Crankcase Pressure ?

[Matt M]

Ive got the JLT catch can on the passenger side but nothing on the driver side,
On my TVS car.

I seen the small filters people are putting to vent, Are they worthy of the cause? ...any info on Crankcase Pressure would be of help.

Thanks!

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[AlyourPal]

I don't believe you really need anything on the drivers side, because that vent runs positive from intake to crankcase. The passenger side runs positive from crankcase to intake, which is why you want the catch can because the air in the crankcase has that oil and dirt that you don't want flowing into your intake. But again the drivers side runs the other way... the air from the intake (already filtered from your normal intake filter) is going into the crankcase which is the dirty part.

I'm by no means an expert but that's my understanding. I also have no idea how forced induction would affect the set up, but I'm guessing it would just increase existing pressure issues, instead of reversing them. Google/wiki "PCV" for more info.

TL;DR - Not worthy. You are all set with current set up.

 

[whatsup62]

I went from catch can to breathers

 

[Matt M]

I went from catch can to breathers

Why?

 

[NightmareMoon]

My understanding is that the passenger side mainly applies the vacuum to the crankcase and is more likely to pull in oil vapor. The driver side usually just acts as an intake, and won't typically see much oil.

Breathers defeat the whole PVC system (which serves a useful purpose), and their main advantage is that they look pretty.

If you're considering anything other than adding catch cans to an existing naturally aspirated PVC system, its worth doing a google search on Positive Crankcase Ventilation Systems and doing some research on how the system works and what it's designed to do before you start modifying it.

 

[whatsup62]

Why?

Couple of reasons.
First i feel like its a cleaner looking setup.
Secondly i spent a good amount of $$ of a catcth can ( second one actually). When changing intakes there was still oil in it. Now no way for that to happen.

 

[MyLilPony]

I went from catch can to breathers

which breathers did you use, any significant build up of oil on them? For the IMRC line did you just leave that venting?

I really want to get rid of all the lines I have running all over the place and be able to easy pull the intake pipe off at the track...

 

[Matt M]

Honestly, I want to try an fail proof what i can to make sure all the little things are tight that which may help in the long run.

 

[Dennisn]

I ran the breathers on my setup and got all kind of oil on drivers side. Pass side has a check valve in it, drivers does not. I'm assuming that's why I'd get so much oil on the valve cocer. I went with a breathered catch can setup now. (Does not recirculate).

Yet to put any miles on it so won't really know how it's working for a while.

 

[dubster99]

Couple of reasons.
First i feel like its a cleaner looking setup.
Secondly i spent a good amount of $$ of a catcth can ( second one actually). When changing intakes there was still oil in it. Now no way for that to happen.

Same here. I spent $200 on a catch can, and would need to spend another $175-200 to make it work with the Paxton. $400 in a catch can when I can just run a set of breathers? Easy decision. No oil residue on anything for me yet.

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