gotcha, so if I build a 3 port catch can I would be set. And the setup functions as normal when not under boost (cruising/idle)?

Heres what I started on in the garage last night (-10an lines, i just need to figure out how to convert the PCV ports to -10

 

Sure, that would work just as well too. You can always install a third -10an fitting into the KYTP can.

Eric

 

You can easily purchase aluminum -10AN bungs and weld them onto the valve covers.

I'm still totally confused on how this is going to work.

-B

 

The crankcase sees excess pressure especially FI, nitrous fed, and stroked motors. The crankcase pressure escapes though the -10 ports into the catch can. The excess gasses escape through K&N filter, and the excess oil vapor is collected on the walls of the can. The vapor subsequently pools and collects at the bottom of the can.

Here's link to the Josh@KYTP's catch can GB. It's a great can with plenty of volume.

https://ls1tech.com/forums/showthrea...7311863&conly=

Thanks again,

Eric

 

hey man when you get that catch can installed can you post some pics up?

 

well my pcv is all installed and complete, just like the diagram at the top. hopefully, if all goes well with my tranny install, i'll take pics of it tomorrow. i wont lag on you guys!!

 

OK, so I am running 10 psi with Vortech Centri. Is there a DEFINITIVE BEST SETUP? I've seen many good designs here but ONE has to be the BEST for MY setup, which one is it?

 

I can say with confidence that if you run that set-up, that'll be the last time you have to mess with it. I've seen 1100HP street cars run a set-up exactly like that.

Thanks again!

Eric

 

That looks like mine from home depo parts but way less bling But my question is do you get that oil smell in your cabin? I ran an extra line to the stcok pcv from the intake to the very top of mine to keep the smell down. Works great no film in the intake.

 

All the LT1 boys are telling me I need my PCV system on the side of the LT1/LT4 intakes??? Is any other street cars doing away with there PCV systems.
I even thought about running a -10 from the passengerside valve cover and a -10 from the PCV port on the Drivers side INTAKE??
Would that be sufficent.

Where is the PCV port on the LS1 cars?

 

Here is the way we set up my partners Z06. 900 rwhp

1. AMW catch can
2. mcmaster check valve
3. stock pcv inline
4. moroso catch cans in the fenders
5. metal oil cap
6. Mustang PCV screen in the cap
7. -12 AN line off the passanger side
8. -8 AN off the drivers side


And a pic!

 

JMBLOWNWS6
Just to clarify (Trying to set it up like your buddies)

-10 Braided from each valvecover to a vented catchcan.
From the PCV on the side of the intake (LT4 car) I plan on running a -10 bung to a 1way checkvalve to a oil air serperator back into the front of the intake.

Looks like he is running braided lines as well, how did he set it up with the catchcan (Also how big is his, I need a small one) and what Mcmaster checkvalve is he using????
Thanks for any help and did I miss anything

 

well my mechanic is lagging on me, still havent gotten the car back, so gimme a few more days and i'll post some pics as well....

 

Yeah that car sucks!







Lots of air dam sweet ride and more pics of the catch set up that is by far the best I have seen.

 

Eric,

With your catch can system you will relieve crankcase pressure very effectively however you will have no vacuum system to clean out all that blowby and moisture from your crankcase. This will cause premature wear on your engine and cause the oil to become contaminated much faster.

 

This is not necessarily the case. Most guys connect the vacuum line directly to the intake. You can see vacuum on the gauge at idle and usually under light throttle. When the throttle is to the floor, the vacuum goes away altogether. Now the PCV system is replied upon to push hot gasses and oil through a set of filters. It's planinly not optimal.

Most guys that can use a catch can like this are the FI crowd, and guys running medium to large nitrous shots. Those guys change their oil ever 2500 miles (supposed to anyways ) When premature wear is mentioned, they don't think of a worn out motor driven 200K miles, they think of a disentigrating piston, spun bearing, etc. Those guys need all of the crankcase ventilation they can possibly get.

Thanks again!

Eric

 

Eric,

Your right that most FI and nitrous motors won't go the distance. But I would like to give my motor the best odds. For some reason people think that a PCV system is only for daily drivers. The minute you shut down your engine to a week later when you crank it up again to go racing these blowby gases and contaminated oil are working on your crankcase, lower piston walls, and bearings. The main things I see when tearing apart small airplane engines(no pcv) are pitted cylinder walls and pitted main and rod bearings. The ones that get flown alot last usually 2000 hours or more. The ones that sit for a week at a time are lucky to get 500 hours out of their engines before they need a rebuild. Forced induction probably has twice the blowby as normally aspirated car or small airplane engines. When we drive our cars around town 90 percent of the time we are in vacuum. It is like a vacuum cleaner sucking the blowby gases safely out of your crankcase where they can be harmlessly burned.

I really like your filtered catch can and I use something similar to it for my breather hose. I however run the stock PCV as a vacuum source too.

 

what if you put a checkvalve behind the stock PCV (in-line with the stock hose running to the front of the pass. valve cover). And then ran the back 2 valve cover ports to a catch can (with a filter?).

 

OKay, here we go again..... could you modify the diagram showing us how to improve it, thus maitaining a vac to "prolong" the life of my "way....way to expensive setup"....


I've got the parts comin' my way... I wanna do it right the 1st... and last time!!


Thanks

 

That would be a great setup. If your worried about oil in your intake you could also put an oil separator inline with your stock pcv vacuum line but it is really not necessary.