I just may pick up a small filter and let the breather just vent to atmosphere through it. I'll put a loop or two in the line so oil can't make it out and pipe it away from anything hot just in case. When I was racing we would just replace the PCV with a filter. Trying to fit a shut off valve in the air intake line sounds like it could be hard. However if someone does it I would love to see pictures and what parts were used.
Al, I thank you for this post.
Finally, someone else that "gets it". :thumbsup: And not only might it be hard, but any extra crap you hapharzardly stick in the intake path of a normally-aspirated Diesel will probably create additional restriction/drag and rob performance.
Gang, if you "break" the connection between valve cover and intake, and therefore the alternative fuel oil supply,
you've succeeded. Either by a cutoff valve in the breather tube, or by converting to an external breather. There is no need for some sort of convoluted jury-rigged air shutoff! I don't mean to sound preachy, but it's like people aren't even reading what they are posting, let alone what others have posted.
Now, if you were planning on operating your tractor near a massive natural gas leak, that's a different story altogether, and maybe you do need an air shutoff. However in that scenario, I doubt runaway should be your biggest concern... and maybe you should be
running away instead.
I guess on the electronic injection engines this would not be an issue since the ignition key would kill the injection system.
Makes no difference. The ignition key "killed" the OP's injection system. A common rail/piezo injector system would have done the same thing in this situation, as the injection system was not the source of fuel.
