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Thread: 912 Big Bore

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  1. 02-03-2014, 04:25 PM #1
    Av8r3400
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    Default Re: 912 Big Bore

    You said the motor is a 912 UL S ? The 100 or 80 hp variant?

    If you are starting with the 100 hp motor, that seems like a lot of work for an additional 4 hp...
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  2. 02-03-2014, 05:49 PM #2
    mr bill
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    Default Re: 912 Big Bore

    Yup, but I will be able to burn auto regular. They added 132CC to the engine, so I think the dyno testing will show more power than they are claiming.
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  3. 02-03-2014, 06:47 PM #3
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    Default Re: 912 Big Bore

    Bill - do they have a website somewhere showing details? Are these kits available for the 80 hp motors?
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  4. 02-03-2014, 07:51 PM #4
    mr bill
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    Default Re: 912 Big Bore

    I am not sure. You may have to open the bore in the cylinder heads of a 912UL. No mods for the crankcase though. It would be best to call Hal Stockman at 775-934-5714. He uses well known vendors to fabricate the parts, but he does not have a website.
    Last edited by mr bill; 02-03-2014 at 07:53 PM. Reason: add web
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