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Evo motor air cleaner

Discussion in 'Motorcycle Tech Talk' started by BillM, Feb 3, 2014.

  1. BillM

    BillM Member

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    I have a 91 Electra glide and the crankcase vents through a tube into the air cleaner from the crankcase. Can i change it to vent through the heads with the crossover tube like in the later model carburetor motors?
    BillM, Feb 3, 2014
    #1
  3. cowboy

    cowboy Moderator Staff Member

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    My 93-94 Models service manual , shows it from the heads to the AC backing plate , Hope that helps & welcome to Bike talk
    cowboy, Feb 3, 2014
    #2
  4. Lucifer

    Lucifer Well-Known Member

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    You can,fair amount of work though...You'd have to drill and tap the heads to accept the breather bolts,you'd need new rocker boxes,bottom and middle section at least,install umbrella valves,then down to the cam cover,not sure if you'd need to replace the cover or not,but the gaskets are different in head and bottom breathers...easiest is just to route the bottom breather to atmosphere to keep the air/oil mist out of the intake...just run a hose from the breather and zip tie it to a frame rail,so any oil mist will not vent in front of the rear tire...
    Lucifer, Feb 4, 2014
    #3
  5. joshbob

    joshbob Well-Known Member

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    Eggsactly what I did with my shovel. Works like a charm.
    joshbob, Feb 4, 2014
    #4
  6. BillM

    BillM Member

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    Thanks for the feedback
    BillM, Feb 5, 2014
    #5
  7. Wideglide85

    Wideglide85 Active Member

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    The cam cover is different too, the parts catalog lists one for 84-92, and another one for 93-99.
    Wideglide85, Feb 5, 2014
    #6
  8. cowboy

    cowboy Moderator Staff Member

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    that's some good info all the way around
    cowboy, Feb 5, 2014
    #7

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