Ccv mod question

[Tivs]

So I'm going to be doin the mod shortly and I dont want the fumes in engine bay. My question is can I weld a nipple on my exhaust and let the fumes leave out my tail pipe? Or is the exhaust pressure to high. Install a check valve of some sort?

[NoRalPh]

Why not just put it back in the motor, minus the oil, and you'll not only eliminate the odor but actually make the motor's emissions legal...

Look in the Performance Forum here, there's a recent post where the whole "check valve to the exhaust" (I'm against it for the possible trouble it could cause if the valve failed) was discussed.

You have to remember, a diesel (because of the high compression ratio) produces a fair amount of blow-by compared to a gas motor. This production of volume & pressure can quickly rise to the point, when restricted, where it can force oil out of every seal in the engine. Why take the chance? What is there to really gain by do so?

[DrewGerhan]

I would figure after a while that there would be oil droplets coming out of the exhaust pipe.

Personally, I am quite proud of the fact that I can park in anyone's driveway and not have to worry about leaking type of fluid. My last diesel marked it's territory like it was its job.

[Tivs]

OK thanks dude just wanted some input. How do you make the oil catch?

[NoRalPh]

Well, you either buy a kit that has one, or make yourself a "catch can" that would collect oil droplets in the blow-by and pass the vapors, without the oil, back out to be put back into the intake (that's what the kits you buy would do). I just vent mine so I've never made a can but I would think something that was deep enough (maybe with a tube that went 1/2 way down) to be the "intake side" and tapped off the top to be the "exhaust" and returned back to the motor.

You have to be careful you don't cause a restriction when you do this though because the crankcase has to "breath". You don't want to have any low-spots in the tubing (where oil could collect), kinks, or that down tube to ever get submerged in oil.

Good Luck!