Milwaukee Eight (M8) 2017 and up M8 Air and Liquid Cooled discussion
Sponsored by:
Sponsored by:

Anyone doing the breather bypass on your M8?

Thread Tools
 
Search this Thread
 
  #121  
Old 08-28-2017, 11:25 AM
stixvrad's Avatar
stixvrad
stixvrad is offline
Seasoned HDF Member
Join Date: Nov 2016
Location: Northern New Jersey
Posts: 7,021
Received 8,076 Likes on 3,319 Posts
Default

Originally Posted by oldbie
What size bottle is that?
6.4 OZ . Its a 2 stroke oil container. The thing fits snug and wont budge.
So far, no effect on running ( a though was, it might have caused a choking effect being so big). It pulls all the way to the rev limiter.
I just made sure the clear hose going into it, is far off the bottom otherwise it would get blocked off by any oil that collects.
 
The following users liked this post:
oldbie (08-28-2017)
  #122  
Old 08-28-2017, 11:41 AM
lp's Avatar
lp
lp is offline
Seasoned HDF Member
Join Date: Jan 2006
Location: Charleston, SC
Posts: 11,286
Received 2,720 Likes on 1,546 Posts
Default

That's genius! I wish I had thought of that. Instead I bought this little do-dad from ebay awhile back.
It's shaped for a Rushmore intake but I re-purposed it after picking up my 17. It collects oily vapor like a boss.

The pic below is after a 6000 mile ride.





 

Last edited by lp; 08-28-2017 at 11:45 AM.
The following users liked this post:
Max Headflow (08-28-2017)
  #123  
Old 08-28-2017, 11:55 AM
stixvrad's Avatar
stixvrad
stixvrad is offline
Seasoned HDF Member
Join Date: Nov 2016
Location: Northern New Jersey
Posts: 7,021
Received 8,076 Likes on 3,319 Posts
Default

Originally Posted by lp
That's genius! I wish I had thought of that. Instead I bought this little do-dad from ebay awhile back.
It's shaped for a Rushmore intake but I re-purposed it after picking up my 17. It collects oily vapor like a boss.

The pic below is after a 6000 mile ride.





Thanks.. I credit it to good bourbon and not throwing anything out,LOL.! Hey, your's works too and that's all that matters. Oil on a brand new bike just wasn't cutting it.
 
  #124  
Old 08-28-2017, 02:52 PM
Max Headflow's Avatar
Max Headflow
Max Headflow is online now
Seasoned HDF Member
Join Date: Dec 2005
Location: poway
Posts: 16,092
Received 5,245 Likes on 3,623 Posts
Default

Originally Posted by lp
That's genius! I wish I had thought of that. Instead I bought this little do-dad from ebay awhile back.
It's shaped for a Rushmore intake but I re-purposed it after picking up my 17. It collects oily vapor like a boss.

The pic below is after a 6000 mile ride.
I like it.. A good way to have a smaller catch and still breath.. Gravity will drain the oil out of the foam.. Needs a drain on the bottom tho..
 
  #125  
Old 08-28-2017, 03:57 PM
goblue90's Avatar
goblue90
goblue90 is offline
Road Master
Join Date: Apr 2014
Location: Philly Burbs
Posts: 1,004
Received 334 Likes on 193 Posts
Default

Originally Posted by stixvrad
Thanks.. I credit it to good bourbon and not throwing anything out,LOL.! Hey, your's works too and that's all that matters. Oil on a brand new bike just wasn't cutting it.
That's pretty cool. I like that it's hidden.
 
The following users liked this post:
stixvrad (08-29-2017)
  #126  
Old 08-28-2017, 04:02 PM
goblue90's Avatar
goblue90
goblue90 is offline
Road Master
Join Date: Apr 2014
Location: Philly Burbs
Posts: 1,004
Received 334 Likes on 193 Posts
Default

Originally Posted by Max Headflow
I have found most of the smaller catch cans don't work. It might help if there is some breathable foam inside the container to catch and allow drip into the container but the outside fillers simply catch the mist and eventually drip..

Bigger ones work but I still open vent them out and away from the bike.

From what I've seen, ring seal and motor crankcase seal big difference in how much a motor mists. Might want to check those causes. Motor crankcase seal is a big one.. The valves in the head need to be working well and the motor can't be pulling air in from outside the motor. I've seen a lose dipstick ans blown cylinder base gasket cause the head breathers to bleed.

Are you having the any of the tranny to primary transfer issue?? Any mods to the motor?

I have to admit that I've been lucky, my M8 RK has a stage 2 kit (stock mufflers) and breather bleeding hasn't been an issue. Still others cans have the issue..
Only running stage 1 and no tranny to primary transfer issue. I envy your good fortune. My previous harleys (Sportster 48 and Softail Slim S) also puked out a lot of crap. Anyway, here's a picture of the blowby making its way down the tube into the catch can. I took the picture at a rest stop after 75 miles on the turnpike. I put on a total of 300 miles today and will check the can after the bike has cooled down.


 
  #127  
Old 08-28-2017, 04:05 PM
goblue90's Avatar
goblue90
goblue90 is offline
Road Master
Join Date: Apr 2014
Location: Philly Burbs
Posts: 1,004
Received 334 Likes on 193 Posts
Default

Originally Posted by stixvrad


I tried that exact unit and it allowed stuff to escape out the small holes in it.Ended up with oil on my exhaust again.

I went back to my home made design. Oil free for 500 miles now.
That's DIY at its finest. Thanks for sharing.
 
The following users liked this post:
stixvrad (08-29-2017)
  #128  
Old 08-28-2017, 07:28 PM
lp's Avatar
lp
lp is offline
Seasoned HDF Member
Join Date: Jan 2006
Location: Charleston, SC
Posts: 11,286
Received 2,720 Likes on 1,546 Posts
Default

Originally Posted by Max Headflow
I like it.. A good way to have a smaller catch and still breath.. Gravity will drain the oil out of the foam.. Needs a drain on the bottom tho..
Thanks. It works very well. I didn't want a drain tube showing so I just clean it out when I clean the filter.

That DIY bottle though... just awesome.
 
The following users liked this post:
stixvrad (08-29-2017)
  #129  
Old 10-08-2017, 11:34 PM
LA VIC's Avatar
LA VIC
LA VIC is offline
Road Master
Join Date: Dec 2009
Location: Louisiana
Posts: 843
Received 43 Likes on 41 Posts
Default

Originally Posted by lp
That's genius! I wish I had thought of that. Instead I bought this little do-dad from ebay awhile back.
It's shaped for a Rushmore intake but I re-purposed it after picking up my 17. It collects oily vapor like a boss.

The pic below is after a 6000 mile ride.





I like that do-dad! I wouldn't mind doing the same. I tried to find on EBay but no luck. You by chance have a link?
 
  #130  
Old 10-09-2017, 02:23 AM
splattttttt's Avatar
splattttttt
splattttttt is offline
Ultimate HDF Member

Join Date: Jul 2014
Location: MASS_hole
Posts: 5,652
Received 430 Likes on 379 Posts
Default

It looks like a sponge.
And it should work just fine at letting vapors through and catching liquid. But will the hot vapor still interfere with the cool air drawn in by the intake?
 
The following users liked this post:
Zonktified (03-31-2021)


Quick Reply: Anyone doing the breather bypass on your M8?



All times are GMT -5. The time now is 09:51 AM.