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Anyone doing the breather bypass on your M8?

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Anyone doing the breather bypass on your M8?

 
  #1  
Old 11-14-2016, 05:17 PM
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Default Anyone doing the breather bypass on your M8?

Just wondering if anyone is doing this mod on their M8.

There is a lengthy tread over on the Touring page about doing this mod.

I have never had, or at least noticed, any problems with my Dyna so have never messed with the bypass.

Comments?
 
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Old 11-14-2016, 05:19 PM
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I posted this info on the RG using oil post on Page 3

http://www.thunderpress.net/top-stor...2016/09/23.htm
 
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Old 11-27-2016, 06:17 PM
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Would be kind of hard to vent to the outside wouldn't it ? This has got to **** off the catch can crowd.
 
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Old 11-27-2016, 06:47 PM
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A couple of posters over at HTT say they've done the mod. I haven't been tempted to but I've only had my air cleaner cover off once so far.
 
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Old 11-27-2016, 06:52 PM
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If there are no breather bolts in the heads, how the hell did they do it ? Drill and tap the heads ?
 
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Old 11-27-2016, 07:16 PM
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Originally Posted by MikeyTX View Post
Would be kind of hard to vent to the outside wouldn't it ? This has got to **** off the catch can crowd.
There are still breather bolts no different then previous years with the same tubing arrangement located inside the air cleaner directing the vent to your intake. The whole crankcase breather system is different as well as the old breather valve design has changed and thus drastically, as Harley hopes and the consumer as well, eliminates the oil in the AC unit
 

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Old 11-27-2016, 07:23 PM
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GlidingJoe has it right... the only thing I'd add is that Harley still acknowledges it could happen. The troubleshooting part of the service manual still says that overfilling with oil could still result in oil getting into the air cleaner housing (and of course, if it gets there it'll probably get into the throttle body)
 
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Old 11-27-2016, 08:34 PM
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That is interesting. Means the article I read had it wrong. Figures
 
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Old 11-27-2016, 10:25 PM
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just changed the air filters in mine and my wife's M8's at 3000 miles..alas, the bottom of the filters were moderately oil saturated..both were to the Full Hot after 1K services and my subsequent initial report that the A/F's were oil free was premature...appears the old 1/2 way up the dipstick HOT still applies to the new engines
 
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Old 11-28-2016, 05:07 AM
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Can someone educate me? How does the oil level in the pan dictate whether or not there will be oil coming out of the head breather bolts? I mean, the oil is pumped up to the heads and drains back down, so in theory no matter how much oil is in the pan the same amount is going to be pumped to the heads, where the breather bolts are. I just don't see how running the oil level lower would reduce the breather issue.
 
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