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Stuffed CBF250 Big End Bearing. How long will it last?

Discussion in 'Technical and Troubleshooting Torque' started by guska, Sep 14, 2015.

  1. So a week or so ago, I got cocky when servicing my CBF250. I managed to install the oil filter backwards, of course blocking the oil flow.

    Long story short(ish), I rode 36km like that, then diagnosed the problem and flipped the filter around, but the damage had been done.

    Took it to a bloke suggested by a mate, who diagnosed a stuffed big end bearing. Due to it being 60,000km in, I'm told by multiple sources that it will need a full rebuild, quoted around the $1800 mark. The bike's worth MAYBE $1500 running right.

    I've bought a new bike, but I'd like to figure out what sort of lifespan this one will have. I no longer care if I bin it, so my thoughts are to ride the arse off it on the 1000km old Pirelli Sport Demons that are on it, until it explodes.

    How much fun am I likely to get out of it, considering that it sounds like a tractor after about 200km as is?
  2. Sounds good in theory but have you thought through the implications of screaming down the highway on a bike that has just had a big end seize?

    I Can think of better ways to get excitement.
    • Agree Agree x 1
  3. Keep your left hand on that clutch lever in anticipation....

    If you've already bought another bike, why not have a crack at doing it yourself? You could probably find a manual online or buy one.
  4. If you fancy a split crankcase spewing oil all over your rear tyre, whilst riding at 100kph, feel free.

    Have you priced a complete bottom end from the wreckers?
  5. All good points. I had not actually considered the end result. Thanks.

    Complete engines go for $400-800 depending on condition and mileage.

    You've convinced me to at least tear this one down and learn how it works.
    • Like Like x 2