General oil catch can or air oil separater for gas engine

[84-4runner]

oil catch can or air oil separater for gas engine. Doesn't give any more hp but keeps you from losing what you have.
have them on my tacoma and jeep rubicon. they sit between your pvc valve and where it dumps back into the intake.
It is an oily mist that degrades your gasoline rating.
On a turbo engine which has higher crankcase pressures it is even more of a problem.
I have sure there are some kits around for the BMW sports cars since the go fast crowd doesn't want to lose any
HP. So has anyone seen a kit. It should just swap on in.

 

[84-4runner]

found one that may fit

BMS Oil Catch Can for G Chassis Gen 2 B58 BMW M240 M340 M440​

but contacted them to see it will.
an easier install compared to the tacoma and the jeep rubicon

 

[TheDocAUS]

Here is the information on the diesel model separator from Hengst here.

Is there a petrol version from Hengst?

View: https://youtu.be/eBjkglPYnm0

This suggests diesel only, but others models do exist for Petrol motors (like Mercedes). Or you go generic like Provent.

 

[84-4runner]

thought the diesel engine had one, but need one for the gas engine. found a company who makes them
for the sports cars so we are exchanging pictures to figure out the fit

 

[Jiman01]

I think I remember reading that the B58 in the Grenadier has some variation of a oil catch can…its been a while so I could definitely not be remembering it right.

 

[TheDocAUS]

I think I remember reading that the B58 in the Grenadier has some variation of a oil catch can…its been a while so I could definitely not be remembering it right.

A quick internet shows there are third party options, most I saw were from motorsport stores. But does an INEOS engine bay have the room in the right places?

 

[Jiman01]

A quick internet shows there are third party options, most I saw were from motorsport stores. But does an INEOS engine bay have the room in the right places?

What I thought I read was that the B58 version in the Grenadier already had something that acted to collect oil mist vapors, similar to a an oil catch can, and reintroduce it back into the engine.

 

[TheDocAUS]

What I thought I read was that the B58 version in the Grenadier already had something that acted to collect oil mist vapors, similar to a an oil catch can, and reintroduce it back into the engine.

I do not know about the Petrol models (in any country), but the AU diesel models do have the Hengst.

 

[Disco Dave]

What I thought I read was that the B58 version in the Grenadier already had something that acted to collect oil mist vapors, similar to a an oil catch can, and reintroduce it back into the engine.

I believe the “catch can” in the B58TU, is incorporated into the valve cover.
Also, changing your oil more often will reduce the average amount of carbon in the oil, and consequently reduce valve carbon deposits.

 

[Tazzieman]

Cado weighs in
Catch cans yay or nay

 

[landmannnn]

Oil catch cans are widely used in Motorsport. The main reason is avoid water vapour entering the combustion chamber and reducing the fuel octane rating. These engines are of course run a full throttle, tuned specifically for the available fuel and often running high boost.
These catch cans are drained after every session and need to be positioned to get cool air to condense the water vapour.

For the average use case a catch can isn't required unless you are running a high performance motor at high throttle most of the time.Technically illegal in many countries too.

Moving on to diesels, a catch can might be considered to keep the intake clean and prevent sooting. However, the EGR system unless deleted introduces far more soot than an oil mist from the crankcase.

 

[Tinerfeño]

Moving on to diesels, a catch can might be considered to keep the intake clean and prevent sooting. However, the EGR system unless deleted introduces far more soot than an oil mist from the crankcase.

Exhaust gas coolers have prevented this. They have been used for more than 20 years. It is not the engine oil mist nor the carbon deposits from exhaust that used to block intake manifolds, but high temparature exhaust gas that burned the oil mist to manifold.

 

[84-4runner]

well we will see what thing look like. have parts coming in and I may have to make
a custom bracket so in a few more days

 

[84-4runner]

I believe the “catch can” in the B58TU, is incorporated into the valve cover.
Also, changing your oil more often will reduce the average amount of carbon in the oil, and consequently reduce valve carbon deposits.

that is the PVC valve

 

[CountyV8]

well we will see what thing look like. have parts coming in and I may have to make
a custom bracket so in a few more days

The B58TU in my Grenadier has the hengst oil separator so your wasting your cash on a catch can the powered Hengest does it.

 

[84-4runner]

The B58TU in my Grenadier has the hengst oil separator so your wasting your cash on a catch can the powered Hengest does it.

where is it locacted. Do you have picture of it. I know the diesel have one but not the gas engine

 

[Disco Dave]

that is the PVC valve

It is more than a PVC valve

View: https://youtu.be/W93Mzk0WDyg?si=FzXnynKN0wzINCuT

 

[84-4runner]

a short history of positive crank case pressure. first due to leakage past the piston rings there is positive pressure in the engine. In the old days
1960s and earlier there was a can or cap with metal mesh guts that would try to separate some of the oil in the vapor and return it to the valve
cover and back to the engine. The pressure was vented into the atmosphere. Then in the 70s there was a PCV valve on the valve cover with
would vent the air/oil mixture to somewhere under the carburetor. Later there was an assortment of ways that dumped the air/oil mixture into
the intake. Now adays the PVC valve is routed some where in front of the throttle body. This can be sent by looking at you throttle body and
you will see and oily residue. Changing your oil does not help.
So I have installed an oil catch can and will drive around with it on and see if it does any good. Since actions speak louder than words I will
see what if anything happens.

 

[84-4runner]

just have to finish the bracket and it is done. the engine cover fits as stock.

 

[CountyV8]

It already has an Hengst disk type centrifugal catch can .
As has been documented elsewhere look on their website for function.