Hot or cold?

Discussion in 'Motorized Bicycle General Discussion' started by Cylon, Sep 29, 2015.

  1. Cylon

    Cylon Member

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    Should I run a b6hs or a b8hs with my high comp head I tried them both and there's really no difference in how it runs I'm just curious to know what's best for the motor.
     
  2. Agreen

    Agreen Member

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    Look at the electrode for whether it's too hot or too cold. You should see a definite line on the electrode from flame travel. Mid way is where it should be. Take a look at this page:

    http://www.braigasen.com/howtoread.htm
     
  3. Cylon

    Cylon Member

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  4. Cylon

    Cylon Member

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    That's the b6hs I won't be able to check the other till tomorrow
     
  5. Agreen

    Agreen Member

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    Great detail of your fingerprint lol. Hard to tell, but it looks kind of sooty and that may be showing signs of detonation if those are aluminium specks on the outer ring.

    Which is contradictory!

    By just looking at it from that picture it looks right. That's about the right color for a 2 stroke. The only way you'll really know is to put a fresh plug in it and ride it hard at wide open for a bit, then shut it off and cool the engine. Pull the plug, cut the threads off with a saw, and read the ceramic base. Also you'll be able to note the ground strap burn mark better (shows the heat range)
     
    #5 Agreen, Sep 29, 2015
    Last edited: Sep 29, 2015
  6. Cylon

    Cylon Member

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    Yep those are aluminum specks the ring scratched the cylinder wall so I rebuilt the motor I think I'm going to keep the 8 in there for now I looked at it quickly before I came into work and it looks perfect. The wonders of a 4k camera :)
     

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