I've seen several threads on several forums discussing the different ways to mount an oil catch. I'm just curious, which way is best for NA motors?

The general consensus seems to be PCV -> Oil Catch -> Intake (manifold)

I have the Cusco Oil Catch sittin on my kitchen table and I really want to put this thing in Especially considering how much oil I found in my intake manifold.

 

__________________

 

Ya I saw that thread but I also saw that Josh (gd3kamiwanab) had his mounted/connected to the other side of the engine.

I wonder if the cusco one has any type of filtration in it so I can hook it up to the PCV.

Also, once this thing fills up with oil, how Do I empty it? I really need to learn to read Japanese LOL. No English documentation FTL

 

what's the ideal location to install and tap the oil catch can in a turbo L15 setup?
pcv? valve head? intercooler? breather hose?

 

In turbo setups the catch can will generally go between the valve cover breather and the vent (which is usually connected to the intake tube).

I need a catch can...

 

Ok, I think I've pretty much got everything figured out except one thing...

I was looking through all the hardware that came with the catch can

WTF is this thing?


Also, would anyone be able to post up pictures of how they mounted the brackets?

 

In the picture redrumm posted I used the stock air box bushing's and that metal piece that goes inside,then I used the radiator mount hole and drilled another next to it.

 

^^
Anyone know what that piece is used for?

 

I have used a catch can on highly modified air cooled V.W. engines that were set up with loose clearances and a motorcycle with a forged piston, but I don't understand why a naturally aspirated Fit would need one, unless you are putting too much oil in it or using it on the track and throwing a lot of lateral Gs on it.... Boosted I can understand.

 

I didn't think I'd need one either but when I took off my intake manifold a few weeks ago, I saw quite a bit of sludge inside.

Still curious what that piece is. Anyone?

 

I would guess that it is a filter.

 

meh, your probably just paranoid as far as alot of sludge. by no means is it something bad to add. as far as that bit from a random kit, phhhh, no clue, but I could easily source it down for you in person.

but the important part is that this is all metered air, you want to make sure everything is plumbed before the maf and that your not just throwing a filter on it and venting to atmosphere. Sorry if it wasn't raining now, I'd have popped the hood and traced it out for a more formal response.

[glad to see someone local that is into tinkering with that sort of stuff. cheers]

 

also, you can stuff your catch can full of coarse steel wool for filtration. the oil will bond with the steel and only vapors will be emitted back into circulation.

 

ya but you just need a chamber for it to condense. Its not about stopping very particle, its about stopping the 90% that is causing the excess sludge. Do you want to trade fundamental designs of the block and lower the flow rate of the valve breathers and probably increase the temps.

also its just maintaining some reasonable service proceedures. I'd rather keep the catch can as a service point once an oil change over once a fill up... it becomes burdensome when you reduce the flow and capacity and have to maintain of a frequent basis.

 

That piece is a plug. I had one for my Subaru when I changed the intake but I don't think I used it. I think it was for combining some vacuum lines or something so the plug was to be used in one of the empty holes but the intake I used was already one less than stock.

 

can we have a detailed photo showin exactly where the second hose connects to the engine the bit we currently can't see from the above picture?

Please