I've read a lot of forums and threads regarding the different types of breathers / catch cans that you can purchase and make. One thing everyone agrees on is the baffling required to help prevent oil from soaking and exiting the filter element.

For purchased breather cans, they usually say whether or not they're baffled. But you don't know the type of baffling and whether the bottom drain is baffled as well until you make a purchase - or you can find pics elsewhere.

FYI, this is an Allstar 36109 breather can. I purchased this can because of its relatively low cost $67, and because all connections (including the bottom drain) are 3/8" NPT. For my particular installation I'm going to use the lower port as a combination vent/drain so the 1/4" NPT size that most other other catch cans use is too small.

For $67 this is a well built can. The drain on the bottom is 1/4" NPT screwed into a 3/8" NPT adapter. The baffle plates in the neck up to the filter element have a good overlap in order to trap as much oil as possible, and the neck drops down into the can about a 1/3 of the total length.

Here's what the baffling looks like from the top, bottom, and sides.

 

its a awesome design!had one on my b20vtec for over a year and works great!only i added another port for the back of the block,use two for the valve cover.

 

What are the dimensions? I just bought an OBX-R can and modified it to use a filter. Still need to make baffles inside it, but I haven't had any problems so far.

If only I knew about this, I probably would have bought it.

 

Including the air filter and drain valve it's about 11.25" long. Can is 3" round. Mounting bracket is 5" wide.

Instead of the Endyn type of setup I'm going to do something a little different. I have the Moroso 5.5 qt race pan, so I'm going to use the turbo oil return plug at the top of the pan for a primary vent/drain into the bottom of the can, and I'm going to run the normal lines from the valve cover and "black box" to the can. I might remove the "black box" but I'm just looking for something simple to help vent the crank.

 

Can you pls post a link, so I can pick one of these up thnx.

 

nice, I was looking at buying a cheap ebay one and modifying it but this is MUCH better, just ordered on, then throw in 2 of these (honda part # 11107-PK2-003) a 34.3mm freeze plug from Kragen, some hose and you basically have the endyn setup for <$100

thanks man!

 

that thing is so clean, i think ill get myself one

 

nice question, im also curious.

 

 

There's several places, you can just search "Allstar 36109 breather" (Allstar 36108 for a single port) and find who sells them.

A couple are…
http://www.pitstopusa.com
http://allstarperformance.carshopinc.com
http://www.racepartsusa.com

For about $67 I'm not going to complain much for a dual-port, baffled aluminum breather / catch can. I think I've seen a plastic ones for $55. The Moroso might be a little shorter, but for the $ I'll make this one fit.