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Thread: bmw f650 need more hp eney tip?

  1. #1

    bmw f650 need more hp eney tip?

    hi everyone im a young New zealandr an have bilt a supermono racer, It's a f650 bmw fuel injected 2004 engine iv done cams,big bore kit 700cc,shim under buket,over sized valves,up comprshion,46mm throttle body, bigger injector,ported head,removed charging systm, lightn flywheel, ect.
    an is puting out 65hp on a dynojet dyno not bad but im racing it up agenst suzki sv650 with 75-80hp an sxv 550 aprilia tigcraft wepons an my little thumper an i are just staring to keep up with the top guys.
    im the only f650 out ther atm but if eneyone nose how to get more hp out of the injected bmw or is eneyone racing with a injected bmw engine it would be good to no if ther is eney way to squez a few more hp out of this motor
    cheers.

  2. #2
    I was thinking what about going to twin 37mm trottle bodys as apose to team pami's bikes having twin 38mm carbs, my mono atm has a single 46mm trottle body, I think the twin system must increase flow comperd to having a big single carb or throttle body.
    eney other thoghts on that?

  3. #3
    use water injection

  4. #4
    i was thinking more along the lines of runing it on methanole but the water injection ill have a good look in to it. Iv just taken the flywheel off an an lighting even more an have taken the charging system off to make it a bit more revy.

  5. #5
    Quote Originally Posted by Dillon View Post
    i was thinking more along the lines of runing it on methanole but the water injection ill have a good look in to it. Iv just taken the flywheel off an an lighting even more an have taken the charging system off to make it a bit more revy.
    Methanol would get more hp if you run higher comp, but are you allowed to run on that? Theres no flame when it burns if you fall off, so the marshalls maybe think youre just swatting flies when youre burning to death.! Ensure their fire extinguishers are adequate to cope with Methanol at the track too.
    In Europe we can only run pump fuel- although Ethanol is sold at the stations in Sweden so it qualifies.

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