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Wanted - Single outlet crankcase breather

Discussion in 'Classifieds' started by bosco659, Sep 1, 2020.

  1. bosco659

    bosco659 XS650 Addict XS650.com Supporter

    Looking to convert the crankcase breather on my ‘76 from a dual outlet to a single. Please message me if you have a single for sale and how much you are asking for it. Thx
     
  2. OHRider

    OHRider XS650 Addict XS650.com Supporter

    I changed mine to a single outlet. The “Y” outlet is just pressed in and very easy to remove. I taped mine with a 3/8-18 pipe tap and got a fitting at a hardware AD6FFA4D-5F70-4FEB-AAA6-17C6DDB9021C.jpeg 8C1D9657-6E8A-4681-BCBD-6CC0E4B696A8.jpeg
     
  3. bosco659

    bosco659 XS650 Addict XS650.com Supporter

    Great thx for the tip. I wasn’t sure if the fitting was pressed in or cast that way.
     
    MaxPete, Mailman and OHRider like this.
  4. bosco659

    bosco659 XS650 Addict XS650.com Supporter

    Just as an update... I removed the “Y” fitting from the base. Went and bought a 3/8” npt tap and 90 degree fitting. Turns out the hole is much larger than the tap. I believe it’s 1/2” npt. Will report more later. Thx
     
    grizld1, MaxPete and OHRider like this.
  5. Machine

    Machine Race the wind Top Contributor

    You can't beat the looks of the shorter single outlet breather of the 80's
    20200821_183034.jpg
     
  6. bosco659

    bosco659 XS650 Addict XS650.com Supporter

    That does look better. Maybe I’ll keep looking for one but will mod mine in the meantime. Is it baffled as well?
     
  7. Machine

    Machine Race the wind Top Contributor

    I actually carefully trimmed the "baffle" of the 79 so that it would fit into the 80's low cast item. It fits well. And I think it is a good idea
    :umm:
     
    Mailman likes this.
  8. bosco659

    bosco659 XS650 Addict XS650.com Supporter

    Did you attach a filter to the outlet?
     
  9. Machine

    Machine Race the wind Top Contributor

    Not a filter. I just ran a hose out to an automotive brake booster check valve and then down.
     

    Attached Files:

    YamadudeXS650C and Mailman like this.
  10. Mailman

    Mailman Hardly a Guru Top Contributor

    That’s a nice clean method! :thumbsup:
     
    Machine likes this.
  11. Machine

    Machine Race the wind Top Contributor

    If I find another 80's single outlet breather locally, its mine too lol
    :lmao:
     
    Mailman likes this.
  12. OHRider

    OHRider XS650 Addict XS650.com Supporter

    Sorry about the tap size. My old brain forgets sometimes.
     
    grizld1 and gggGary like this.
  13. bosco659

    bosco659 XS650 Addict XS650.com Supporter

    Not a problem, gave me an excuse to buy more tools and I also wouldn’t have known how to remove the fitting. Thanks for your help, much appreciated.
     
    grizld1, gggGary and OHRider like this.
  14. Norton7d

    Norton7d XS650 Junkie

    So Randy, how does your pipe end once it gooes down, open or somethimg to capture fumes / drips?
     
  15. bosco659

    bosco659 XS650 Addict XS650.com Supporter

    Single breather mod completed. A6F6BF23-8879-4ED4-8679-E5E6A7E4362E.jpeg
     
    Boog, gggGary and Machine like this.
  16. Machine

    Machine Race the wind Top Contributor

    So far on this 79 engine I've just drive way test ran and only up to 3rd gear a couple days. I see no dripping yet. I do not suggest allowing the potential drip to make it in front of the rear tire!
    In the past I ran the dual outlet breather pipes to the UNI Pod filters as 5twins pics show. Did not notice any venting on that 78 either.
    It is still a question as to how necessary it is to catch the potential drip to me. :umm:
     
    gggGary likes this.
  17. Norton7d

    Norton7d XS650 Junkie

    If a Yamaha drips in a spot nobody sees, does it leave an oil spot?
     
    timbeck, GLJ, Machine and 1 other person like this.
  18. Machine

    Machine Race the wind Top Contributor

    20200821_183034.jpg
    I am looking for another single out breather like this one for the 78E now. Thank You
    -R , Vancouver WA
     

    Attached Files:

  19. Machine

    Machine Race the wind Top Contributor

    Billy Icon.. You have one? -R
     

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