Catch Can Questions

[@TDC]

Hey guys! I have some questions that I need help answering. I want to gain a better concept of what to look for when making an effective catch can. I have researched countless threads from Calans threads to just plain smaller threads and still cannot find what I need. I am looking into making my own catch can. I am a DIY type of person. I know I can just buy a Calan can and call it a day but I just like the satisfaction of being able to say I made my own can can and it works. I know that we run a recirculated catch can setup. I am aware of the external design I am looking for but I am having trouble with the internal design. I've read threads where they say to use steel wool, but everyone says that it breaks down over time and will get sucked into the turbo. Does the inside need to have some kind of filter for it to be the most effective? I'm sure it needs baffles but does it matter how they are placed inside the can. Are there any do's or don'ts when it comes to the baffles?

 

[L1v1ng L3g3nd]

Maybe this pic from Saikou Michi will help you:

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[@TDC]

Maybe this pic from Saikou Michi will help you:

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Thanks a lot bud! That did help! Now as far as the 3 layer mesh baffles are they just 3 different plates or is there some kind of material used to help filter?

 

[@TDC]

Here's a template of what I'm thinking of doing. The vertical lines represent holes in the baffles.

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[ErikTande]

Maybe this pic from Saikou Michi will help you:

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Does anyone know of a can like this with 2 inlets and 1 outet for a vacuum?

 

[TSiAWD666]

Saikou Michi can do a custom one with two inlets. Just email him. He's fairly communicative.

 

[ErikTande]

Saikou Michi can do a custom one with two inlets. Just email him. He's fairly communicative.

I just did that, thanks!

 

[ErikTande]

Here's a template of what I'm thinking of doing. The vertical lines represent holes in the baffles.

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So the 2 inlets will be connected to the valve cover, and the outlet to the intake, right? Would any pcv or check valves be needed with this setup?

 

[@TDC]

So the 2 inlets will be connected to the valve cover, and the outlet to the intake, right? Would any pcv or check valves be needed with this setup?

I would imagine a check valve on the outlet before the intake pipe couldn't hurt.

 

[snowborder714]

Why would you put one on that side of the catch can? When would you ever see air flowing backwards out of the intake into the can?

If you're running a stock PCV valve, it'd be a good idea to put a check valve inline in case the PCV fails. Other than that, I don't see a reason to use one.

 

[ErikTande]

If you're running a stock PCV valve, it'd be a good idea to put a check valve inline in case the PCV fails. Other than that, I don't see a reason to use one.

Yeah, with the can design TDC showed, I was thinking I could remove the PCV valve and run both valve cover lines to the inlets, and outlet to the intake without any issues. Is that correct? Just double checking. Thanks!

 

[snowborder714]

Yup, that'd be fine.

 

[@TDC]

Why would you put one on that side of the catch can? When would you ever see air flowing backwards out of the intake into the can?

If you're running a stock PCV valve, it'd be a good idea to put a check valve inline in case the PCV fails. Other than that, I don't see a reason to use one.

I thought that slope would help draining when I would drain the can. It wouldn't be that sloped but something to help the draining process.


I'm trying to find some kind of material that can be used as a filter and that won't contaminate the engine. I can't the best thing I'm seeing is steel mesh. Any thoughts on this?

 

[Gamble97]

I make these and have been selling a lot of them. I use 2 different types of baffles inside and it's been working out great. Calans catch can uses his own custom filter. There is a difference between baffles and filters. If you can afford it, the Calan catch can is the best can on the market.
I use baffles as it works for me and it keeps the costs down.
I would never use steel wool though. Lot of people do, but I wouldn't trust it when my expensive turbo is at risk.

 

[@TDC]

I make these and have been selling a lot of them. I use 2 different types of baffles inside and it's been working out great. Calans catch can uses his own custom filter. There is a difference between baffles and filters. If you can afford it, the Calan catch can is the best can on the market.
I use baffles as it works for me and it keeps the costs down.
I would never use steel wool though. Lot of people do, but I wouldn't trust it when my expensive turbo is at risk.

Got it! I am going to give this design a try. There are still a couple things I need to mock up and give some thought.

 

[Gamble97]

Do you weld?
I saw a write up years ago about a guy who job welded his. Came out really nice too.

 

[@TDC]

Do you weld?
I saw a write up years ago about a guy who job welded his. Came out really nice too.

Yes. I am just starting out. I've taken classes at our local city college.