Sportster Models 883, 883 Custom, 1200 Custom, 883L, 1200L, 1200S, 1200 Roadster, XR1200, and the Nightster.
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883-1200 conversion

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  #11  
Old 07-11-2011 | 08:44 AM
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xcore
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From: Sin City
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With the 1200 cylinder kit, will everything be similar to the original sportster 1200? Or is there still a slight difference in gear ratios and all.
 
  #12  
Old 07-11-2011 | 08:48 AM
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xFreebirdx
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From: Landrum, SC , elevation 986'
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Originally Posted by xcore
With the 1200 cylinder kit, will everything be similar to the original sportster 1200? Or is there still a slight difference in gear ratios and all.
Not sure what Cylinder kit your talking about, but no matter which one. The only way to change the transmission gear ratio is to physically remove the tranny and replace it with one with a different gear ratio.....
 
  #13  
Old 07-11-2011 | 10:04 AM
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Originally Posted by xcore
With the 1200 cylinder kit, will everything be similar to the original sportster 1200? Or is there still a slight difference in gear ratios and all.
Stock 1200 Sportsters have different overall gearing to 883s, but if you convert an 883 to a 1200 it is not necessary to change the gearing as well. Certainly if and when I do it to my bike I will try it with the engine mods before making any other changes. The increased engine performance will give better results compared with 1200 gearing.
 
  #14  
Old 07-11-2011 | 10:14 AM
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Since the 883s have a different bottom end as the 1200s, and I'm quite sure, that they are made that way to fit the capacity of the 883 and not a 1200. Wouldn't the 1200 kit cause intense wearing and tearing? Anyone who changed the kit has any feedback about the wear and tear?
 
  #15  
Old 07-11-2011 | 10:38 AM
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xFreebirdx
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From: Landrum, SC , elevation 986'
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Originally Posted by xcore
Since the 883s have a different bottom end as the 1200s, and I'm quite sure, that they are made that way to fit the capacity of the 883 and not a 1200. Wouldn't the 1200 kit cause intense wearing and tearing? Anyone who changed the kit has any feedback about the wear and tear?
No everything in the bottom end is identical except for the tranny gear ratio.

Some guys go up in the amount of teeth on the front sprocket to offset the ratio.

Some guys go down in teeth on the front to make it accelerate even harder.

Some guys like me leave things as is and have a monster hole shot bike that accelerates like mad.

Neither will add to the wear and tear cause mainly your limited to your rev limiter anyways and you can build modified 883's to have as much power as the modified 1200s The bottom end of Sportster motors are predominately bullet proof, tested again and again.

There are also some guys that modify the hell out of their 883's.
 
  #16  
Old 07-11-2011 | 12:18 PM
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Would going to this kit make it any louder?
 
  #17  
Old 07-11-2011 | 12:35 PM
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Originally Posted by XTsHOG
Would going to this kit make it any louder?
Hard to say cause of the influence of pipes available today. But I know with 10.5.1 compression, head work and cams on mine it did.

Just putting 1250 juggs on it probably wouldn't change it too much. But 1200's are inherently louder than 883's anyways.
 
  #18  
Old 07-11-2011 | 12:53 PM
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Well, just for the sake for asking, cause I wouldnt know what I'll do to mine. What do you guys do to the original block and all? Keep it? Sell it?
 
  #19  
Old 07-11-2011 | 01:14 PM
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Originally Posted by xcore
Well, just for the sake for asking, cause I wouldnt know what I'll do to mine. What do you guys do to the original block and all? Keep it? Sell it?
Whats the original block?
 
  #20  
Old 07-11-2011 | 04:24 PM
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Originally Posted by xFreebirdx
Whats the original block?
Original Jugs, I think he means.

I've kept mine as spare parts, never know when you might need something!
Plus, other than the heads, you won't get much money for stock 883 cylinders and jugs.
 



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