Oil Catch Can
Oil Catch Can

Here's the can, 951 OCC bought from Saikou Michi in the US.

Oil Catch Can 

Quality is excellent and service and delivery were great.
The advantages of this catch can are:
Lightweight
Internal design is every good
19mm inlet and outlet to match the 1.8t breather pipes
Not too bling!
Manufacturer Link  

Here's my diagram for fitment.  Blue is the catch can and fittings, red is the secondary air system which I plan to remove:

 This diagram took hours to draw

 

The bits:

1 19mm tee
1 19mm straight joiner
8 hose clips
6ft oil resistant hose
1 Saikou Michi 951 oil catch can
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X marks the spot!
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An attempt to show where the bottom connection leads to:
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Today I completed the catch can install. I used the following lengths of 19mm oil resistant pipe:

OCC <-> intake 500mm
OCC <-> T-piece 145mm
T-Piece <-> engine 210mm
T-Piece <-> downwards 290mm
Total length 1.145m

First job - tidy up the wire to the oil temp sensor and the red wire running down the side of the engine bay:
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Next - remove the factory breather pipes
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The pipes were in decent condition but a bit gunged up
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Next - get the most awkward connection done
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After that it was straight forward
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The engine cover needed a minor modification to go back in place
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All achieved with the minimum of bleeding and hardly any foul language
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This is the contents of the can after a couple of months:
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