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Author Message   Buellinachinashop Posted on Wednesday, September 17, 2008 - 12:27 am:        I have a buddy who says his motor is the same as mine..I've argued that the Thunderstorm of the XB is not the same Sporty motor he has, but to no avail...I need concrete proof.   Firebolt020283 Posted on Wednesday, September 17, 2008 - 12:44 am:        well for starters the cases are different, the heads are different, the breather holes are on the top of the engine not the side the intake is different, im pretty sure the cams are different(not sure on that one) the ignition system is different, and im sure there is more but thats what i know for sure is different.   Firebolt020283 Posted on Wednesday, September 17, 2008 - 12:46 am:        and since you have a 9 the stroke is different.   Ducxl Posted on Wednesday, September 17, 2008 - 06:32 am:        Trapdoor...and...NO trapdoor OOpps....i mean.. NO trapdoor....trapdoor (Message edited by Ducxl on September 17, 2008)   Spiderman Posted on Wednesday, September 17, 2008 - 06:50 am:        "Never argue with a fool, onlookers may not be able to tell the difference."   Ratbuell Posted on Wednesday, September 17, 2008 - 08:58 am:        Different cases (tubers used HD cases, Buell makes cases for XBs) Different heads Different cams Different sensors for EFI 08-up use different oil pump (XBRR style) Different mounting systems Different intakes (side draft, tuber; downdraft XB) Different transmissions (trapdoor versus non-trapdoor - XB, you have to split the case to get the gearset out) Different flywheels The engines are the same *architecture*, but most all of the parts are redesigned on the XBs. And technically, the only tuber that *actually* had a Sporty motor was the S2 (and the RS/RSS bikes). Later tubers used HD cases, but with revamped internals - lighter flywheels, different pistons/heads/cams, etc.   Gjwinaus Posted on Wednesday, September 17, 2008 - 09:06 am:        Are the gearbox components the same in the sportster and XB.   86129squids Posted on Wednesday, September 17, 2008 - 09:18 am:        Interesting topic- what I've been wondering is how similar are the motors between the XB12's and the new Euro- only XR1200? Sure would like to see a CVO Sportster with various Buell performance logos throughout. I know, I'm dreaming- Flickinger himself said last March that the brands will always be separate. I think that's missing an opportunity... but then I guess it's back to-

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