OIL CATCH TANK increase performance?

[33lam]

will the oil catch tank increase the car performance?? :bow:

[ddongbap]

No.

[battleversiontc]

No.

+1 there designed to catch oil before it gets to the intake pipe

[harveyjai]

so what does it do?
Any benefits or harm if installed?

[CASTREX]

Prevents oil to enter the intake manifold.

This condition over a long period of time has ben known to cause sludge formations and leading to other problems on some other Toyota models.

I have never heard of this problem on the Yaris tough.

To your question: It won't harm you to install one.

Is it really need it? Probably not.

Does it look cool on your engine bay? Yes

[battleversiontc]

its used on boosted cars. on na cars it wouldnt make any sense to install one not unless you add one and add a filter to the inlet side thats the side that comes from the manifold to valve cover i ran one on my tc then i boosted it so now it beneficial to me

[cali yaris]

hmm, I don't have one on any of my three boosted cars... :iono:

[battleversiontc]

try running a clear hose and watch how fast it will build up with oil
ive ran without it before its just an extra security to keepin the valves clean

[largeorangefont]

Not really needed on a yaris.

[ddongbap]

try running a clear hose and watch how fast it will build up with oil
ive ran without it before its just an extra security to keepin the valves cleanDoes it matter though? Isn't it oiled up under the valve cover anyways?

[battleversiontc]

nope cause oil is only sprayed out as the pressure increases in the valve cover if the pressure doesnt then nothing. which in boosted cars it does. nas only if you disconnect the hose from the manifold to the valve cover and out a filter on the inlet side there is now an unequal amount of pressure difference created instead of the natural push and pull effect

[ddongbap]

nope cause oil is only sprayed out as the pressure increases in the valve cover if the pressure doesnt then nothing. which in boosted cars it does. nas only if you disconnect the hose from the manifold to the valve cover and out a filter on the inlet side there is now an unequal amount of pressure difference created instead of the natural push and pull effect

Made almost complete no sense.

[battleversiontc]

Made almost complete no sense.

With a proper catch can setup, the crank case vent is still connected to the air filter box, then you replace the PCV valve on the head with a simple nipple connected to your catch van via a hose. The PCV valve should be moved to the outlet of the catch can to prevent pressurizing the catch can when under boost. From the catch can a hose goes to the intake manifold like normal.

Since most PCV valves leak on turbo cars we end up with a slight positive pressure in the crank case under boost and this back flows out the vent connection into the air inlet hose leading to the turbo crapping it up with oil, water vapor, and blowby gases. .

this is what a catch can does

[ddongbap]

With a proper catch can setup, the crank case vent is still connected to the air filter box, then you replace the PCV valve on the head with a simple nipple connected to your catch van via a hose. The PCV valve should be moved to the outlet of the catch can to prevent pressurizing the catch can when under boost. From the catch can a hose goes to the intake manifold like normal.

Since most PCV valves leak on turbo cars we end up with a slight positive pressure in the crank case under boost and this back flows out the vent connection into the air inlet hose leading to the turbo crapping it up with oil, water vapor, and blowby gases. .

this is what a catch can does

Whoa, much better. Damn, much better. lol.

[battleversiontc]

lol thanks i had to type it on the side before my uncle gets pissed cause im not doing any productive work when i should really be doing some parts orders for his body shop

[Nexus1155]

cars have ran 100k+++ miles without them, why rice a system that is stable? just do oil changes on time with proper synthetic...

[mojoyaris]

The puke can can be useful on an engine with mods, but our cars stock run lean.
I did notice gunk coming out and if you run the car hot enough to burn off the gunk at intake. You should be ok. The stock Yaris driven under normal conditions are ok without it. I only havevto clean out my can every 6 months.

[cleong]

If you had a stock AFR chart you'll see that the car runs roughly stoichometric till about 4000+ rpms when it goes very rich.

[jronald]

...
and I thought catch tank is for dry sump system...
lol

[mojoyaris]

If you had a stock AFR chart you'll see that the car runs roughly stoichometric till about 4000+ rpms when it goes very rich.

But compared to another engine it runs pretty lean in comparison, doesn't it?

Everyone who's had it dyno'd always say that the engine runs lean. Of course the VVTI is something else and then it turns into another animal altogether.

[cleong]

On the graph I saw, the AFR went to around 10. I've not seen that many AFR charts, so I don't know if you consider that as relatively lean compared to other engines.

[largeorangefont]

On the graph I saw, the AFR went to around 10. I've not seen that many AFR charts, so I don't know if you consider that as relatively lean compared to other engines.

No, that is rich for an N/A car.

13:1 across the board is fine on a WOT pull. A good tune with timing and fueling adjustments should pick up about 10% on these cars.

[cleong]

In a previous post I said it went very rich at high rpms but mojoyaris said that it was relatively lean. Hence the question I asked.

[justjesus]

will the oil catch tank increase the car performance??

I knew I ran into this in a recent magazine. I went home and found the article. It's a section called Fact or Fiction in Import Tuner Magazine.

This is NOT my opinion, my own findings, nor my theory

As quoted from the October 2008 issue:
"Traditionally added to keep cylinder heads and intake tracts vented and clean, rather than to increase horsepower..."

They tested an oil catch can on a SR20DET-swapped 240sx. Both an oil catch can and a breather filter (from Autozone) were tested, which included some dyno pulls.

Their findings:

"Not only did the catch can make pwer; we could actually see how it worked."

They included a dyno graph. The bigger gains were between 2500 and about 3000 RPM, then again starting around 5200 RPM.

The average whp with the breather filter was 242.8, while the average whp with the catch can was 244.3.


Hope this helps.

[mojoyaris]

so I wonder if it's the vvti that makes it run rich at high Rpms, but lean at low to mid rpms. I'm happy with the catch tank n the engine, but wouldn't mind entertaining a piggy back system to tune it to run richer at mid range.

[revoturbo]

oil catch tank improve engine bay cosmetic. not add performance..

[mojoyaris]

oil catch tank improve engine bay cosmetic. not add performance..

I don't think you've been around cars much, but people in the
Racing community would beg to differ. I've made these out of pop bottles and tubes in past cars. So it's not about cosmetics for me

[largeorangefont]

I don't think you've been around cars much, but people in the
Racing community would beg to differ. I've made these out of pop bottles and tubes in past cars. So it's not about cosmetics for me

Since it is not a racing engine, it is not that big of a deal. Race engines do not need a PCV system for emissions compliance, they run breathers and catchcans. If you change your PCV valve occasionally you dont need a catch can on a 1.5L low output NA economy engine.

Look into one if you run a forced induction setup.

[largeorangefont]

so I wonder if it's the vvti that makes it run rich at high Rpms, but lean at low to mid rpms. I'm happy with the catch tank n the engine, but wouldn't mind entertaining a piggy back system to tune it to run richer at mid range.

No, it is the engine mapping that dictates the fueling. VVTi has nothing to do with it.

[contraband831]

Oil Catch Cans are just eye candy in the yaris.