PCV SYSTEM

[marauderrocks51]

I have a catch can mounted to the dr. side fender well . im not a big fan of the smell . 5/8 hose is ran from both cam covers to can . question , I would like to move the can away from engine bay . like down the frame somewhere . would pressure be a issue by doing so . OR what if both hoses from cam covers were routed to the atmosphere . I understand , not EPA friendly , BUT , would that compromise anything . thanks for your input . just want to ad that the catch can has a external filter . that's what the smell is

[fastblackmerc]

This is my setup.


http://i167.photobucket.com/albums/u133/fastblackmerc/MM%20Mods/Oil%20Catch%20Can/DSCN0443.jpg (http://s167.photobucket.com/user/fastblackmerc/media/MM%20Mods/Oil%20Catch%20Can/DSCN0443.jpg.html)
http://i167.photobucket.com/albums/u133/fastblackmerc/MM%20Mods/Oil%20Catch%20Can/DSCN0445.jpg (http://s167.photobucket.com/user/fastblackmerc/media/MM%20Mods/Oil%20Catch%20Can/DSCN0445.jpg.html)

[fastblackmerc]

I just completed a 250 mile trip, will drain the catch can and post the results.

[marauderrocks51]

certainly looks sharp , but I don't want to run it back into the intake .

[fastblackmerc]

If your catch can has a filter on it then it's being vented to the atmosphere.

Vented to the atmosphere will most likely leave an oily residue all over the place and the smell will permeate the passenger compartment.

There was someone that vented the PVC system to the atmosphere and did nothing but complain about the smell in the car.

If you don't run it back into the intake and if your state does any visual inspection - you will fail.

Mine is a closed system, no smell, environmentally friendly and easy to drain.

[fastblackmerc]

Good info on catch cans.

http://oilcatchcan.com/

OP - post a picture of your setup.

[fastblackmerc]

certainly looks sharp , but I don't want to run it back into the intake .

Why not?

The purpose of a proper oil separating catch can is to route the blow -by gasses through a baffle system that provides the most contact possible with the outer surface resulting in the oil being trapped and removed from the other gasses that do continue on through the intake and are burnt and consumed. It does NOTHING else in ANY way to the engine oil itself….it can’t.

[RubberCtyRauder]

That;s why you smell it, you vented it to the engine bay, just as fbm pointed out, it needs to go back to intake to burn of the gases, the oils stay in the can.

[RF Overlord]

Jim, your engine bay looks nicer than mine did when brand new. I hate you.

[Turbov6Bryan]

That;s why you smell it, you vented it to the engine bay, just as fbm pointed out, it needs to go back to intake to burn of the gases, the oils stay in the can.

Tooooo easy

[marauderrocks51]

the actual question was . if I moved the can , lets say , all the way under the trunk , or for that matter to the next block . would there be any pressure issue that would interfere with the vent process due to such a long hose . my thoughts are it should breath no matter what . some other forums say different . im fully aware I vented it to the engine bay . what do the rest of you trilogy guys do? I wont route it to the intake due to filling of oil under the intercooler . is this correct or not ? thanks

[fastblackmerc]

the actual question was . if I moved the can , lets say , all the way under the trunk , or for that matter to the next block . would there be any pressure issue that would interfere with the vent process due to such a long hose . my thoughts are it should breath no matter what . some other forums say different . im fully aware I vented it to the engine bay . what do the rest of you trilogy guys do? I wont route it to the intake due to filling of oil under the intercooler . is this correct or not ? thanks

There would be no pressure issue.

As to oil collecting under the intercooler..... A properly constructed catch can will separate the oil from the blow-by gasses. The oil should settle in the catch can to be drained off later and the remaining gasses would go back into the intake to be burned. That is the whole reason for a catch can, to catch the oil.

[marauderrocks51]

well put thank you !!

[Marauderjack]

Hook the PCV system back up and let the catch can "CATCH" the oil and the remaining fumes will be burned after they enter the intake!!:beer:

[justbob]

Your essentially using your catch can as an breather tank.

I use an oil tank and vent to atmosphere. I had originally ran open breathers and like you I couldn't tolerate the fumes. I installed the breather tank under where the battery normally goes and attached it to the frame. Care must be taken that both hoses run on a very slight angle downwards to the tank to drain the oil. I have ZERO smell now.



Sent from my iPhone using Tapatalk

[fastblackmerc]

BTW... the best catch can available is one from 42 Draft Designs.... IMHO.

I use their stealth can in the wrinkle black finish.

[marauderrocks51]

Great info all . plan change in the works !

[mm svt]

Fast black that's a very nice engine compartment. Catch cans are coming for the rebuild as well just haven't purchased yet great info here thank you

[fastblackmerc]

Fast black that's a very nice engine compartment. Catch cans are coming for the rebuild as well just haven't purchased yet great info here thank you


Jim, your engine bay looks nicer than mine did when brand new. I hate you.

Thanks for the complements guys!