Air Cleaner Catch Can Installed On 2017 M8 Stock Air Box, Simple And Diffrent.

[Bill G]

Not all may agree with me here. I was not worried about taking the vapor out of the air box but I wanted to remove any oil condensate carry over into the throttle body. I also did not want to modify my air box at all. I purchased a catch can from DK Custom and installed it like this. I will service the catch can at oil changes to start with. The vapor will still be in the air box with this set up but outside the filter but the oil and condensate should drop out in the catch can in theory.
This set up is a test to see how things go without modifying my stock air box.

You can see the oil in the throttle body in the pic below. My 2017 Tri Glide was right at full or a hair more new on a hot oil level oil check. At my first oil change I set the hot check oil level at 4 dots lower than the full mark with a hot oil level check. This has helped or prevented a lot of the carry over on my other Harley's in the past.

See pic's below. It's pretty straight forward what I did.

Ride Safe All,
Bill G

[MB1953]

Nice clean installation, Bill. I had the Discrete Breather on my '14, and have been waiting for the right time to do the same thing on my new '17. Now that I have 5K miles on it, I think now is the time, and your setup looks just right!

Thanks for the idea and the motivation!

Mark

[DK Custom Products]

Interesting.

You are still getting the hot, oxygen depleted air going into your airbox, but that is certainly better than feeding it directly into the throttle body.

As you said, the really good improvement is that you're not getting the oily substance coating your throttle body and your combustion chambers.

Pretty cool idea for minimizing EPA mandated damage while keeping the airbox stock.

Kevin

[Trampas]

Looks pretty simple, let us know how it works out for you. I like the idea of using the stock air cleaner

Looks like you drilled a small hole in air cleaner for the tie down to hold the hose with the catch can.



All for now Trampas

[Bill G]

Looks pretty simple, let us know how it works out for you. I like the idea of using the stock air cleaner

Looks like you drilled a small hole in air cleaner for the tie down to hold the hose with the catch can.



All for now Trampas

Yes that's what I did. There is just enough meat on the edge of the filter to drill the small hole without any damage to the filter. It turned out just right.

Ride Safe,
Bill G

[Bill G]

Interesting.

You are still getting the hot, oxygen depleted air going into your airbox, but that is certainly better than feeding it directly into the throttle body.

As you said, the really good improvement is that you're not getting the oily substance coating your throttle body and your combustion chambers.

Pretty cool idea for minimizing EPA mandated damage while keeping the airbox stock.

Kevin

Thank's Kevin,

Kevin yes your 100% correct on the hot gas still going into the air box. Like you said at least it's on the outside of the air filter. This was the compromise made not wanting to modify the air box. As you mentioned my main concern with this mod was getting the oily substance out of the throttle body.

Living here in California I just did not want to cut any holes or modify my factory air box. The cool thing is there is no visible sign to the air box that this mod was done. I am thinking this simple mod will be an improvement that was cost effective and well worth doing.

Ride Safe My Friend,
Bill G

[DK Custom Products]

Thank's Kevin,

Kevin yes your 100% correct on the hot gas still going into the air box. Like you said at least it's on the outside of the air filter. This was the compromise made not wanting to modify the air box. As you mentioned my main concern with this mod was getting the oily substance out of the throttle body.

Living here in California I just did not want to cut any holes or modify my factory air box. The cool thing is there is no visible sign to the air box that this mod was done. I am thinking this simple mod will be an improvement that was cost effective and well worth doing.

Ride Safe My Friend,
Bill G

Yes, I think you will probably get 75% of the benefit, which is significant, of a full EBS, but with close to 0% of the exposure, should any EPA policing start on motorcycles in Cali.

Kevin