Oil Catch Can Setup (Need Help!) - Toyota Nation Forum : Toyota Car and Truck Forums

Leviathan66610 · 12-05-2009, 10:51 PM

Ok I've had to do quite a bit of research about PCV valves and what they do b4 I finally figured out what an oil catch can is and does. So I'm curious about a few things. I want my car to run faster and more efficiently, and the catch can should help protect it as well by preventing oil from reentering the intake. But my question is this, since the catch can is sealed, the combustion byproduct gases will still reenter the intake just not the oil. But if I connect one end to a breather instead of redirecting it into the intake, will that improve hp or help the car run better by allowing those gases to escape, or should it be recycled? I know it's 2 help with emissions, but I'm still not sure which would be preferred. I know some ppl have different catch can setups so basically what I'm asking is what the most efficient setup would be and if anyone has any pictures of theirs. Also I've heard of some people replacing their pcvs with brass knobs; why do they do that?

ghettosled · 12-06-2009, 09:09 AM

first off, a catch can will do zero for performance. it will help to keep oil from traveling back into the intake (this helps more on some cars rather than others).

i would still connect it back to the intake for two reasons - 1. venting to the atmosphere isnt good for the environment and might cause an emissions/failed inspection. 2. when connected to the intake, it then pulls a vacuum to pull the gasses out of the valve cover

i keep meaning to install a catch can on my camaro because the PVC systems is notoriously bad.

as for the brass knob, i have no idea.

BamZipPow · 12-06-2009, 11:24 AM

Here is my oil catch jar/system build...

I put one in my wife's 2001 Camry as well.

Leviathan66610 · 12-06-2009, 12:24 PM

Wow thanx so much, I read ur post. Adding an inline fuel filter is a great idea!

BamZipPow · 12-06-2009, 04:24 PM

As you can tell...my setup is much easier/cheaper than almost any other setup out there. The only problem that I can see is how/where to mount it.

Chris Crash · 12-06-2009, 06:33 PM

What would this actually accomplish?

BamZipPow · 12-06-2009, 09:50 PM

Quote:

Originally Posted by Chris Crash

What would this actually accomplish?

Keeping as much oil out of yer intake system will keep it from coating the intake system. The oil plus the fine dirt that gits by the filter will combine to make a nice sludge decreasing the airflow to the engine. Some of it will also make a nice abrasive paste to wear on the parts on the throttle body...especially the throttle plate shaft/sleeve bearing. Excessive wear will cause the throttle body to leak air and git more unfiltered air into the throttle body accelerating the wear.

From the factory side of it...this condition will cause you to either replace the worn throttle body or cause a ton of headaches that will drain yer wallet so you will have to buy another used/new vehicle.

Is that good enough?

slpr1mz · 12-07-2009, 02:04 AM

Quote:

Originally Posted by ghettosled

might cause an emissions/failed inspection. .

this is true. the pcv is created to be a closed circut system and unless your really good friends
with the people doing your inspections, this will happen... i had to go a family mechanic, because the mechanic i normally went to who charges me cheaper wouldn't do it, and let him know about my intake system and that it wasn't street legal :-/... he was nice that once... but 2 year for a smog check and i still have all my stock peices laying around some where lol... good luck though!

Leviathan66610 · 12-07-2009, 02:02 PM

Quote:

might cause an emissions/failed inspection.

Well I live in Arkansas so they don't do emissions tests here. I don't even have a catalyctic converter and police have never said anything. But I had this crazy idea about running a two way hose from the catch can to the intake and putting a breather on one end so that the vaccum is still there, but some of the gases can escape so the intake sucks up mainly nothing but clean air. But running an inline filter sounds much easier.

slpr1mz · 12-08-2009, 01:40 AM

Quote:

Originally Posted by Leviathan66610

Well I live in Arkansas so they don't do emissions tests here. I don't even have a catalyctic converter and police have never said anything.

the one thing i hate about cali... is emission... i'll deal with taxes, home prices, even illegal imigrants... just let me drive my car with out emission equipment! i'll even pay an extra 45 on my registration to do so!!!!!!!!! lol

CROYCE992 · 12-19-2009, 11:36 PM

so guys.. how do I install.. more like where do I install an oil catch can in a 5sfe??

BamZipPow · 12-20-2009, 09:36 AM

Quote:

Originally Posted by CROYCE992

so guys.. how do I install.. more like where do I install an oil catch can in a 5sfe??

In between the PCV valve and the air plenum.

Like this...

CROYCE992 · 12-20-2009, 01:23 PM

okay looks easy enough. as of right now I was thinking of getting an oil catch can off eBay for around $20 shipped but for a lot more I could get one with a breather filter on top. i imagine that the breather filter is so that the restrictions imposed by the baffles of the oil catch can would be essentially negated but i did some reading on the RX8 forums and some people said that it would essentially be a vacuum leak. anybody have any thoughts on this? should i just get a basic one or one with a breather filter to negate any restrictions??

BamZipPow · 12-20-2009, 08:30 PM

Just make a basic one. Try my setup and try blowing/sucking through it. There isn't any restrictions that would be significant to make a difference...