Iilac

I wanted to know if anyone here had installed an oil catch can on the HR yet? I have one on my Maxima and that thing catches alot of blowby oil. Want to get a DIY instructions if anyone had done it before.

Thanks.

Clipdin

iTrader: (18)

I'd like to hear the answer to that question too. I just read the DIY catch can, but would like to get a GReddy.

Clipdin

iTrader: (18)

I take the lack of response as a definite "NO".

T_K

iTrader: (5)

It's the same as the DE.

TK

Zerocool70663

Is an oil catch can really necessary on non FI? Because I was really looking into this.

Iilac

Not necessary but a very good preventative modification that is cheap to install. You will see lots of blowby oil at N/A. I do on my maxima.

Zerocool70663

I think im going to go buy the greddy 15mm or 9mm. I wounder which one is better I think one just can hold more oil that the other. It looks like the DIY is not to hard.

Riley07

iTrader: (6)

I'm thinking about doing the DIY catch can...I know my S2000 had bad blow-by...

tsabrale

iTrader: (3)

I am going to do it this weekend. I think it's a great idea and very simple. If it doesn't work, just save you old parts so you can put them back the way it was. Of course, I may order a catch can later, but for now, this can't hurt. Also, it's definitely a nice space saving mod.

SRTtoZ

iTrader: (4)

Meh, from my personal experience the DO IT YOURSELF catch cans are soo much better.

I had a greddy for my SRT-4 and that thing was complete trash. It was a solid design but the oil tube attached blows out under pressure and makes a loud hissing noise, and this was with returning it to Greddy 3 times for a brand spankin new one.

I then made a do it youself at Home Depot for 20 bucks and it lasted, plus it was a lot smaller so you can fit it better.

Iilac

Please post DIY instructions if you guys do it.

Thanks.

Clipdin

iTrader: (18)

It's already there. Search in the DIY section.

onyxaltezza

iTrader: (7)

A catch can is a catch can. I can with lines in and out, what more is there? Cant justify buying an ARC catch can for freakn $250, just cuz its titanium hahaha.

IMO I dont think its necassary on NA motors, but its not going to hurt at all, so why not for $50 install one? No reason not to. Ive had one on my MR2 turbo and for sure on FI cars its required.

NRG Engineering makes a neat catch can for roughly $60 or $70. And when I install mine I will be going with a 15mm. 9mm or 12mm has been known to cause restrictions in the PCV for some applications/cars(long term damage), but I dont know about the Z. Id still rather play it safe and not risk it, so 15mm.

-Aaron

Clipdin

iTrader: (18)

^^^ More good info, thanks!

Quamen

iTrader: (14)

There should be no issues with those on the Z. The PCV is very small on our cars and it should not be restrictive.

FYI, a catch can is a catch can but it is derived from a true air/oil seperator of which there is a science to. A swirl affect and baffles are used generally to spin the air out and trap it so it seperates. In race car applications nearly every catch can that is on the market for the Z would be considered a poor design, including the ARC.

onyxaltezza

iTrader: (7)

Yeah I know of the differences in a real functional down to the nitty gritty catch can, and a can with just 2 hoses, and a level reader.

There is a DIY for making the 'real' catch can, but I cant find it right now, MR2 forum is lagging. But in honesty the 350Z will not benefit much from a 'real' catch can, unless boosted.


-Aaron

T_K

iTrader: (5)

I want to make one, but I also want it to be maintenance free. Is there an easy way to have the oil in the can lead back to the block? Call me lazy, but I just don't want to have to check if it needs emptying or not.

TK

tsabrale

iTrader: (3)

You don't want the contaminated oil from a catch can put back into the block. Normally, the oil is fed back into the engine to burn up. By using a catch can, you can collect then dispose of this oil before it goes back into your system.

T_K

iTrader: (5)

I didn't think it would be contaminated coming out of the valve cover. I can see it getting contaminated from the condenser media, such as the steel wool that seems to be popular to use. What if using just a chambered catch tank, with porous walls, like a plate with holes drilled in it?

TK

tsabrale

iTrader: (3)

Because it is engine blow by, it condense fluid is oil with gasoline. So when you actually smell the oil from the catch can, it smells more like gas. You won't want to add that back to your engine.

BTW, I finally got the DIY catch can installed. Pics can be seen here. Entry #170.
https://my350z.com/forum/engine-drivetrain-and-forced-induction-diy/237059-homemade-catch-can-9.html