Turboman · Jun 15, 2017

The Mad Hat Man said:
Is there a filter in the normal hose? I think there needs to be some form of baffle/restriction in the catch tank. It might be worth stuffing it with loose wire wool to act as a trap.

No. It is a straight through hose. And some Ninetys have two, one off the rocker cap, one off a spigot on the back of the rocker cover, that one actually pours oil down the hose on steep upslopes, and then there is a tube(straight through), round the back of the engine, and into the intake. That is a really bad setup, the single hose is better.

The wire wool might be ok, but I think mounting the can lower down in the engine bay would help, I don't usually see them as high up as that.

The Mad Hat Man · Jun 15, 2017

Please see edited post

Turboman · Jun 15, 2017

The Mad Hat Man said:
View attachment 125614

Is there a filter in the normal hose? I think there needs to be some form of baffle/restriction in the catch tank. It might be worth stuffing it with loose wire wool to act as a trap.

On the cans I see, the intake tube goes to the bottom of the can, the outlet one goes right off the top, which would have much the same effect!

The Mad Hat Man · Jun 15, 2017

Turboman said:
On the cans I see, the intake tube goes to the bottom of the can, the outlet one goes right off the top, which would have much the same effect!

I agree. We don't know the setup in the OPs. Anything to slow down the airflow will allow more oil to settle out.

The Mad Hat Man · Jun 15, 2017

Another option...

A very useful read - https://www.enginebasics.com/Engine Basics Root Folder/Catch_Can.html

Turboman · Jun 15, 2017

The Mad Hat Man said:
Another option...

View attachment 125615

A very useful read - https://www.enginebasics.com/Engine Basics Root Folder/Catch_Can.html

That set-up looks much better. Something on that design, mounted low down in the engine bay, would be optimal.

aljez · Jun 15, 2017

Just thought I would let you all know I dismantled the catch can no baffle put some wire wool inside fitted it all back test run no blue smoke.thanks for all your help guys.

The Mad Hat Man · Jun 15, 2017

aljez said:
Just thought I would let you all know I dismantled the catch can no baffle put some wire wool inside fitted it all back test run no blue smoke.thanks for all your help guys.

That has proved the system. Now you need to go back to the manufacturer and explain the problem and solution. See if they can supply a filter unit.
Be wary of ingesting the wire wool.

Turboman

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The Mad Hat Man

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Turboman

Mab An Gov

The Mad Hat Man

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Turboman

Mab An Gov

aljez

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The Mad Hat Man

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