Anyone doing the breather bypass on your M8?
#341
i've been following this thread and some of the information/opinions are laughable. I subscribe to the external breather group and have been riding a hd since 72, well before the time when they started to vent the crankcase into the carburetor now throttle body. I simply vent to the ground and can also confirm that none of the vented oil ends up anywhere on my underside/saddlebags/tires. Granted i'm currently riding a 14 flhtk so maybe the m8 vents more oil than the twin-cam 103 but i wouldn't think so. I think what really deters most folks from doing this mod has to do with warranty because it is illegal to modify an epa requirement. Also i felt that it would be better to not have hot oxygen deprived gases being pumped directly into my stage 1 cold air intake..
#342
Vanishing Vapour gotta get some!
I've been following this thread and some of the information/opinions are laughable. I subscribe to the external breather group and have been riding a HD since 72, well before the time when they started to vent the crankcase into the carburetor now throttle body. I simply vent to the ground and can also confirm that none of the vented oil ends up anywhere on my underside/saddlebags/tires. Granted I'm currently riding a 14 FLHTK so maybe the M8 vents more oil than the twin-cam 103 but I wouldn't think so. I think what really deters most folks from doing this mod has to do with warranty because it is illegal to modify an EPA requirement. Also I felt that it would be better to not have hot oxygen deprived gases being pumped directly into my stage 1 cold air intake..
Did you see the pictures from a guy who ran a pipe directly from the one breather outlet,in a closed loop,to the other?
Guaranteed to cause damage all due to these false prophecies!
#343
#344
#345
I simply drilled and tapped my high flow breather back plate at the head mounting tabs. Then I filled the stock holes with a screw and JB Weld. Ran a small fuel line with a T in it over the throttle body and down the frame behind the tranny to an Inline filter. Just clean it once in a while with diesel. Works perfect and looks OEM.
BTW this is what my piston looked looked like with 1k on it b4 117 kit. Putting oil in the combustion chamber is dumb.
BTW this is what my piston looked looked like with 1k on it b4 117 kit. Putting oil in the combustion chamber is dumb.
Last edited by Timberjkd; 01-13-2019 at 11:49 AM.
The following users liked this post:
splattttttt (01-13-2019)
#346
I simply drilled and tapped my high flow breather back plate at the head mounting tabs. Then I filled the stock holes with a screw and JB Weld. Ran a small fuel line with a T in it over the throttle body and down the frame behind the tranny to an Inline filter. Just clean it once in a while with diesel. Works perfect and looks OEM.
BTW this is what my piston looked looked like with 1k on it b4 117 kit. Putting oil in the combustion chamber is dumb.
BTW this is what my piston looked looked like with 1k on it b4 117 kit. Putting oil in the combustion chamber is dumb.
The following users liked this post:
Peter Quinn (01-13-2019)
#348
#349
Good for you.My 2001 Carburated Springer has breather pipes.Guess the world left you behind a long time ago?
Did you see the pictures from a guy who ran a pipe directly from the one breather outlet,in a closed loop,to the other?
Guaranteed to cause damage all due to these false prophecies!
The following users liked this post:
Softy 103 (01-13-2019)
#350
Harley Bouncer