For those with "breathy" diesels and oily intercoolers

**isuzurover** · 17th April 2008, 08:04 PM

Originally Posted by Blknight.aus

What would be interesting to see is how it copes with massive over pressure by say a failed ring that usualy causes enough oil spray to lead to a run away diesel...

If it can stop that much oil for a prolonged preiod then Id fit one in a shot.

Yep it would, no problem. EDIT - see below for full answer...

**98-110** · 17th April 2008, 08:17 PM

Originally Posted by isuzurover

It does a number of things:
Keeps intercooler cleaner
Prolongs turbocharger life (collected soot/ash from oil mist kills turbos)

do these contaminants only come from the crankcase ventilation feed into the air supply or do they somehow feed backwards into the turbo?

**Blknight.aus** · 17th April 2008, 09:08 PM

nope its all drawn in from the crankcase ventilation system..

What landrovers have as standard, if serviced appropriately are adequate for a good engine but once they start wearing (the engine)or getting neglected (the ventilation system) your in a different kettle of fish.

Im still not convinced that it could deal with the amount of oil that a diesel can spit with a set of dying rings and Im not so sure that plumbing in its drain line below the level of the oil is a cool idea in the event of the crank case pressurizin for some wierd reason (say a well worn engine where blowby exceeds the engine ability to vent the case)

**B92 8NW** · 17th April 2008, 09:48 PM

You can remove the hose that goes into the air intake and just have it spew into the open air like my 1984 Kubota... except that it's not ethical, environmentally conscious, probably not legal and Mr. Garrett may come after you

.

**B92 8NW** · 17th April 2008, 09:51 PM

Originally Posted by Blknight.aus

nope its all drawn in from the crankcase ventilation system..

What landrovers have as standard, if serviced appropriately are adequate for a good engine but once they start wearing (the engine)or getting neglected (the ventilation system) your in a different kettle of fish.

Im still not convinced that it could deal with the amount of oil that a diesel can spit with a set of dying rings and Im not so sure that plumbing in its drain line below the level of the oil is a cool idea in the event of the crank case pressurizin for some wierd reason (say a well worn engine where blowby exceeds the engine ability to vent the case)

I think they recommend you stick a check valve on the oil return line, otherwise I agree, imagine the sump contents being pumped conveniently through a seperator straight to the intake

**sclarke** · 18th April 2008, 08:01 AM

Ive seen a few LR Diesels with an Oil Catch can, Cheap from Autobarn or sim, about $100 and you just need to empty it out every few thou... or maybe less

Saves an oily filter and intercooler.....

And Looks BLING

**MinniTheMoocha** · 18th April 2008, 09:02 AM

Originally Posted by sclarke

Ive seen a few LR Diesels with an Oil Catch can, Cheap from Autobarn or sim, about $100 and you just need to empty it out every few thou... or maybe less

Saves an oily filter and intercooler.....

And Looks BLING

Does this attach onto the existing filter or do you remove it and make a connection between the manifold and these oil catch cans?

Thanks

**isuzurover** · 18th April 2008, 11:04 AM

Originally Posted by sclarke

Ive seen a few LR Diesels with an Oil Catch can, Cheap from Autobarn or sim, about $100 and you just need to empty it out every few thou... or maybe less

Saves an oily filter and intercooler.....

And Looks BLING

Oil catch cans are generally not very efficient - you might get about 50% of the mass collected.

Also I am sure the price of the MANN+HUMMEL provent wouldn't work out more expensive.

**rick130** · 18th April 2008, 11:37 AM

the existing separator on 2/300tdi's is made by Mann apparently, although it doesn't have any coalescing media in it, that I'm aware of. (maybe it does ??)
If you look at it where it sits on the side of the head/rocker cover, one tube goes to the inlet tract, the bottom one drops into the sump.

**isuzurover** · 18th April 2008, 03:45 PM

Originally Posted by Blknight.aus

Im still not convinced that it could deal with the amount of oil that a diesel can spit with a set of dying rings and Im not so sure that plumbing in its drain line below the level of the oil is a cool idea in the event of the crank case pressurizin for some wierd reason (say a well worn engine where blowby exceeds the engine ability to vent the case)

The provent housing has a valve in the cap which pops open and vents to atmosphere if the pressure on the crankcase/provent inlet gets too high.

So in your example, if the engine blows a ring, the flow rate of gas into the crankcase increases, as does the pressure in the crankcase and the pressure drop across the filter. The valve then opens, and the result is you have an oily engine bay, but the motor is fine as none of the oil gets into the intake.

(as someone else mentioned, there is a one-way valve for the drain, or you can run it into a catch can and manually return it if worried).

It really is a pretty well designed bit of kit.

If you need further convincing I can take a pic of the valve

Originally Posted by rick130

the existing separator on 2/300tdi's is made by Mann apparently, although it doesn't have any coalescing media in it, that I'm aware of. (maybe it does ??)
If you look at it where it sits on the side of the head/rocker cover, one tube goes to the inlet tract, the bottom one drops into the sump.

The filter media in the provents would be more efficient than a K**&**N if you used it as an air filter...

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