Catch cans
01-02-2019, 07:31 AM
#2
Super Moderator
Mishimoto makes them for the JK 3.6L and 3.8L.
I don't have one installed. Personally, I feel they're all over-priced, especially the Mishimoto for what they are and if I were to add one, I would likely build one myself. To me the key features of an oil catch can are the size so you're not constantly having to empty it, and ease of emptying it when it does get full. Other than that, it's just a can which works on the premise of gravity, where you can just throw some steel wool in the bottom of the can if you want a "baffled" one.
I've been tossing around the idea of a DIY oil catch can. I've been thinking of starting with a plumbing pipe with a couple end caps (think pipe bomb), and mounting a couple nipples on the pipe as shown in the video. The part I'm trying to figure out is that I would like to mount the nipples near the top and be able to just twist and unscrew the bottom pipe section for ease of emptying it, instead of monkeying around with tools to remove the hose and any bracket connections.
DIY oil catch can.
I don't have one installed. Personally, I feel they're all over-priced, especially the Mishimoto for what they are and if I were to add one, I would likely build one myself. To me the key features of an oil catch can are the size so you're not constantly having to empty it, and ease of emptying it when it does get full. Other than that, it's just a can which works on the premise of gravity, where you can just throw some steel wool in the bottom of the can if you want a "baffled" one.
I've been tossing around the idea of a DIY oil catch can. I've been thinking of starting with a plumbing pipe with a couple end caps (think pipe bomb), and mounting a couple nipples on the pipe as shown in the video. The part I'm trying to figure out is that I would like to mount the nipples near the top and be able to just twist and unscrew the bottom pipe section for ease of emptying it, instead of monkeying around with tools to remove the hose and any bracket connections.
DIY oil catch can.
Last edited by Rednroll; 01-02-2019 at 07:42 AM.
01-02-2019, 11:41 AM
#3
JK Enthusiast
I bought the big Moroso one.
https://www.moroso.com/moroso-shop-browse/60000/6006/
Cheaper than Mishimoto’s, mounts just fine and easy to follow directions. It has a nice little ball valve at the bottom to drain it. After I took my throttle body off for a cleaning I was aghast at how much oil was inside the intake manifold.
https://www.moroso.com/moroso-shop-browse/60000/6006/
Cheaper than Mishimoto’s, mounts just fine and easy to follow directions. It has a nice little ball valve at the bottom to drain it. After I took my throttle body off for a cleaning I was aghast at how much oil was inside the intake manifold.
01-02-2019, 06:21 PM
#5
Super Moderator
This is the part which I don't like when I looked at oil catch cans. Maybe there's something I'm not understanding which is very possible. However, my thought is that the catch can is typically mounted near the top of the engine level. You unscrew the valve, and oil pours out and downward, where you need a bucket or something underneath it to catch the oil, all while hoping the oil pouring out isn't splattering all over any parts in the nearby vicinity underneath it. Plus the valve is on the bottom of the can ;which depending on where you mounted it and the space, could be difficult to reach with your hand from the top of the engine. That all seems like a PIA to me, if that's how it works.
01-02-2019, 07:57 PM
#6
JK Enthusiast
This is the part which I don't like when I looked at oil catch cans. Maybe there's something I'm not understanding which is very possible. However, my thought is that the catch can is typically mounted near the top of the engine level. You unscrew the valve, and oil pours out and downward, where you need a bucket or something underneath it to catch the oil, all while hoping the oil pouring out isn't splattering all over any parts in the nearby vicinity underneath it. Plus the valve is on the bottom of the can ;which depending on where you mounted it and the space, could be difficult to reach with your hand from the top of the engine. That all seems like a PIA to me, if that's how it works.
As to OPs question. Yes I am getting some oily stuff out. Not much I’d say maybe 1/2 to 1/4 ounce at most after about 1000 miles.
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01-03-2019, 07:42 AM
#8
JK Super Freak
Thread Starter
Ordered. Wish I did this when it was new. Ih well. Better late than never. At almost 140k miles, it runs fine and this will only help it stay that way. It does ping at times under load amd especially on hot days though. Sounds like a can of pennies. Not always, but occasionally.
01-11-2019, 01:26 PM
#9
JK Freak
Ordered. Wish I did this when it was new. Ih well. Better late than never. At almost 140k miles, it runs fine and this will only help it stay that way. It does ping at times under load amd especially on hot days though. Sounds like a can of pennies. Not always, but occasionally.
01-12-2019, 03:17 PM
#10
JK Super Freak
Question first...have you changed your PCV valve out? It is super cheap to change, and easy to do. Mine was less than $10, but that was over 5 years ago. It's right on top of the engine, but can be a little bit of a bear to get out without the proper tools. I was consuming a quart of oil every 1000 miles or so when I first bought my '07 Wrangler. I think that's why I got such a good deal on it! Once I changed out the PCV valve, I haven't lost a drop of oil between oil changes. I believe the catch cans are really designed for higher performance engines. The engines vaporize the oil, so a PCV valve won't catch it. Therefore it ends up accumulating into the catch can. I run one on my 440 stroker in my Jeep SRT8. I have a few tablespoons of oil every 1000 miles or so.