highline

I see most of you are not running ss line like in the link...are they neccessary or will the brenspeed jlt work fine?

MeanStang08

the stock OEM one isn't SS braided...

BlackBeauty4.6

ive heard about catch cans and breathers before but never paid much attention to them.. exactly what do they do? and what makes them a great mod to do? or which is better to do breathers or the can?

BIGPHIL

Basically what they do is filter out contaminated oil from blow by in the PCV system. I prefer to use a catch can vs breathers because they actually remove the contaminated oil. Breathers just allow the PCV system to vent but dont really remove the crummy blow by oil. They are good for NA or FI motors because they will keep the throttle body much cleaner as well as the intake valves. For an FI motor that has a positive displacement blower with/without an aftercooler, they help keep the rotors clean from any oil as well as prevent the aftercooler from getting clogged up with oil. Cars from the factory should have a catch can installed IMO!

MeanStang08

--stolen from somewhere on the interwebs--

the difference is, one is environmentally friendly, one isnt and one will hurt your performance, one won't.

the breather releases hydrocarbons into the atmosphere, one of the reason why cars run a closed PCV system nowadays....they decide to kill the quality of your intake charge by letting the oily fumes go into your intake, so your cat can sort out the mess.

the problem is, if you dont have a breather atop, and you route it back into the manifold (like stock), while you are seperating the oil from the vapors (like a seperator/catch can), you are STILL allowing slightly oily vapors into your intake, which is crap. This means if you are boosting, you are more prone to detonation, since your intake charge is now even hotter and has oil droplets in it, and...if you are high compression, you are losing horsepower since you could be running more timing, but since you are having to deal with the the hotter intake charge and oil vapor, you have to kill some timing.

the sole purpose of either is to seperate the oil from the crankcase vapors, and still allow the crankcase to breath properly without the oil vapors going into the intake manifold...

92hatchLX

I am running the jlt oil separator. Install took about 30 seconds, it looks stock and offers some great insurance for your motor. Well worth the price IMO.

highline

just sits there, eh? No banging/moving, ect? Supported by the hoses? I'm also looking at the jlt

92hatchLX

No banging, no noises here. Buy it and don't look back.

dmhines

I'm running a JLT with my Saleen setup ... If I empty it out after every gas fillup I get about a teaspoon of oil out of it each time. That would be quite a bit of oil over time coating my rotors and clogging up my intercooler ...

highline

wow, that is quite a bit...buying today, thanks for the help, pics, ect all