Here is a link to D K Customs doing the drill and tap the stand offs on the air cleaner for the breather bolts
http://www.dkcustomproducts.com/acl/...her-system.htm
Nuff Said," Were Burnin Daylight, Lets Ride"(Sober 37 years)
Current ride : 2021 FREEWHEELER M8, oldest ride 1960 FL
Well I finally took a look at what I have installed. Looks like just an aftermarket filter. My question is does changing out the 103 stock cover really improve air flow or does the whole assembly need to be replaced to see any improvement?
Don't SEEK attention, PAY attention!
"Great spirits have always encountered violent opposition from mediocre minds." Albert Einstein.
2015 Harley Tri Glide
Don't know that you can change just the cover on a stock set up.
Harley's, for many years, have (thanks to the EPA) been using air BOXES. They are two part. A plastic backplate that is 1/2 of the box and the cover which matches that backplate/box is the other half.
This results in the filter element being enclosed with just a small opening up front. This is done to reduce the noise generated by the engine sucking air in, plus it hides a bit of the internal engine noise too.
The "upside" of this is that it makes the engine noise a bit quieter so Harley can have a bit louder exhaust note and still meet the EPA noise standards.
The downside is that it chokes down the air flow into the engine AND that enclosed box makes the air going into the engine hotter...these both reduce performance. See complete report on this subject HERE.
To see noticeable improvement there are two choices:
1. Get a Performance Intake, like at this LINK This will take care of all the performance inhibiting issues regarding the stock air cleaner set-up.
2. Cut away the plastic on the factory backplate, leaving only the back, flat portion in place. Use a free flowing filter element. Install an External Breather System, and you can then use your factory cover and get a noticeable improvement in performance.
Kevin
Don't SEEK attention, PAY attention!
"Great spirits have always encountered violent opposition from mediocre minds." Albert Einstein.
2015 Harley Tri Glide
Ok, you have the AN BS air cleaner...that is more than just a filter upgrade, that is an entirely new air cleaner set-up. You can run the stock cover, like you are, or you can run a whole bunch of different covers.
Check out this LINK. Any cover at that link that says it will fit a 606 or an 0800, will also fit your AN BS. I believe there are 10 or 11 choices there.
You may want to look at adding an External Breather System, it will make it perform better, and your engine will thank you. The EBS's at this LINK will fit the AN BS.
The photo below is what I am running on my TG, and it will fit on your AN BS.
Kevin
The air filter in there has a big lip on it like this.
Don't SEEK attention, PAY attention!
"Great spirits have always encountered violent opposition from mediocre minds." Albert Einstein.
2015 Harley Tri Glide
That is what I thought. Thanks for your help.
Don't SEEK attention, PAY attention!
"Great spirits have always encountered violent opposition from mediocre minds." Albert Einstein.
2015 Harley Tri Glide
Don't SEEK attention, PAY attention!
"Great spirits have always encountered violent opposition from mediocre minds." Albert Einstein.
2015 Harley Tri Glide