2004 800cc Bonnie

Discussion in 'Technical Help' started by Ariel Badger, Apr 22, 2013.

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  1. Ariel Badger

    Ariel Badger New Member

    Apr 22, 2013
    1
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    Hi this is my first post on here so a quick introduction is in order. I am 56 and been around bikes all my life, five years ago after getting mashed in a couple of big offs I decided that I was bored with riding on the road so I moved from the street to the track. I now sprint and hillclimb an old Ariel.
    I am thinking of buying a 2004 Bonnie to build a straightliner, what power can I expect to get out of this motor and what is available off the shelf in the way of cams and high comp pistons? I would like to run at about 12;1 CR on Methanol initially with the engine normally aspirated but am toying with the idea of supercharging, whould the crank take this? Your input much apreciated.
    The Badger
     
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  2. workshyfop

    workshyfop Member

    Feb 26, 2013
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    16
    I've no idea, but it sounds great & I'd love to see (& hear) it when it's finished.
     
  3. Screwball

    Screwball Active Member

    Mar 21, 2013
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    Kent
    PERFORMANCE:
    • Maximum Power 62PS (61bhp) at 7,400rpm
    • Maximum Torque 60Nm (44.3ft-lbf) at 3,500rpm

    It's not been built as a racing bike but it will be fun trying to squeeze some more power out...
    What sort of power you trying to achieve? NOS Would be easiest....
     
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  4. Ariel Badger

    Ariel Badger New Member

    Apr 22, 2013
    1
    1
    Where would I go to get a full spec for this engine from please? I would like to know as much as possible about the engine as possible before even thinking about doing any work. the minimum data I would like is compression ratio, how much the valves clear the pistons by, cam profiles and valve timings.
    Given a standard engine developing 61 BHP, I should think that at least 90 would be possible before thinking of NOS and forced induction, Of course this will affect engine life quite considerably!
    I now need to persuade my mate to let me have his bike for a lot less than he wants for it!
     
  5. Screwball

    Screwball Active Member

    Mar 21, 2013
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    Kent
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  6. Screwball

    Screwball Active Member

    Mar 21, 2013
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    Kent
    #6 Screwball, Apr 23, 2013
    Last edited: Apr 23, 2013
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  7. Screwball

    Screwball Active Member

    Mar 21, 2013
    1,016
    36
    Kent
    Ariel do keep us informed on your progress.. It sounds like an interesting project and I'm sure there are a few of us that will learn a lot from your experiences.
     
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