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Honda CB250 K4 -72 racer mods

This is a discussion on Honda CB250 K4 -72 racer mods within the Vintage Motorcycle Racing forums, part of the Caferacer.net Forums category; Back from race. The Honda as usual reliable. Minor problem was that a piece of steel holding left silencer broke and had to be welded. ...

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Thread: Honda CB250 K4 -72 racer mods

  1. #71
    Senior Member Mike 40M's Avatar
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    Back from race. The Honda as usual reliable. Minor problem was that a piece of steel holding left silencer broke and had to be welded. First race 2nd place as one usually faster 2-stroke broke down. Second race, another 2-stroke seized so it was my son's first victory. As one wise old racer said: "To win you have to finish"
    TrialsRider likes this.

  2. #72
    Senior Member crazypj's Avatar
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    Cool stuff, glad he got a good weekend
    I dabble in rocket science, when I\'m not picking my nose
    The other night I gave my girlfriend an orgasm, but, she spat it back at me

    'you can take my word for it or argue until you find out I'm right'

  3. #73
    Senior Member Mike 40M's Avatar
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    My son didn't have to push hard, just enough to keep the next rider 1/8 mile behind.
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  5. #74
    Senior Member Mike 40M's Avatar
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    Next meeting done. My son got a flu and could not ride. So was alone there with both the CB, the RG (fixed after last race crash) and the Manx. After that the Norton tank had started to leak, I switched bike and rode the Honda. As I haven't ridden it for more than a year (son raced it), it was a pleasant surprise how nice and easy it is to ride. Handles well and brakes good. The modified steering head, reinforced swing arm mount and the lengthened swing arm makes it handle really well. Both the Norton and the Honda is completely useless under 5000 rpm, but as the Manx stops at 7800 and the CB at 11500, it is much easier to ride the Honda. Though it should go at least over 8500 rpm. But on the sunday warm up it started badly, powerless and misfiring. Time to replace the electronic ignition system. As a thunderstorm with heavy rain came in, I didn't took out the RG as it have slicks. Not enough time to replace with rain tyres. Called it a day. Anyhow had a lot of fun.

  6. #75
    Senior Member crazypj's Avatar
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    Cool, nice to have an update now and again
    I dabble in rocket science, when I\'m not picking my nose
    The other night I gave my girlfriend an orgasm, but, she spat it back at me

    'you can take my word for it or argue until you find out I'm right'

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