Anyone fitted a catch-can to a puma?

But the filter doesn't need to handle HP... it needs to handle flow of blow-by gases. It's not like a gearbox or an axle that shears when it sees too much power* (HP, kW etc). It will restrict flow, and force oil out past seals, out the dipstick or past a gasket.

How does blow-by correlate with HP?
I imagine it would rise with RPM.
I also imagine that a small 2.2 or 2.4L diesel with anything more than 100LPM blow-by flow would be in a bad state of affairs.


*yeah, if we are splitting hairs it's probably torque that breaks gearboxes and axles, but hey, we are talking in laymans terms here

Does anyone worry about this with the D4's at all?

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Originally Posted by Chops

Does anyone worry about this with the D4's at all?

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I haven't. But I did sort EGR

I don't think I could find some real estate for the unit without some serious fabrication work..

Toxic. I pondered this also...
However there must be a good reason for it.

I was pondering if it's the cyclic displacement and blow by or just an expected blow by based on displacement..

Either way - the 200 fits in the bay easily enough that I will just be going down that track eventually.

The piston rings press against the ring lands and are pushed into the bores as the combustion gases attempt to squeeze their way past the piston to the sump. There is a lot going on in those 3 little bits of spring steel (and the oil control ring)... but like you, it would be interesting to know how they give each unit its rating.

I suppose like anything, if you've got the space for one, go for it. Having the extra headroom of a 200 series provent can't be a bad thing.

Would there be a number of Km's driven where there would be little point in installing a catch can? ie after a certain age is the engine is too worn to bother?

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Originally Posted by alittlebitconcerned

Would there be a number of Km's driven where there would be little point in installing a catch can? ie after a certain age is the engine is too worn to bother?

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Im going to call the M+H rep again tomorrow to find out why/how the kw vs displacement determines the sizing.

Regarding kms, the rep advised that the intercooler, inlet manifold and egr should be thoroughly cleaned prior to fitting on older (or any) engines. There is a benefit on older engines because they typically suffer more blow by and reduce the performance of the intercooler and clog the EGR further.
If the motor is suffering enough that a rebuild is needed the Provent wont be of any benefit.

Just spoke with James at Asgard and same reply as before regarding test vehicle,but he has another vehicle lined up for August sometime.Offered my vehicle if it falls through.He supplies the 200 pro-vent in the kit.

Spoke again to M+H rep today for some clarity. Originally the Provent was designed for stationary motors eg generators and compressors. There are some calculations and equations based on typical RPM and displacement which results in a typical Kw and calculated blow by.
Kw was/is the easiest way to determine the selection, however it is ultimately the blow by which matters.
Im assured a 100 will cope with the TD5 and ultimately Puma motors just fine despite potential Kw output.
However I shall be purchasing the 200 as the Rep mentioned at higher kms 400 ish , the 100 wont be adequate.
My motor has only 49kms on it but don't want to be upgrading Provent later in life when the 200 will cope til the motor ultimately dies.
here is link for general info [ame]http://www.mann-hummel.com.au/FileUploads_Misc/Proventserviceman.pdf[/ame]

I really want one so I can fit my new intercooler but seeing as I am terrible at manufacturing things like brackets, I'm waiting with bated breath for a kit form

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