so just to be clear you are running different lines/routing than what radium provided? can you provide insight as to why/what you were hoping to achieve?

very nice work!

 

Correct the "mitsu kit" would actually be worse since it's so small, plus the class rules state I need x size.

So I got this: http://www.radiumauto.com/Universal-...-Can-P289.aspx and put it where the STM one mounted on the tranny. 10an all the way through. Which actually led to MORE air and oil instead of less.

The main issue is location and lack of baffling for that back port. It's right next to the hole your oil goes Down into so it's natural for it to freak in that area it seems. This is why I'm pondering the fab'd cover because it'll give me 2 baffles of the appropriate size in the appropriate location. Modding the oem one would technically also work but I dunno.

 

worse as in how often u have to drain it, or worse as in regards to all the issues you'd have?

 

Both. If I fill a 2/3 quart can thats vented, whatcha think will happen to that little can on the left strut tower.

 

well ****

 

Man- I was thinking about buying an STM catch can but after seeing these pictures it seems like they suck huh?

 

The v2 is an "improvement" but yes it's still a very simply designed can compared to a Radium.

 

but from what u say, even the radium is not apt for road racing

 

It's not the can, it's the valve cover design. And then it's really the big *** open back port. That's why you see some of these drag cars drilling/tapping the sides. But I don't recall them saying what exactly they did with the back port.

So for cans. If you are going to even THINK about recirculating back to the intake - then you are a fool to use anything other then Radium like designs off the side port. If you just want to vent and dump, then really any of them will do the job - OFF THE SIDE PORT. The oem setup which as he pointed out earlier uses the PCV valve on the back port on purpose. It makes sense but you'd always be on boost in 98% of a lap so it "should not" be an issue, but really it'd be useless outside of idling in the pits/garage. However, it's still not ideal because you'd be sucking all of that lovely dirty moisture/air into the intake on an un-baffled port.

So my idea is to use the FF VC that points UP, put one into the intake manifold and one into the vented can. Unless someone really thinks the intake vac isn't really needed and it's a waste of time for "us".

 

Would it make any sense to drill a large-ish hold in the STM and pack the bottom with SS wool and then close the hole back up?

 

I do not track my car but I have a built br2.3rpm engine. I would consider this a "loose" built engine. I was considering the stm but I think I will go with the dual radium setup. I am mainly concerned about gunking up the intake, and I want to relieve the pressure so the crank case pressure does not cause my rear main and other seals to leak oil.

 

On track the rear port may be inadequate or even in a terrible position for pooling over time in sustained left hand corners. For AX, you don't sit at one steady state long enough to be an issue and even in the 1.5g range we dont build up anything in our catch can. I can literally go a full season without emptying it.

I do have all the return ports ported to get drain back flow as efficient as we can but its not that drastic. For a proper track setup tho, seem the rear port isnt the right place to pull from unless you dump that back into the dipstick perhaps.

 

wellllll i guess no catch can for me

 

Bringing this back from the dead because I'm worried about my catch can set-up being sufficient. I get from above that messing with the stock PCV system on the rear of the valve cover is a mistake for road racing. I also get that running the catch can to a vacuum source often results in the oil going right into that vacuum source rather than being "caught." So, if I run a VTA can off the driver's side, how do I know if it's working sufficiently? I've run a drivers side can in the past with a line to my intake and all I ever found in the can was an oily film. I also found an oily film in my intake tube pre-turbo. I can ditch the line to the intake and just run it VTA, but I doubt it's going to catch very much. Is it worth it to open up the stock drivers side port for running 25-30 psi? It's a lot of work if not necessary. I did used to just run a filter on the side of the valve cover and it got oily over time, but I certainly didn't have oil spraying everywhere. So, I'm not quite sure which way to go. I think VTA off the drivers side with the stock port, or VTA off the drivers side with an enlarged port, if it's really worth the effort. And if you are enlarging the drivers side port, is it worth it to drill a second drivers side port on the rear of the drivers side too?

TIA.

 

On my higher mileage engine running 24psi on track I've only got one 10AN port off the front of the driver's side of the valve cover venting to atmosphere. I've never had more than a bit of sludge at the bottom but I guess that doesn't necessarily mean that it's working to condense the vapors.
I hooked up a pressure gauge to the cover and did some 29psi pulls on the street and never had the needle budge.