Installing oil catch tank

I recently purchase a catch tank from ebay with a air filter attached.

I know you fit one of the hose's to the right side of the Valve cover.

Where should i attach the other one?

I seen people fit the hoses on both sides of the valve cover? Or should i attach it to the intake?

Personally i don't like an engine to breath its own oil fumes so i block the hose to the PCV valve then make damned sure the cam covers are well vented (both) to the oil catch tank, which then vents itself to atmosphere. Some claim the PCV system gives some negative crankcase pressure (partial vacuum), to the betterment of ring sealing. the ONLY times I have seen this achieved is on race engines with whopping scavenge pumps and de-aerators that can pull a vacuum. A blown engine, be it super or turbo charged, needs this most when under boost, and of course at such a time the PCV valve is closed, otherwise the crankcase and rest of the engine internally, would be at full boost pressure. On RB26 DETT engines I drain the catch tank back to the sump with a low, very low, spring pressure flap valve, as they are notorious for filling catch tanks with blow by oil as drainage of the cam boxes is iffy, and oil mist is blown out to some tune. This is not the case with a healthy 2JZ, (or 1JZ) that has exemplary head to sump oil drainage. In fact, with RB26's I make a drain from off the back of the head, from a core plug hole that is at the bottom of the upper casting, to drain more oil direct to the sump via a -12 aeroquip hose and a sump fitting.

http://www.gatesgarth.com/RB26_Race_Engine3/rb26.html

Soooo connect both catch tank hoses to both sides to the valve cover and then the 3 one to the intake???

No, to the outside air, NOT to the intake! You greens, you try so hard

No, to the outside air, NOT to the intake! You greens, you try so hard

Hmmm don't know if you're haveing a laugh at me or beaing serious

I'm confused can anybody help me

Serious, vent all internal air / fumes to atmo, not back into the intake!

Yep as Chris says vent the left and right cam covers to the oil catch can and block off any links that go into the intake.

I wouldnt VTA under the hood via that little air filter, id pipe it downwards somewhere..

Why not catch tank then into the intake? Thats were mine go, loads of people do it.

I see people do it with no catch tank at all

Reason I ran from catch to the intake was the smell from the heater vents was unbearable due to it venting under the hood.

Because oil fumes effectively dilute the fuel octane and contaminate the engine oil. (The engine thinks it smells bad too, IYSWIM). If you just want a sanitary installation just leave the thing as stock, if you want to keep effective fuel octane as high as possible and engine oil contamination as low as possible, do it as I said earlier. Car makers would love to vent to atmo, but there's no way they would pass emission testing (unless they are VAG perhaps?).

Because oil fumes effectively dilute the fuel octane and contaminate the engine oil. (The engine thinks it smells bad too, IYSWIM). If you just want a sanitary installation just leave the thing as stock, if you want to keep effective fuel octane as high as possible and engine oil contamination as low as possible, do it as I said earlier. Car makers would love to vent to atmo, but there's no way they would pass emission testing (unless they are VAG perhaps?).

Thanks for the explanation Chris, leaving the ventilation stock is a little out out of the question as I'm single turbo and after market inlet.

Its all mapped to that set up, i wonder if that would eliminate what the engine thinks?

If you find the fumes are getting into the interior best leave it as it is, venting to atmo is something I do to all my cars as the oil stays so much cleaner, but yes, you can sometimes smell hot oil

Vented to atmosphere here. I had a catch tank installed but SRD kindly removed it and a much cleaner (for me and the engine!) setup. It's not like you're leaving plumes of oil residue when out to atmosphere either !