Thread: oil can

is there really a difference in all the different catch cans. I don't really see how there is, just looking for an explanation on why there are $10 ones on ebay and also $120.

Probably quality of the product. You really do not need the catch can at all, just a hose.

If your replacing stock setup that is correct. It makes no sense to why Nissan did their catch can setup like they did pre RR/VE.

Now if your actually looking to get rid of extra oil that ends up in the intake manifold, a catch can is a good way to go about it.

just a hose? What get rid of the t from the vc and run directly back into the intake? This is on a u13 bb.

forgot to mention i'm running blowthrough as well.

Because it will still drip, so having a T makes half of it go back into the block.

The reason it's hooked up to the intake is to reduce the emissions a bit, just like the PCV valve, it keeps the oil from dripping onto the block, and finally it does help reduce the crank pressure.

venting the head also helps with the seals in the engine under boost. when you go over what these cars were intended to do on a daily basis like race, turbo the DE or turn the boost up on a det you will want to remove the oil mist that comes with venting the head to some sort of catch can or back into the block by rerouting the hoses. you don't want to vent this right from the head because you will cover your engine in a fine oil mist and possibly screw with the AFR of the car with un-metered air.

so, run one line off of the t to my intake on the turbo and the other side of the t to the block correct? again, I'm on blow through.

Very good point.

Now he is blow through, so the ideal place is to put the VC breather after the maf, but thats draw through. If you are blow through you can still suck the blow by to reduce crank pressure, but I would disconnect the PCV too, otherwise your manifold will suck un metered air while outside of boost.

its true, on my build i get some blowby under heavy boost and a nice mist goes right onto my coil plug wire, if i pound the rev limiter it does it worse so ill be getting a catch can to keep that oil from getting everywhere cuz its anoying, haha every big build motor uses a catch can because under heavy use blowby is enevitable. Our crankcases have a pretty big ventilation but again under boost you will get blowby enough to where you will get some oil mist from the valve cover breather.

Just buy a cheap oil catch can from Ebay for $10 that can be taken apart. Fill the inside with coarse steel wool and put it back together. This will act as a cheap baffle and keep oil from going back into the intake. Works like a freakin charm for me!