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Posted:  06 Feb 2009 07:54 [?]  
Ok , this may be a silly question , but I have to know .Is it possible , or should I say is it applicable to put a 12 motor in a 9 frame (same year)?
Posted:  06 Feb 2009 12:13 [?]  
why not...it's the same frame
Posted:  06 Feb 2009 18:45 [?]  
Cool , I thought so ....thanks LeFox.
Posted:  06 Feb 2009 22:58 [?]  
no prob
Posted:  21 May 2009 19:52 [?]  
I am a noob, but I am under the impression that they are basically the same block with just different bores... Is that true?
Posted:  21 May 2009 20:33 [?]  
A friend of mine has done this...  with a 2004 xb9 bike...using a 2006 Xb12 race prepped motor from a somewhat local race team. No problems.
Posted:  22 May 2009 01:48 [?]  
Quote:
I am a noob, but I am under the impression that they are basically the same block with just different bores... Is that true?


Bores are the same, stroke is longer on the 12.
Posted:  22 May 2009 02:28 [?]  
Quote:
Bores are the same, stroke is longer on the 12.


So by that I would assume then the "block" varies slightly in overall dimension (Mostly Height).  Thanks for the corrected Info!
Posted:  22 May 2009 02:57 [?]  
The difference in stroke between the 9 and 12 is .687" (3.125 for the 9, and 3.812 for the 12).  What this means is the crank pin is .3435" further from the centerline of the fly wheel.  I have not measured, but do not believe the engine cases (block)to be any different in height.

Anybody is free to correct me if I am wrong!!
Posted:  21 Jan 2010 23:09 [?]  
Here's to digging up an OLD thread but... Has anyone stuffed a S&S into a Buell?
Posted:  22 Jan 2010 14:22 [?]  
Same block

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