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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Engine » Big Mechanicals: Head, Cyl, Piston, Rod, Crank, Flywheel, Cases, Bearings » Archive through July 16, 2008 » Crank and cam « Previous Next »

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Johnny8462
Posted on Saturday, February 24, 2007 - 01:00 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

i heard of people putting the 900 crank and cam into the 1200 to make more power what do you think?
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Blake
Posted on Saturday, February 24, 2007 - 04:59 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I think you heard wrong.
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Blake
Posted on Saturday, February 24, 2007 - 05:01 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Specifically, the cams are identical and the crank reduces stroke and thus displacement and thus HP.
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Wile_ecoyote
Posted on Sunday, February 25, 2007 - 03:52 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Maybe he's got it backerd.....
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Qoatis
Posted on Tuesday, November 13, 2007 - 01:56 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

will an 08 XB-12 crank fit into an 03 XB-9?
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Hobanbrothers
Posted on Tuesday, November 13, 2007 - 09:19 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Yes it will, but you will need an 08' Rotor and mount bolt. We ran a few different versions of this at Daytona this fall. It is an excellent piece and in earlier models can be lightened to spin up very fast!
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Panic
Posted on Thursday, November 22, 2007 - 10:44 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I first heard this from Corvette owners discussing "de-stroking it with a 283 crank - for more power".

That was in 1964, I see it's still around.
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Bombardier
Posted on Friday, November 23, 2007 - 05:28 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Hoban,

Does the different journal size cause any problems with regards room in the old cases?
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Bluzm2
Posted on Friday, November 23, 2007 - 05:52 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Hoban,
I've got a crank question, are the press together tuber cranks worth having rebuilt?
I've got a 2K Cyclone down due to a bad crank. It's hard to justify a new crank since they almost doubled the price a while back.
The rod bearings are shot due to an oil starvation problem (my oil filter backed off, didn't catch it in time.)

Thanks much!

Brad
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Hobanbrothers
Posted on Saturday, November 24, 2007 - 10:52 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Bombardier, To define older cases I will go pre and post INA sprocket side bearing years. If you have a Timken bearing style motor, the new style sprocket shaft will not work, if you have INA bearing model you should be fine.

Brad, Unfortunately it is not a cheap date any way you go, we do have all the neccessary pieces for rebuilding, but each case is different as to the cost effectivness to rebuilding vs. purchasing new. Most all of the ones we rebuild in 1 piece XL/X1/XB based flywheels are for racers with higher output.
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Thunderheart69
Posted on Sunday, March 23, 2008 - 03:35 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I would like to ask Mr. anonymous if he could tell me some data on my engine rebuild. This job is being done at Arrowhead harley in Glendale, Arizona. I was interested in the parts being used and possible benefits of the outcome.My service rep could not tell me much about the data until job completed. This is a warranty job.if you need a vin # email me @ chalupa_n_u@yahoo.com and I can provide data. I understand that new avenues had to be explored in this case.possible custom machining and one-off parts used?
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Rick_a
Posted on Saturday, March 29, 2008 - 02:25 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The only way to really benefit from a de-stroked motor is to combine the higher rev limit with a bigger bore like an 1170cc screamer.

Maybe you're thinking of the popular XB9 pistons with xb12 heads?
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