Anyone doing the breather bypass on your M8?
#281
The pics above are pretty consistent with what I have seen the last two years with my M8. I installed a Stage I air cleaner and from there the problems started. It appeared the there was not sufficient air flow to suck in all the moisture/oil vapor into the intake, so it simply drooled down into the air cleaner which eventually blew back on the right side saddlebag. I understand that the MOCO has come out with longer rubber hoses which are supposed to eliminate the drooling problem but I have not purchased them. Instead I drilled the air cleaner back plate and ran some homemade rubber hoses down from the Stage I breather bolts and exited the air cleaner and run those to the bottom of the frame. No problems. You really should not have to do this on a new vehicle if the manufacture does the right thing and takes care of their shortcomings.
#282
#283
#284
#285
When I replaced my stock filter the bottom was soaked with oil. I installed a K&N 1717 in it's place. I twisted the tube, that goes into the filter, a quarter turn towards the rear. I picked up a length of wiper cleaning tubing and a plastic 7/32 butt splice. I then connected the tubing and drilled a hole through the bottom of the backing plate. The tubing is run down to the frame and zip tied to the frame. The hole is snug and the zip tie keeps it from touching the exhaust pipe. I installed a rubber plug in the back of the new filter where the tubing is supposed to go.
Last edited by Cazador; 01-06-2019 at 10:52 AM.
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Birdog (10-31-2019)
#286
the one thing that has bothered me, and may be completely unfounded, is the positioning of breather tubes expecting the oily residue to work its way uphill..just seems like if they point downward upon exiting the breathers it would be more efficient and effective in evacuating the mess away from the breathers...but like I said, maybe in real world application it doesn't matter much?
#287
the one thing that has bothered me, and may be completely unfounded, is the positioning of breather tubes expecting the oily residue to work its way uphill..just seems like if they point downward upon exiting the breathers it would be more efficient and effective in evacuating the mess away from the breathers...but like I said, maybe in real world application it doesn't matter much?
But I did run my lines downward to make sure the muck passes to the Catch Can...
Last edited by Sam D.; 01-06-2019 at 09:42 AM.
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KeyResults (12-06-2021),
mjwebb (01-06-2019)
#288
the one thing that has bothered me, and may be completely unfounded, is the positioning of breather tubes expecting the oily residue to work its way uphill..just seems like if they point downward upon exiting the breathers it would be more efficient and effective in evacuating the mess away from the breathers...but like I said, maybe in real world application it doesn't matter much?
The following users liked this post:
mjwebb (01-06-2019)
#289
I just did a By-Pass to my CVO Ventilator AC,,, used a D&K Customs Catch Can,,, There is definitely pressure pumping thru the tubes... you can feel the air pulsate out of the holes in the top of the catch can...
But I did run my lines downward to make sure the muck passes to the Catch Can...
But I did run my lines downward to make sure the muck passes to the Catch Can...
#290
the one thing that has bothered me, and may be completely unfounded, is the positioning of breather tubes expecting the oily residue to work its way uphill..just seems like if they point downward upon exiting the breathers it would be more efficient and effective in evacuating the mess away from the breathers...but like I said, maybe in real world application it doesn't matter much?
The following users liked this post:
mjwebb (01-06-2019)