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Thread: Fuel Injected CBR250RR?

  1. #16
    Join Date
    7th November 2004 - 11:00
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    Aquired by locals
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    Groote Eylandt
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    6,606
    I added my veiwpoint.
    To every man upon this earth
    Death cometh sooner or late
    And how can a man die better
    Than facing fearful odds
    For the ashes of his fathers
    And the temples of his Gods

  2. #17
    Join Date
    25th October 2002 - 17:30
    Bike
    GSXR1000
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    Christchurch
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    9,291
    To which he has replied.... Poor guy.

  3. #18
    Join Date
    7th November 2004 - 11:00
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    Aquired by locals
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    Groote Eylandt
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    6,606
    I feel sorry for him if he was mislead but Im not so sure........
    To every man upon this earth
    Death cometh sooner or late
    And how can a man die better
    Than facing fearful odds
    For the ashes of his fathers
    And the temples of his Gods

  4. #19
    Join Date
    29th September 2003 - 20:48
    Bike
    2008 DRZ400E & 1983 CB152T
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    Alexandra
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    4,158
    Quote Originally Posted by SimJen
    Not much use on a two stroke, HRC tried it with the NSR500 and ditched it as it was a pain in the ass to setup. Injectors would also have to squirt the oil into the cylinder too, im not sure they'd be up to it.
    Some new 2 stroke scooters use direct injection (straight into the cylinders) but they've got lots of R&D behind them.
    It'd add too much weight and complexity to such a simple bike, you'd probably also seize it about 20 times while you set it up.
    They used it for a race or 2 (hockenheim iirc) and then went back to teh carbs.

    I've heard that the ktm125 uses FI and that seems to be pretty quick, although it doesn't have a noticeable advantage, it has in 3 or 4 seasons gone from nothing to top bike in the class, or everything but.

  5. #20
    Join Date
    8th August 2004 - 17:16
    Bike
    1999 GSXR1100W, 1975 CT90
    Location
    Upper Hutt
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    5,551
    Quote Originally Posted by Sniper
    I feel sorry for him if he was mislead but Im not so sure........
    Yeah, the bikes stores that told him should know better. It was only in around the year 2000 that the litre supersport bikes came out with EFI (correct me if I'm wrong). Why would a 250 have a fuel injection system a decade earlier than its bigger CC counterparts?

  6. #21
    Join Date
    6th July 2005 - 17:55
    Bike
    RGV250 VJ21, VFR400R NC30
    Location
    North Shore
    Posts
    301
    Quote Originally Posted by k14
    I know that there are some guys in auzzie that designed and fitted a fuel injected system for their MC22 cbr250. Not sure how they got on though, last I saw about it was on the cbr250 forums a year or so ago.
    they got it working but had heaps of problems with flat spots and starting the thing, great idea though if you have the know how, id think it would be pretty fun... but obviosly that dudes right on trademe, so whats the point of doing it yourself cause they all come fuel injected .. pfft

  7. #22
    Join Date
    9th June 2005 - 21:19
    Bike
    Daytona 675
    Location
    Auckland
    Posts
    710
    What advantages would you get? Another 10% h.p? Might give you 36-37 h.p. to play with! It’s a 250! If you want to go faster then get a bigger bike...
    If you want to go faster on your 250 then spend the money on making them handle, e.g., upgrade the shocks, better tyres and brakes...
    I'd prefer to play with a carbed bike where you can mess about with jets than have to deal with the expense of bigger injectors, bigger fuel pump and re-programming the computer to get it right.
    And I have never had a throttle position sensor, air flow meter, coolant temp sender, cam and/or crank angle sensor or an oxygen sensor crap out on my bike.
    All (99%) of new bikes will be F.I. witch is fine but the expense of an after market kit or the headache of trial and error would leave me cold.
    If any one is serious about putting fuel injection on there bike, car, lawnmower there are some very good books at Tech Books, if you have gone past that stage and are looking for a computer to run it then send me a P.M.
    We all have our little obsessions...

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