Final catch can setup

[davetheman81]

after getting some real good info on the factory catch and pcv system from members such as calan, i have revised my design to still use a single catch can, again i will be running a moderate setup at 20psi, the catch can will now be sealed and go into the intake pre turbo, and the factory pvc system setup will be used as well. i have only 2 concerns

1. what to fill my catch can with to actually baffle the oil so it doesnt blow through the can, i was thinking a scoring pad, or steel wool pad in the center of the can, but im open to suggestions.

2. with a sealed catch can setup, if any air enters the catch can from outside, i.e. a crack or bad fitting or loose cap, this will create a vacuum leak, and also add more unmeasured air into the motor, an i correct.

heres the setup

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thanks

 

[2slow4now]

That looks good to me. I wouldn't use steel wool in the can though. Just imagine tiny bits getting sucked into your turbo. What check valve are you going to use? I have some of those plastic ones but have thought about getting one of the ones with an fittings built in to them.

 

[Calan]

1. You probably won't be able to put a -8AN fitting where the stock breather tube is due to the baffle position in the VC at that point. There just isn't much room to work with vertically between the baffle and top of the VC.

2. Nothing you put in the can will do much of anything to stop oil from getting sucked through it. If you do find something off the shelf that can actually filter out the oil and other crap, it will have a high pressure drop and will probably cause your crankcase pressure to go up, especially with a single -8AN line. And like the previous poster mentioned, you run the risk of something getting sucked into the turbo. You're better off not putting anything in the can at all and just living with oil in the IC, or running an open can with bigger lines.

3. As for something causing un-metered air to enter the engine, it depends where the MAF is located (or if you are running SD).

 

[davetheman81]

the -8 an line is already welded on the cover, i am using a 2g maf, and will this can still catch some oil, or should i ditch the can and go to vc to intake pipe?

 

[Calan]

will this can still catch some oil, or should i ditch the can and go to vc to intake pipe?

It will probably collect some, mostly liquid oil droplets that condense and fall out due to gravity. You're still going to have a lot of oil and crap getting into your intake pipe though.

 

[PotatoFlakeSTi]

The oil coming through a catch-can is essentially collected by the surface area as condensation, steel-wool is common in some aftermarket options.

 

[gofer]

1. You probably won't be able to put a -8AN fitting where the stock breather tube is due to the baffle position in the VC at that point. There just isn't much room to work with vertically between the baffle and top of the VC.

If you are ingenuitive, or poor like me, you can make -8 AN line work just fine coming off of the valve cover. Rather than welding -8 AN fittings onto the VC just slip -8 AN hose over the fitting that's already there, then use a clamp to secure it.

Heres a picture of my -8 AN line coming off the VC with the stock fittings.

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[Calan]

If you are ingenuitive, or poor like me, you can make -8 AN line work just fine coming off of the valve cover. Rather than welding -8 AN fittings onto the VC just slip -8 AN hose over the fitting that's already there, then use a clamp to secure it.

Heres a picture of my -8 AN line coming off the VC with the stock fittings.

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Hey...that doesn't look like one of my cans... What are you doing out there Corey; marking up my stuff and playing middle-man on resales?

 

[gofer]

I just spent $200 on Earls -8 AN fittings and 10ft of Earls Pro lite hose to run your CC, thats more than I paid for the can. I still have to figure out where I'm going to mount it too, I've been debating whether to do a fuse box relocation and put it there or just mount it up on the firewall above the battery somewhere.

It would have been installed long ago but I didn't want to spend $200 on hose and fittings just to move it again and have to spend more money later.

 

[Calan]

Just messing with ya.

That is a lot of coin for fittings and lines. That crap is expensive for sure, but really nice to have.

 

[2slow4now]

I know of a guy that makes a really nice looking catch can thats filtered. ^^ I ordered one and can't wait to get it put in. Fragola makes some decent fittings and they run a little cheaper than some of the other brands. If you can get over the name!

 

[gofer]

I look forward to the day I don't have to worry about pushing that nacho cheese blow-by (from the E85) out of that damn vented RRE CC. It gets all over the place and makes a mess if I don't empty it every 2 weeks.

 

[Calan]

I look forward to the day I don't have to worry about pushing that nacho cheese blow-by (from the E85) out of that damn vented RRE CC. It gets all over the place and makes a mess if I don't empty it every 2 weeks.

Eh... nacho cheese blowby? That sounds really nasty, and I don't think I've ever seen that.

Is it thick and gooey? I'd be a bit nervous about that if it's coming out of the VC.


Oops - Sorry OP for getting off track in your thread.

 

[gofer]

Its not thick, its fairly runny actually, it just looks like nacho cheese and once it dry's on the driveway it's sticky as hell, like an old grape juice spill on the kitchen floor. Heres a picture I took of it, I figure its just a little bit of oil and condensation created by the E85. It doesn't happen when I run 91 octane though, so I don't let it haunt my dreams.

Heres a shot. Now you know where 7 11 gets their nacho cheese from, my DSM is the supplier.

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[AG 305]

Heres a shot. Now you know where 7 11 gets their nacho cheese from, my DSM is the supplier.

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yummy!

 

[92AWDHX40]

Hey craig looking at a catchcan set up, just havent decided on on yet paul said you make a really nice one, gonna need to figure out what size fitting next, my buddy is a welder. So i have options.

 

[Calan]

Hey craig looking at a catchcan set up, just havent decided on on yet paul said you make a really nice one, gonna need to figure out what size fitting next, my buddy is a welder. So i have options.

Please send me a PM about anything of that nature Victor.

 

[92AWDHX40]

Sure will thanks.

 

[davetheman81]

i did not weld the -8 or -6 an fitting either, looks it though . drilled and taped a -8an to 1/4 npt fitting in the side, and just further tapped a -6am to 1/8 npt into the pcv valve, with lock tite, then jb weld around them for that welded on appereance, and then spent hours cleaning out the baffle , untill i knew all the shaving were out. here it is, no welds at all! then hit all the letters with 320,600,800,1000,2000 aluminum polish, taped them off, high heat primer, gloss black, tape of the black, grabber green , clear coat and done.

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[Calan]

So what was the minimum ID of the 1/4" NPT fitting?

 

[davetheman81]

streight though to -8an but i drilled all the fittings out the farest i could to make for better flow

 

[bullet99]

Nice info I'll be doing this in the future.

 

[92AWDHX40]

Nice still working on valve cover shaving then getting fittings, it looks good.