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  1. #1
    Canadian POWERHOUSE CanadianGPR's Avatar
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    Big Bore Vs 1300

    I am considering going Big Bore, I was just wondering how ridable a carburated Big Bore is? I have read that they like to surge. I do a lot of cruising around 50-55 mph and would this be a problem. Or my other option is to go with 1300 cylinders. Any input is appreciated.

    Rich.


  2. #2
    Crash Test Dummy Smitty's Avatar
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    The Crayola is a 1500, with 89mm pistons, and it's got great midrange. Can't speak for all other setups, but it's perfectly rideable at that speed. The aftermarket throttle feels like it helps, compared to the stock one.

  3. #3
    Canadian POWERHOUSE CanadianGPR's Avatar
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    Thanks smitty, I leaning towards going for the Big Bore kit. It seems to be the best bang for the buck. I just emailed Group K with a bunch of questions.

  4. #4
    Dave Sharp dav_dman's Avatar
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    i've read using an advent cdi with stinger curve or something helps smooth things out.. not able to back that up.

  5. #5
    just GOT TO DO IT! great lakes gpr 1200's Avatar
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    JMO

    For what it is worth.. I have a group K BB and love It.. In it's stock form it is a great ski with super power band. I have done some stuff to mine and it just keeps impressing me.

  6. #6

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    My 1390 carbed 01 does not surge, it does accelerate very quick thru the 5000-6500 range, but it doesn't surge at all. It holds 50 mph very steady. I think that there is a speed around 35 or so that it will accelerate thru, but its a very easy speed to avoid, cause you will pass it to quick to notice.
    It as so is perfectly rideable, I wouldn't have it any other way. Thats what I've always enjoyed about Group K setups, they look stock, don't require alot of aftermarket parts, start and drive like stock, and GO LIKE STINK!

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