Installed Custom Catch Can 8/5/2017
This took a long while to come together :lol: Bought the ebay can back in April, and just got it installed. But it was a mix of waiting for a tool to finish it and accumulating parts for it. This was supposed to be a cheap modded can.. ended up being a bit more than cheap which is partially why it took so long lol.
Here it is, the typical $20 ebay catch can (and included parts) in all its glory.
Here is where it gets interesting....
I based the inside design and mods from another design on this website,
http://forum.grrrr8.net/showthread.php?t=38308 They provided a handy template for download that I used.
I cut out the paper template then transferred to card board for a stiffer design to test fit
This will create a baffle between the two ports up top, you can see the cardboard inside
Another "borrowed" design element, Filtrete Basic air cleaning filter. Recommended by BigBlueLB756 on this forum, found in his mega thread which inspired me
Cheap Catch Can Option Bought this from Lowes, they started offering free shipping no minimum which is crazy (and awesome).
Needless to say I have a ton extra, only used about 6" x 2" worth of this stuff lol.
Here is where I started deviating from the original baffle mod I was copying. Adding a 2nd oil shield baffle to outgoing side, and also a shelf for 2nd layer of Filtrete filter on top of that.
Here is the rough cut of the new baffle. Some really thin Aluminum got from Home Depot for an exorbitant price as far as I'm concerned.. Wanted thicker aluminum but this actually turned out really nice, could bend it by hand to make adjustments and plenty sturdy.
This is how it went together, and shows the capacity of the can with baffle if I were to let it fill up.
Pics from top with baffle in place
With scrubber added to intake side
Stainless scrubber on intake side, Filtrete on exhaust side
Final Filtrete filter on both sides
On to the mounting bracket, this is thicker aluminum I had on hand.
My bracket in top middle, bottom left is the one that came with it. The right side is the bolt through side of my bracket.
Used some carriage bolts and smashed them into the aluminum plate so they "locked", this will pass through to my bracket as seen below
Looking around for a place to mount, I didn't want the can in the way of anything, found a nifty spot right next to ECM, so this is where it goes.. for now..
Carriage bolt bracket on inside of the ECM cover, covered it with some tape in case it could contact anything in there, but shouldn't.
Painted it up for final install
This part of the build was completed fairly quickly, and then I spent about 3 months waiting and deciding what to do about the drain valve. This can came with a standard bolt in the bottom, which no valve would go into easily, so I wanted to tap it out for NPT. Seems like this must be the only tool my dad doesn't have, a larger sized NPT tap so I was trying to figure out the cheapest way to buy the one I needed since this build was already adding up in the $$ department and didn't necessarily want to be spending a lot on a tool that won't be used much. Ended up getting the cheapo Harbor Freight set, 1/4" through 1/2" NPT taps and used 1/4"
So this is the result of chucking up tap in drill press (to use by hand to keep the hole straight).
Went a bit overkill on the actual valve, was planning to buy a cheaper one on ebay but splurged for the Stainless Steel :roll: to ward off galvanic corrosion, as if that could be a concern for this lol. At any rate if I don't even use this can I should be able to recover the valve for something else...
I sealed the edges of the baffle down the sides with RTV, and also applied some to keep the Filtrete in, as well as all along the top of the baffle so hopefully it ended up air tight to about halfway down the can.
Completed Can!
Install Pics
Secured with some zipties
A bit of wireloom and a ziptie on that back hose so it doesn't rub on the fuel line locks to badly
Synopsis...
I wouldn't build this can again, at least not the same way. A better candidate for a similar mod to this would probably be those square cans with the 2 ports on top. They don't have a hole on the bottom at all and you have more choice to drill and tap your own size. I was forced to go with 1/4" NPT or bigger which is a fine size but it was kind of a one shot deal and aluminum is soft so not super forgiving for errors.
Another downfall of the ebay can is the 2 holes that you use for mounting. They included tiny allen bolts, with about 1/4" of thread on them that thread into the can. I almost lost those bolts a couple times, which was super annoying. I wanted to use some thread locker on them since the road I drive is so bad I may as well be offroading out in the sticks with the way the pavement is on my way to work. I got them tight and marked with sharpie to see if they back out... will have to watch that. The large ports on the top are not using NPT style thread either, just straight threads so you have to use their fittings, which wasn't a problem just don't loose them.
I really like the mounting location but it may not work out. As soon as I had attached it and was pulling it around I noticed that the cover is fairly loose and allowed a lot of movement. Clearly it isn't meant to hang a few pounds of metal off the end of it, so I ended up adding another zip tie to the bottom of the cover which stiffened it up a lot. The actual bracket attachment is on their nicely though. So we'll see how this all works out. I haven't checked it to drain yet, but I do see the viewing pipe is yellowed so oil is going through it to some extent.
Also I was going to use hose clamps, it even came with them but they wouldn't fit on the 3/8" line, and I looked through a pile of clamps and didn't find any suitable so decided to leave it as is. The stock PCV system doesn't have any clamps either so I don't think they are in danger of blowing off. The hose to the barbs on the can are on their really tight, the hose to the other ends were on their tight as well. I have OEM hose in the truck just in case
Embarassing Parts List
Ebay can $19~
Stainless 1/4" NPT valve (ebay) $11.19
Gates 3/8 Fuel Hose, 8ft (only needed 6-7ft $14.33
Filtrete BASIC washable adjustable air filter (lowes) $6.33
Stainless Scotch Brite scrubber ~$2
1' x 1' Stainless 18 GA (I think, maybe 16GA) ~$12
Ultra Black RTV ~$6
Had these items:
Rivets, Scrap aluminum for bracket, Plumbers pipe thread tape, Zip ties...
Bonus item!
Harbor Freight 1/4" to 1/2" NPT pipe tap set, $15