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Old 19-06-19, 07:12 AM   #1
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Default fitting oil catch can ?

in the process of installing a oil catch can on my 2.0HDI , the breather from the cover goes to the oil filler tube. on some other diesels i`ve seen it connect up to the inlet of the turbo, should i connect it up this way and block the oil filler tube connection ?
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Old 19-06-19, 05:41 PM   #2
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Why are you fitting a catch can?. They belong on engine with open breathers, illegal on modern cars.

Roger.
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Old 19-06-19, 10:40 PM   #3
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After cleaning the crap out of the intake of my 406 2.0 HDi which is created by the combination of soot from the EGR and the oil mist from the crankcase ventilation system combining to form a horrible, sludgy mess (see image) I'm about to do the same thing.

I'm not familiar with the 2.0 diesel in the 307 but where you want to fit it is before the point where the crankcase ventilation enters the intake system. This will likely be somewhere after the MAF and air doser but before the turbo.

If you have access to Service Box you will be able to see the plumbing.

I have attached an image of where I would intersect the plumbing to install the catch can on my engine. There's not much room and I will have to use some right-angle connectors to attach the catch-can input and output pipes.

The old 2.1 turbo diesels had an oil catcher (not a very effective one) factory installed. I don't know why this was left off the 2.0 HDi
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screen-shot-2019-05-19-8.59.22-am.jpg   pugbreather.jpg   screen-shot-2019-05-19-8.58.42-am.jpg  

Last edited by Hermano; 20-06-19 at 09:56 PM. Reason: Add image?
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Old 20-06-19, 01:05 AM   #4
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Default oil catch cans

Quote:
Originally Posted by rustyroger View Post
Why are you fitting a catch can?. They belong on engine with open breathers, illegal on modern cars.

Roger.
im fitting it cause i want to.
and THEY ARE NOT ILLEGAL,...

so you havent done ANY illlegal mods to your car ?

mk
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Old 20-06-19, 05:49 AM   #5
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Hi...you can do what you like to your car but you are altering the emmisions system..but I think most of your oil issues come from the turbo oil 'mist' building up in the manifold and excessive soot from the egr mixing with oil mist caused by a badly running engine..if the engine is 'breathing' heavily then the engine is past its best....(ps..caps is regarded as shouting and is frowned on in this forum.)
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Old 20-06-19, 06:19 AM   #6
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Default oil catch can

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Originally Posted by noddy-hol View Post
Hi...you can do what you like to your car but you are altering the emmisions system..but I think most of your oil issues come from the turbo oil 'mist' building up in the manifold and excessive soot from the egr mixing with oil mist caused by a badly running engine..if the engine is 'breathing' heavily then the engine is past its best....(ps..caps is regarded as shouting and is frowned on in this forum.)

not altering emissions and it is legal : https://www.sa.gov.au/topics/driving...ket-components
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Old 20-06-19, 11:40 AM   #7
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I take it you are in South Africa then?
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Old 20-06-19, 01:38 PM   #8
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hell no, good old aussie..
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Old 20-06-19, 07:20 PM   #9
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Just that the link has SA at the title that's all!
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Old 20-06-19, 09:53 PM   #10
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Oil vapour catch-cans are standard equipment on most diesel truck engines because the higher crankcase pressures in diesel engines creates greater oil vapour in the ventilation system. Why they are not standard equipment on light diesel engines, particularly those fitted with EGR systems (poorly designed) is beyond me.

They also catch the small amount of water condensation in the crankcase so don't pour the contents of the catch-can back into the engine!

Some cautions though:
- do not allow the system to become clogged. If the crankcase pressure can't be released there will be consequences. You also don't want a diesel to start sucking oil into the intake it could create a diesel-runaway situation.
- the output of the catch-can is after the air filter and in front of the turbo, make sure nothing comes loose and gets pulled it - turbos don't like foreign objects in them.

I haven't done mine yet but I intend to and I've done a fair bit of research. I've come to the conclusion that a home-made or cheap one could be worse than none at all.
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