Decided to install a breather tank on my dad's 09 Triglide so the engine didn't have to ingest that nasty sludge that comes out of the breathers. Over time venting the rocker boxes into the throttle body to be burned will carbon up the piston top which after time could cause a rise in compression and pinging.
This is the piston of my 06 Ultra when it was a mild 95" build and venting the rocker boxes into the throttle body, this piston only has 8,000 miles on it.

This is my 06 Ultra with a different 95" build which used a 10.1 piston and rocker boxes vented externally, this piston has 27,000 miles on it.

The modification I did was fit external vent lines to the stage 1 Screamin Eagle air filter backing plate, the same could be done with any backing plate that vents into the rocker boxes like this one does. Since the trike has a lot of air moving around I choose to use a breather tank vs venting to the ground, venting to the ground would have coated the under side of the trike pretty badly with an oily residue due to all the air movement.
I chose the 1 pint Jaz PN 605-325-01 mini breather tank with .25 fittings, I bought most everything from Amazon. This is the tank http://www.amazon.com/gp/product/B002RL3E62/ref=oh_details_o03_s00_i00?ie=UTF8&psc=1
I installed the tank on the left side down tube and oriented it so the vent door on the fairing lower could be closed, I used some rubber strips to keep from marking the finish on the down tube.

I used Russell PN 660423 http://www.amazon.com/gp/product/B002Q3EQCC/ref=oh_details_o08_s01_i01?ie=UTF8&psc=1 which are 1/8" pipe to -4 an. If you have throttle by wire you need to make sure you place the fitting so it or the hose does not hit. You need to drill and tap the hole for the 1/8" pipe thread in the cavity where the breather port enters. Locate one fitting for the rear cylinder and one for the front.


I used Russell PN 632013 6' long -4 an proclassic hose which was enough to route the lines where I needed http://www.amazon.com/gp/product/B002Q3ERBC/ref=oh_details_o08_s02_i00?ie=UTF8&psc=1 . I also used 2 Russell PN 610013 -4 an straight hose fittings http://www.amazon.com/gp/product/B002Q3AZMM/ref=oh_details_o08_s01_i00?ie=UTF8&psc=1.
You will have to plug the ports that where used to vent the rocker boxes in to the throttle body, I just used some Ultra Copper silicon and stuffed it in to the port and smoothed it over. I didn't want to drill, tap and install a set screw because its a good way to have something come loose and be ingested into the engine to do damage.

I picked up a couple rubber lined clamps to run the line from the rear cylinder through, I used the lifter block bolt to hold them in place.
In this picture you will notice some covering over top of the braided hose which is held with zip ties. This covering is to protect the braided hose from the hot exhaust pipe. The covering is Heatshield products PN 204002 heat shield sleeve which is rated for continuous 1,100 degree exposure and 2,000 degrees intermittent, one package was enough to do both lines http://www.amazon.com/gp/product/B004GNLGTQ/ref=oh_details_o08_s00_i00?ie=UTF8&psc=1.

This is a shot of the hose from the rear cylinder to the right side of the breather tank, you can also see the hose from the front cylinder to the left side of the breather tank.

This is the breather tank with a rain sock over top of the filter to protect it from rain. It comes from Outterwears.com PN 10-1132 http://outerwears.com/proddetail.asp?prod=362.

This is the completed right side of the engine with the air cleaner cover installed.

This is the piston of my 06 Ultra when it was a mild 95" build and venting the rocker boxes into the throttle body, this piston only has 8,000 miles on it.

This is my 06 Ultra with a different 95" build which used a 10.1 piston and rocker boxes vented externally, this piston has 27,000 miles on it.

The modification I did was fit external vent lines to the stage 1 Screamin Eagle air filter backing plate, the same could be done with any backing plate that vents into the rocker boxes like this one does. Since the trike has a lot of air moving around I choose to use a breather tank vs venting to the ground, venting to the ground would have coated the under side of the trike pretty badly with an oily residue due to all the air movement.
I chose the 1 pint Jaz PN 605-325-01 mini breather tank with .25 fittings, I bought most everything from Amazon. This is the tank http://www.amazon.com/gp/product/B002RL3E62/ref=oh_details_o03_s00_i00?ie=UTF8&psc=1
I installed the tank on the left side down tube and oriented it so the vent door on the fairing lower could be closed, I used some rubber strips to keep from marking the finish on the down tube.

I used Russell PN 660423 http://www.amazon.com/gp/product/B002Q3EQCC/ref=oh_details_o08_s01_i01?ie=UTF8&psc=1 which are 1/8" pipe to -4 an. If you have throttle by wire you need to make sure you place the fitting so it or the hose does not hit. You need to drill and tap the hole for the 1/8" pipe thread in the cavity where the breather port enters. Locate one fitting for the rear cylinder and one for the front.


I used Russell PN 632013 6' long -4 an proclassic hose which was enough to route the lines where I needed http://www.amazon.com/gp/product/B002Q3ERBC/ref=oh_details_o08_s02_i00?ie=UTF8&psc=1 . I also used 2 Russell PN 610013 -4 an straight hose fittings http://www.amazon.com/gp/product/B002Q3AZMM/ref=oh_details_o08_s01_i00?ie=UTF8&psc=1.
You will have to plug the ports that where used to vent the rocker boxes in to the throttle body, I just used some Ultra Copper silicon and stuffed it in to the port and smoothed it over. I didn't want to drill, tap and install a set screw because its a good way to have something come loose and be ingested into the engine to do damage.

I picked up a couple rubber lined clamps to run the line from the rear cylinder through, I used the lifter block bolt to hold them in place.
In this picture you will notice some covering over top of the braided hose which is held with zip ties. This covering is to protect the braided hose from the hot exhaust pipe. The covering is Heatshield products PN 204002 heat shield sleeve which is rated for continuous 1,100 degree exposure and 2,000 degrees intermittent, one package was enough to do both lines http://www.amazon.com/gp/product/B004GNLGTQ/ref=oh_details_o08_s00_i00?ie=UTF8&psc=1.

This is a shot of the hose from the rear cylinder to the right side of the breather tank, you can also see the hose from the front cylinder to the left side of the breather tank.

This is the breather tank with a rain sock over top of the filter to protect it from rain. It comes from Outterwears.com PN 10-1132 http://outerwears.com/proddetail.asp?prod=362.

This is the completed right side of the engine with the air cleaner cover installed.
