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  #1  
Old 13th October 2016
Randy_rots Randy_rots is offline
Chief Harley Engineer
 
Join Date: Mar 2007
Location: Derby
Posts: 532
Sportster/Buell Model: XL 1200 softail frame&NOS
Sportster/Buell Year: 2000
Sportster/Buell Model #2: Buell XB1250 Uly XT
Sportster/Buell Year #2: 2009
Reputation: 186700
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Default XB12XT converted to 1250 with XR1200 heads

Here's some photos and specs of my Buell XB12XT engine with XR1200 heads.

- XR 1200 heads with Hammer Performance CRUSH head porting and hardware
- Throttle body ported by Hammer Performance + MAP sensor added
- Baro sensor added
- 1250 big fin cylinder kit and 30 degrees CP reverse dome pistons
- S&S roller rockers
- -.050 Sledge Hammer pushrods
- Jims Power Glide II lifters
- Red Shift 605/591 cams on original cores
- Front and read Innovate wide band o2 sensors and gauge
- Baro and MAP sensors from Buell 1125R
- Micron Serpent exhaust with front o2 sensor bung welded on
- K&N air filter and rerouted breathers
- Cometic XR1200 head gaskets .030" and .020" base gaskets, James one piece metal rockerbox gaskets
- Cylinder heads oil gallery connected to return line via custom made oil cooler
- Xopti fuel map

And some links to other threads about this bike:

http://xlforum.net/forums/showthread.php?t=1994265
http://xlforum.net/forums/showthread.php?t=1994805


















Last edited by Randy_rots; 17th March 2020 at 16:11.. Reason: Fuxx you photobucket!!!
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  #2  
Old 17th March 2020
Randy_rots Randy_rots is offline
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Join Date: Mar 2007
Location: Derby
Posts: 532
Sportster/Buell Model: XL 1200 softail frame&NOS
Sportster/Buell Year: 2000
Sportster/Buell Model #2: Buell XB1250 Uly XT
Sportster/Buell Year #2: 2009
Reputation: 186700
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Default

I refreshed the thread with photos from other website.
Fuxxck you Photobucket!!
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  #3  
Old 17th March 2020
seajay's Avatar
seajay seajay is offline
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Sportster/Buell Model: 1200C
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Default

Nice.
__________________
04/07 1275 BFH heads Darkhorse XB crank .600 cams S&S 1.725 rockers S&S precision lifters BDL+15% clutch TC88A HSR-45 S&S 3" ac LSR 2-1
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  #4  
Old 19th March 2020
Highly-Dangerous's Avatar
Highly-Dangerous Highly-Dangerous is offline
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Default

Maybe just my f up eyes but... I don't like that bent I see in the exhaust headers?
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  #5  
Old 19th March 2020
Randy_rots Randy_rots is offline
Chief Harley Engineer
 
Join Date: Mar 2007
Location: Derby
Posts: 532
Sportster/Buell Model: XL 1200 softail frame&NOS
Sportster/Buell Year: 2000
Sportster/Buell Model #2: Buell XB1250 Uly XT
Sportster/Buell Year #2: 2009
Reputation: 186700
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Default

Quote:
Originally Posted by Highly-Dangerous View Post
Maybe just my f up eyes but... I don't like that bent I see in the exhaust headers?
It's called "Serpent" headpipe shape that reduce the energy losses and improve scavenge wave action.
Go to Micron web for more info
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