Open crankcase ventilation

[Fabulous50s]

In older diesels, is there any valve or Reed in the valve cover for the crankcase vent?

Or is there just a baffle and an open pipe? N/A, IDI 3 cyl tractor in question. New ones use a rubber diaphram as a CCV into the intake. Can I just vent it to the atmosphere or is there actually a mechanical benefit to CCV. I'd think not.

Is there ever any possibility for contamination to be drawn in? I wouldn't think so as there is no vacuum in diesels, but I'm still wondering.

 

[56Cummins]

On old engines there is plenty of pressure blowing out while it's running. Mine is oily, so I doubt anything will get to the engine through the downward facing 14" long breather tube when it's not running.

 

[Fabulous50s]

On my old....late 90s tractor the same yanmar 3 cyl diesel was vented to the atmosphere. I sold it and bought a new tractor which has a very similar yanmar engine but has a different injection pump and vents the crankcase into the intake.

I know this is just for emission compliance, is there a downside to burning crankcase fumes or should I simply vent it to the atmosphere? I want this to last 5,000 hours like my old one did.

 

[tnt_motorsports]

On my old....late 90s tractor the same yanmar 3 cyl diesel was vented to the atmosphere. I sold it and bought a new tractor which has a very similar yanmar engine but has a different injection pump and vents the crankcase into the intake.

I know this is just for emission compliance, is there a downside to burning crankcase fumes or should I simply vent it to the atmosphere? I want this to last 5,000 hours like my old one did.

How new is new? If it is electronic then it will throw a DTC if you vent the CCV to atmosphere. The CCV hose going into the intake sucks because your turbo gets coated in oil residue.

Just my $0.02

 

[Fabulous50s]

2021

 

[Fabulous50s]

How new is new? If it is electronic then it will throw a DTC if you vent the CCV to atmosphere. The CCV hose going into the intake sucks because your turbo gets coated in oil residue.

Just my $0.02

It's mechanical IDI, no turbo. 2021