Best Catch can For 7m?

[JerzeySlowpra]

all catch cans are the same

 

[Adjuster]

I know there is oil vapor coming off the valve covers, at least on my older engine. It coated the IC pipes and filled quite a bit of the intercooler with oil condensed out of the air flow.

I just don't want to coat the new FMIC and IC pipes, or if I go with a MAFT setup at some point, coat that sensor in a blow through configuration. (Trending away from having a sensor at all, and going with a MAP based deal, and just an air filter infront of the turbo.)

The current breather/K&N filter setup I have now has oil in it, and when I was overfull of oil, it was pushing out there. It has since stopped doing that pretty much. (But does push oil out the dipstick tube from time to time as I needed a new 0 ring at that junction.)

 

[Turkish]

Where did all you guys get the caps or bolts you used to plug the port on the throttle body...lol I have mine electrical taped shut right now. Where did you get the caps and what size or whatever. Thanks. Also a catch can is a catch can is a catch can, it doesn't matter.

 

[IJ.]

Not wanting to start shit but I've seen a few posts that Catch cans are all the same... not quite true.

I've seen some of the cheap ones that are just a can with some fittings whereas a well designed one will have an internal baffle system to seperate liquids from the vapours.

 

[QWIKSTRIKE]

I had my fresh 7m plumbed this way and the NA T-piece doesn't flow nearly enough to cope with the blowby @ 6000 on the Dyno.

It pushed the DipStick out and dumped oil onto the WG.

Well you need to have a plumbed port for the turbo like in the stock setup. Accordingto the great chevyeater when it goes in to boost you need the vacuum from the turbo to take care of the pcv like it is set up in stock. Chevy is the man. I had my set up venting to atmosphere and you could see the vapor from the crank. When I boosted hard for the very first time it pushed my dip stick out a little. This scared me a bit. After talking to Brian and checking all my plugs and such for engine damage I have mine set up like stock so to speak. My Q45tb has no vacuum port for the pcv. I got a pcv vavle from chevyeater used in the chevy trucks. "dunno which one". I used the stock pcv tube and routed the pcv valve in the rubber hose at the end of the stock metal tube going to the throttle body. PAY attention since this is for the FFI system without the stock tb. The stock pcv is compromised with out some form of pcv. I plumbed the valve of the chevy pcv valve into a 5/16" fuel line and plumbed that to one side of my catch can. The stock ss pipe is teed so that end of the hose that has the rubber end that used to go to the tb is now plumbed with a pcv valve and put to one side of a catch can. Vacuum is now brought into the other side and this takes care of the pcv under normal driving. To take care of pcv under boost you need to take the other end of the stock ss pipe and plumb it to the intake of the turbo pipe.
Now I need to have a 4" aluminum intakemade with a 5/8 or 3/4" port for this vacuum to eliminate pushing up dipstick at high boost. The vacuum goes to one side of the catch can blow by is sucked in from the other side of the can and is trapped inside. Under boost there is a little inline filter to keep oil from going back into turbo track. That is why that little filter is supplied for those of you not using it and not knowing now you know what it is for. That filter goes inline between the rubber hose used to the turbo intake port from the ss stock pipe. You stock guys do the above vaccum without using a pcv valve since it issupplied in the stock tb. Instead of the hose of the teed stock ss pipe going into the tb put it to the catch can and then the otherside of the catch can goes to the inlet of the tb and now it is properly vented as it should be and all is good. Blow by is trapped in the can. :biglaugh:

 

[IJ.]

Mine was plumbed Cam Covers>NA T Piece>Catch Can>Turbo inlet as I said the T didn't flow nearly enough as soon as I changed to the bigger T piece it was fine!

Now I have it plumbed the same but with 5/8 fittings and no catch can as it was doing nothing.

 

[NashMan]

hummmm thous are pretty but do nothing for stoping oil going into your system


but the proper way of hooking them up is not shown


the way to hook them up so they work is one main line to catch can us na pipe or the turbo one don't mattter now the hose coming off teh catch can should have filter on it

i used this srew apart fule filter and stuff it full of white breather filter stuff

this way it keeps used in stead of just looking pretty

 

[tlo86]

hummmm thous are pretty but do nothing for stoping oil going into your system


but the proper way of hooking them up is not shown


the way to hook them up so they work is one main line to catch can us na pipe or the turbo one don't mattter now the hose coming off teh catch can should have filter on it

i used this srew apart fule filter and stuff it full of white breather filter stuff

this way it keeps used in stead of just looking pretty

wow... what he is saying is they do not stop oil from going into your system and you should have lines goto the can and a filter attached to the third hole.

he says to use a screw open fuel filter and stuff it with white breather filter stuff :stickpoke and use that for a catch can

a filter will go into the atmosphere, the accordian hookup will go back into your engine (and from what a buddy tells me that is the legal way even though you cant really recombust that oil from what i hear)

i will get a catch can soon as right now i just have k&n breathers

 

[QWIKSTRIKE]

wow... what he is saying is they do not stop oil from going into your system and you should have lines goto the can and a filter attached to the third hole.

he says to use a screw open fuel filter and stuff it with white breather filter stuff :stickpoke and use that for a catch can

a filter will go into the atmosphere, the accordian hookup will go back into your engine (and from what a buddy tells me that is the legal way even though you cant really recombust that oil from what i hear)

i will get a catch can soon as right now i just have k&n breathers

From over the years I truely understood that! But thanks. Interesting thought there Nash.

 

[NashMan]

ok i don't think you guy's get what i am tryin to say


this what i have done it work's great and keeps the oil away isn't that what you wanted in the frist place


any ways


you get a canster of some sort nice and small that screws apart take white beather fillter they come in small white sheets roll it up and cut to size put it in scrwe it back up and hook it tot eh line going to teh acordeing hose it's self

ps don't stuff it to hard let it be loose ish

ps if as one pces the trubo it's self will never i mena never suck it in if you want you can put screen mesh but that doe snot thign anay way it will never come out

and all you pipes are clean no oil whast so ever


ps you have ot change this filet every oil cange or soon pending on your blow by

 

[siman]

I am not running a catch can right now....LOL the blowby lubes up my throttle body and intake charge air... :yelrotflm

just kidding.

I am waiting until I get my FFIM together and positioned in so I can then get a catch can....

-Jonathan

 

[bgrieger]

Nash has it. I have one of the knock off cans. Mine new can is stuffed with steel wool, but any similar material will do. The unbaffled cans just take in hot oil vapour filled air, then it gets sucked into the intake. The little bit some actually get in their unbaffled cans is more an indication of how bad their engine is rather than how well the can works. Keeping it cool helps as well, and you can get moisture condensing out as well.

At the end of the day, a freshly built motor doesn't need it. If it helps, you had better speak to your builder about why his rebulid is that bad...

 

[NashMan]

Nash has it. I have one of the knock off cans. Mine new can is stuffed with steel wool, but any similar material will do. The unbaffled cans just take in hot oil vapour filled air, then it gets sucked into the intake. The little bit some actually get in their unbaffled cans is more an indication of how bad their engine is rather than how well the can works. Keeping it cool helps as well, and you can get moisture condensing out as well.

At the end of the day, a freshly built motor doesn't need it. If it helps, you had better speak to your builder about why his rebulid is that bad...

yes you shoudl chnage the fillter every oil chnage like every other new car or new engine

every car has blow by in less it is perfet


here is the way i rooted mine notice the carb fule filter it made of glass and stuff full of white breath filter cloth

it's on the turbo side click on it make it bigger pic


feel free to look at the rest of the pic's as well


http://www.imagestation.com/album/pictures.html?id=2125577842&idx=6

 

[supra90turbo]

two words: Road Draft.


Turkish: i took out one of the steel fittings that go in the accordian hose and went to the hardware store with the fitting.
looked in the "Big Ass Bolt Drawer" and found one that was short, but still had the same girth as the fitting.
put it in the accordian, and let go of the hoseclamp. i cant turn it by hand, and it has a rather large hex head on it, so i dont have to worry about it getting sucked into the turbo, as it would create quite a ruckus...

and it only cost $0.08

 

[Turkish]

two words: Road Draft.


Turkish: i took out one of the steel fittings that go in the accordian hose and went to the hardware store with the fitting.
looked in the "Big Ass Bolt Drawer" and found one that was short, but still had the same girth as the fitting.
put it in the accordian, and let go of the hoseclamp. i cant turn it by hand, and it has a rather large hex head on it, so i dont have to worry about it getting sucked into the turbo, as it would create quite a ruckus...

and it only cost $0.08

I was talking about the throttle body not the accordian pipe, I used a vacuume cap when I still had the stock accordian hose.

 

[supra90turbo]

woops. sorry bout that...
i bought an assortment of vinyl vacuum caps at a local autoparts store and one just happened to fit. it was tight, but it fit.

 

[IHI-RHC7]

Wow, I understood Everything Nash said. Good words Nash. The car is looking great too!