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Catch Cans

Baz

By Baz,
in Engines & Forced Induction

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Baz Experienced

Baz

Posted
Posted

With so many catch cans on sale through the forums these days they seem like a pretty popular upgrade for vehicles but I am yet to be convinced as to what they actually do.

What do they actually do? Is there any point in the point of modifying a motor that they become a necessity? Or are people just buying them without a real need for them?

I just don't want to go spend money unnecessarily if they the need isn't there for one when I can spend money elsewhere.

Cheers,

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predator Grand Master

predator

Posted
Posted

They're not essential.. maybe if your fulsik drift car is nearly shagged and about to split a ring.. but you can probably get by without one.

I pulled my piping off some of my fmic piping and there is absolutely zero coating in the inside at all, whereas there used to be a little bit, so mine seems to be workng there.

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williamsf1 Mentor

williamsf1

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well I find the GTR makes so much "G" loading that the oil tends to want to find its way into the intake via the turbos and intercooler... then leaning your nice A/F mixture ...... till BANG! :(

and I dont like cleaning out all the pipes on a weekly basis!

BTW I am looking at running 2 catch cans like the BSM race GT-R that SK is involved with.....

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SDEWY5 Community Regular

SDEWY5

Posted
Posted

i cannot vouch for them enough...i guess it depends what car though also. For the Skylines you can probably get away without one but better off to have one and not risk fouling plugs and so on. I was at Eastern Creek today and not a drop of oil went into the intake, car performed solidly all day...minus that exhaust gasket...curse that gasket...

Ran a Merc out at Oran park few months back and it dumped so much oil into the intake it was actually pouring out through the intake and over the front chrome grille. Also fouled up the plugs to thepoint where the car would barely accelerate at all...

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williamsf1 Mentor

williamsf1

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tommyk maybe you are not driving it on the track? and by that I mean around corners....

I now have baffles in the cam covers + a catch tank setup..... however it still needs a little work, so will be adding the barrel type tank near the strut brace to catch the initial vapour....

I don't have the nice plumb back, as I'd like to keep the engine intake clean....and fueled up!

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CEF11E Veteran

CEF11E

Posted
Posted

catch cans are good for engines with 100,000 kms + and high RPM.

I had one on my old RB20 and it was nessacery for drift as there was excessive blowby at 6000rpm but for normal road use you dont need one otherwise they would be a factory inclusion

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Beer Baron Grand Master

Beer Baron

Posted
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hmm, i will have to check my intercooler piping again but last time i checked it there was zero and i mean nothing in the way of oil in my intercooler pipes. And it has seen a few track days this year. RB26 i'm talking about.

Williams, are you still getting that much blow by after the rebuild?

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JDMfantasy Explorer

JDMfantasy

Posted
Posted

No oil comes out of the hoses. They are clear hoses, and theres nothing coming out of them, so no problems there. Also where I live there are no emissions testing or inspections or anything of that type of nature, so you can get away with non-street legal everything B)

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Ronin 09 Grand Master

Ronin 09

Posted
Posted
No oil comes out of the hoses. They are clear hoses, and theres nothing coming out of them, so no problems there. Also where I live there are no emissions testing or inspections or anything of that type of nature, so you can get away with non-street legal everything B)

oh, you must live in JDMfantasy-land!

:D

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JH32 Grand Master

JH32

Posted
Posted
A catch can is not needed. Instead of paying $100 + for a can, run your hoses to the bottom of the engine bay, and simply have them vent to the air.

Err ... would this not pose a hazard for other road users when they drive through your oil? :D

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