They do, they call it flame trap.

Valve Cover Ventilator - Flame Trap (Part # ERC248) - Land Rover ancillary components from Atlantic British

 

Rovers North is five times the price!

 

Damn shame...

 

So that part is only used on the 95 and earlier DI's?

 

On the later ones they went to the oil separator that looks like a corkscrew.

 

Yes, before stricter emissions regulations, they vented the engine to atmosphere.

 

So if we could do away with that and not throw a code, then it would be ok?

 

YUP. One reason we need to clean the intake tract out regularly is because we are sucking dirty oil fumes out of the valve cover (crankcase vent) and redepositing them in the intake...another good reason to change your oil regularly.....

 

I hate this recirculating oily dirty fumes back into the intake.

I wish I knew more about the Charcoal cannister as well.

 

This is nothing new. PCV has been around since the 50's for military applications and by the late 60's it was required on most American cars. Before that a lot of american engines had what was called a "road draft tube" that basically just vented to the ground. (a little bit of negative pressure applied by air moving across the tube opening.)