View Full Version : Sportster Motorcycle Engine Conversions


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  1. question about sprocket / gearing
  2. I have a sinking feeling
  3. What heads will fit an 04'?
  4. Has anyone done just the 883 to 1212 conversion on an 07?
  5. Bolt On '04 1200R heads from NRHS, job for the novice wrench?
  6. Give me advice, here is my situation
  7. se icm question
  8. Converting FI Buell to carb
  9. 1200 Conversion - SE Kit - Overheating?
  10. How big can I go?
  11. Head and Piston advice.
  12. BIKE IS 2003 WILL '05 and up cams WORK?
  13. 883-1250 conversion exhaust reversion problem... Help!
  14. Just pulled the trigger
  15. Crank wobble?
  16. How many miles on your conversion?
  17. Pinging
  18. Parts almost amassed, couple questions
  19. help needed
  20. Bought Bike, Have Questions
  21. 883-1250 why change ignition?
  22. changing the front belt sporcket
  23. quick question about NRHS
  24. stock carb jet
  25. definitions
  26. 883 to 1200 questions
  27. I need help
  28. making plans
  29. 1250 or larger on an EFI bike???-->
  30. knocking noise from conversion
  31. NRHS input on 90" break-in?
  32. aahhhhh broke more stuff.
  33. Got 'er done
  34. Timeslips????
  35. but what about us?
  36. Woudl the change from 1200 to 1250 be worth it?
  37. Could a newbie do it?
  38. silly question?
  39. Why does my XL perform so poorly?
  40. what is the differance in years ?
  41. conversion break in questions about oil
  42. It's Alive!
  43. correct gap?
  44. 04+ conversion problems question.
  45. "Carb" or "Reversion Problem From Exhaust" Knoweldge. Sticky?
  46. What to do with $800
  47. Why hasn't my converted solid-mount shown a need for a new ignition?
  48. XR750/883 Series Race Engine Venting Etc...
  49. 90" RevPerf build
  50. Conversion on a Rubbermount
  51. 2 Things wrong with my conversion
  52. looking for info here
  53. 88" or 90" conversion, who's done one?
  54. Buell 1200 need way more power!
  55. Turbo Harley Buell
  56. Warranty Issues
  57. Do I need a full top end gasket set?
  58. NRHS and Nallin
  59. 2 week 1250 review
  60. Conversion or no conversion?
  61. Cylinders AKA Jugs
  62. 883 Cylinders
  63. 883 cylinders
  64. Rubbermount Conversions - using stock 883 Ignition?
  65. Change sprockets?
  66. Which pistons are these?
  67. Video of my 90" running.
  68. Flat... Dished... or Domed Pistons for low RPM TQ?
  69. Over 100 Horsepower
  70. Thinking about converting the 883 to a 1200
  71. Stock 1200 Smoking At High Rpm???
  72. Please tell me what you think of this Dyno
  73. Oil Change for conversion
  74. Ideas needed for conversion of 883 to ?
  75. Is this a Problem?? See Pics
  76. 88" questions
  77. 90" NRHS has begun...
  78. 100 hp is easy, I want 100 ft-lbs
  79. SE 1200 conversion issue
  80. YAMABOND...any tips?
  81. Who Wants my project??? More 1250 Problems
  82. Much thanks to the boys at NRHS
  83. Anyone had a cam bushing failure.
  84. Old pistons in a new bore
  85. CR Confusion
  86. Piston fit-2001 M2
  87. slight pinging
  88. Engine Peeling?
  89. Help with temp problems
  90. 1212 or 1250?
  91. 4 speed tranny
  92. Jims cycle shop $150 883 to 1200 boring
  93. Which heads??
  94. anyone running a 99"?
  95. Seven Or Eight Pins?
  96. SE 1200 piston kit
  97. Who wants my project??? PART II
  98. 88" sportster compared to? faster than?
  99. I guess she's broke In.
  100. 2006 vs 2007 in catalog
  101. 2002 heads on a 2006?
  102. winter project ? for NRHS
  103. Winter project 883 to 1200 and or 1250
  104. It's Alive (for The Third Friggin' Time)
  105. Screamin Eagle High Comp Pistons w/XB heads?
  106. 12.9@99mph
  107. Need Help, Dan or Anyone
  108. what to do with $2500?
  109. 883 to 1200 conversion with 1200miles on it
  110. What cams to run?
  111. Can stock cast silver heads be polished to shine?
  112. buell tstorm head
  113. SE 1200 Conversion or NRHS
  114. power difference???
  115. How large can I go with 1200 pistons
  116. 90-100 Hp
  117. How to make it a 2-day project?
  118. Pistons???????
  119. upgrading the 1200 vis the 883??
  120. Help!!! Need new cams!
  121. 2007 883 to 1200
  122. 2007 883 to 1212 - simple extra questions
  123. what setup for TORQUE more than HP ???
  124. This is annoying, KB's are knocking again
  125. 1200- mild upgrades.
  126. 88" cylinders and pistons.What else I need?
  127. Questions on Screamin Eagle Conversion kit
  128. S&S hot set up kit
  129. Another reason to NOT use KB pistons
  130. Would these heads work
  131. 2nd conversion
  132. Still lovin' it!
  133. Max Hp out of a 1250:
  134. All I want is 2 hours of Dyno time!!!!
  135. Question about 1200 conversion...
  136. will these heads fit my 95 883?
  137. engine building
  138. 1992 1200. Loss of Power
  139. Show it off. 88/90 pics.
  140. How much juice from just pistons and jugs
  141. Specs ?
  142. Anybody used these kits?
  143. one silly question about gaskets
  144. bugs worked out of 883/1250 convert kit?
  145. Where to start troubleshooting?
  146. Rocker bolts
  147. S$S 600's?
  148. Help on 07 Heads part #'s
  149. used module for conversion
  150. Does my 1250 kit "really" have special cylinders?
  151. almost done...and.....
  152. dished piston conversion
  153. Magazine question
  154. 90" project for efi Sporty
  155. first start after 1200 conver....
  156. Normal oper temps?
  157. compression help
  158. extreemly low oil temps after conver
  159. none
  160. mph on 88"
  161. Mikuni HSR 42 VS 45?
  162. buell to rubbermount
  163. sizes available for Hurricane pistons.
  164. NRHS Stage II with SE bolt in or SE .536
  165. Ignition modules
  166. Assembly lube
  167. won't turn over
  168. '07-'08 engine work?
  169. How far will 07+ EFI go?
  170. Iron or Aluminum Jugs?
  171. Any Good Step-By-Step Guides for Conversion?
  172. converted 883 oil type?
  173. N2 cams
  174. whats the next best move ?
  175. 883 conversion on my 06
  176. Rattle/knock after top end conversion
  177. Stage III for low RPM TQ or HI RPM HP?
  178. Second conversion in the works.
  179. Interesting 6 stoke engine.....lots of torque!
  180. Tomorrow I ride
  181. Knocking on Trottle up
  182. dealer does before and after dyno(break-in)?
  183. Conversion to something else???
  184. What Should I Do!!!!
  185. Any Deals on Buell Parts for Conversion?
  186. 2007 887 to 1200 what buy from zanotti?
  187. Inition upgrade question?
  188. Se Ign. 32839-00 Missing Instructions
  189. Help please
  190. Convertion: Stock 2007 883 XL to a 90 inch
  191. engine break in
  192. Ignition system on a budjet
  193. Buell Top End, Cams???
  194. Was the oil consumption problem ever resolved?
  195. Am I the first FI Sporty to break 100hp?
  196. Converted. What did I accomplish??
  197. Dan/NRHS question on head torque specs
  198. New Poll- CONVERTED RUBBERMOUNTS ONLY! Oil Consumption
  199. bare bones conversion
  200. question about 1200 conversion..
  201. Leaking oil
  202. conversion pistons and rings, what's the best?
  203. SE 1200 conversion What kind of pushrod for a good squish?
  204. Need some help
  205. Ducati heads on a Harley
  206. Oil consumption problem continued and hopefully resolutions
  207. NRHS 1212 Conversion advice
  208. 07+ SE 1200 Conversion kit retrofit to an 03 and earlier
  209. 1450 Sportster-- anyone done this mod?
  210. 91-99 W grind cams in a 2005 883 conversion?
  211. Cams & Exhaust Systems
  212. Suggestion for 2007 883 conversion.
  213. Bad-Habit's 1212 conversion
  214. NRHS what will this cost me????????
  215. Install Time for NRHS 1250 by a Professional?
  216. 1200 Sporster Sport 2009 Conversion Ideas
  217. Do factory rubbermount 1200 conversions burn oil?
  218. Piston ring orientation
  219. Ebay conversion kits
  220. Where are these pistons from??
  221. Help with hp guess on 1200 conversion
  222. 90"er comes to life!!
  223. 112 Cube Sportster Engine on Ebay
  224. Any input - Look at my plugs
  225. SE 883 to 1200 conversion for 03 and under models?
  226. Thunderstorm Conversion
  227. 1250 Bore
  228. Chrome My Jugs Pros/Cons?
  229. Street-able Head/Pistons? 15, 20, 30 Degrees?
  230. 2007 883 and a factory 883-1200 conversion.
  231. Compression Ratio
  232. 1200 thunderstorm heads with 1250 size pistons?
  233. 88 Inch Motor Finally Done!
  234. Wiesco pistons for Buell Or Sportster ?
  235. Doing 2007 883 conversion - stay with silver or go black?
  236. Piston Ring Side Clearance Issue
  237. Doing 1200 conversion on a budget?
  238. Cranking compression
  239. 1200 cylinders and pistons are here
  240. jetting
  241. mid to late 90's 1200 "W" cam in a 2005 883 conversion?
  242. 1250 conversion shipped
  243. Has anyone heard of a THRASHER kit for a sporty
  244. 883 1200 ?
  245. cast iron big bore completed
  246. Clutch questions for drag racing
  247. S.E conv. or 1250 NHRS.
  248. What cams with Thunderstorm heads?
  249. to do it or not...
  250. Christmas came early!