crankcase vent

[bear76]

Can I remove the CDRV and all the vent tubes with it? Do I need it for the engine to function properly? I have an 83' m1009.

Thanks.

 

[85-m1028]

in a word no, not unless you want to replace the seals every 1000 miles, why would you want to remove it in the first place??

 

[bear76]

I'm trying to clean-up the engine bay and simplify things alittle, pulling everything out that dosent need to be there to work. What is the function of the CDRV anyway, other than venting the crankcase?

 

[85-m1028]

diesels have high compression ratios, so combustion gasses build pressure inside the crankcase and the cdrv is there to relieve the pressure. When the cdrv fails "usualy clogged by oil" the pressure builds inside the crankcase and blows out the rear main seal and other gaskets.

 

[bear76]

Could you just use a breather filter?

 

[85-m1028]

then you will just vent the crankcase gasses out to the atmostspere, "I wouldn't recomend it" the crankcase gasses are routed back into the intake manifold to be run through the combustion chamber again and out the tail pipe. Diesels require a slight vaccum in the crankcase.

The cdrv is there to regulate the vaccum. For example next time you have the engine running take the oil cap off and notice the white smoke, if you stuck a filter on it all that smoke would just pile up under the hood. Unless you want to be that hoop dee rolling down the street smoking like crazy!!

 

[CUCVFAN]

Not to mention the oil residue that would filth up the engine compartment....