are they for, petrol or diesel engines or both? what is their purpose and what are the benefits?

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    Regular Member rushy's Avatar
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    Very beneficial for turbo applications mate. The cam had a breather on it, this gets put back into the intake. Any oil vapour in the gas burnt off but can coat the intake track in oil. A catch can "catches" the oil vapour and only lets the gas into the intake.

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    Regular Member Caveman_nige's Avatar
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    hmmm i wonder... it can only help prolong engine life and performance then... I just wonder where it would be connected to on my engine... Why do these not get factory fitted if they are beneficial?

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    Regular Member rushy's Avatar
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    There is a separator in the system mate, but its not that good. If you look into your TB you'll be able to see oil, this is from the breather pipe.

    Do you have a port on your cam cover like this?


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    Regular Member Caveman_nige's Avatar
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    me see another mod coming here....

    well looking at this pic posted by Jezzy, i think i see one near the turbo under the air intake pipe..


    Z20NET REAR VIEW

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    Regular Member rushy's Avatar
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    If that pipe is coming from the cam cover then thats it. You need a pipe from that going DOWN to the catch tank, then back UP to where the original fits. Bulkhead could be a good fixing point but it must be accessible so it can be emptied. I'd imagian it goes into the intake pipe before the turbo, as it needs neg pressure from the intake to work.


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    Regular Member Caveman_nige's Avatar
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    thanks for the info, I am going to have a real look into this, do you have one? I see on the bay that some of these tanks seem to have little air filter on top, is that significant or just gimmicky to make them appeal to a certain crowd..?

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    I read somewhere on here that it has an impact on MOTs...? Anyone know more about this?

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    Quote Originally Posted by rushy View Post
    If that pipe is coming from the cam cover then thats it. You need a pipe from that going DOWN to the catch tank, then back UP to where the original fits. Bulkhead could be a good fixing point but it must be accessible so it can be emptied. I'd imagian it goes into the intake pipe before the turbo, as it needs neg pressure from the intake to work.

    Where the photo has been circled,cut into the pipe there and run a pipe to the catch tank inlet side from the cam cover,then run another pipe back to the other end of the original pipe from the out side of the catch tank.There is a filter on the top of the tank,this is paper with a wire reinforced cover to protect it.I run a pipe from this outlet,down the engine bay and along the line of the exhaust pipe,and secured it towards the rear end of the car with the filter on the end.I've got a 1.9 CDTI,so the system is slightly different but the principle is the same,(I think!!!).It's been fine and I've had no problems whatsoever with it. FELIXX.

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    Regular Member Caveman_nige's Avatar
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    Thankks Felixx, so i just 'T' off the pipe into the tank and 'T' back into the same pipe further along..?

    Not heard anything like so far Jezzy.. TBH there is very little info these and none on here it seems yet it could possibly be one of the most worthwhile mods to engine an owner could do..

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