REF: Engine Conversions & Upgrades

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====== REF: Engine Conversions & Upgrades ======

====== Performance Upgrades ======
Typical Staged Sportster Engine Upgrades ((Freud- XLFORUM))


===== Paying Taxes =====

Stage 0: Stock = HP- 40 for 883, HP- 50 for 1200 (average)

Stage 0.5 (also known as “The Harley Tax”)= HP- 50 for 883, HP- 60 for factory 1200 (Example)((Freud-http://xlforum.net/vbportal/forums/showthread.php?t=1606840))

  * Stock plus:
    * High flow air Cleaner  OR
    * SE Slip-On Mufflers or equivalent 
  
 


 



===== Stage 1 Upgrades =====

Quote: Stage 1 and Harley Tax are synonims and include Pipes, Air Filter and Carburetor re-jetting/ ECU re-mapping ((Freud-http://xlforum.net/vbportal/forums/showthread.php?t=1606840))

  * Stage 1.0 = HP- 60 for 883/1200, HP- 65-70  for factory 1200 (Example)((Freud-http://xlforum.net/vbportal/forums/showthread.php?t=1606840))
  * High Flow Air Cleaner AND 
  * High Flow Exhaust AND
  * Fuel/Air ratio adjustment : Jetting for carburetor, modify fuel tables in ecm with EFI bikes.
  * 
  *   
 === Known Stage 1 883 configurations ===
 This is just examples of what has worked on some bikes. Each motor may be different in it's own unique way.

883 Engines:
  * Carbureted / Year Model / Jetting / Mods:
     * .
     * .
     * .
     * .
  * EFI:/ Year Model / Jetting / Mods:
     *  Screamin' Eagle Air Cleaner/ Screamin' Eagle Slip on exhaust
     * .
     * .
     * .
     * .
 === Known Stage 1 1200 configurations ===
 1200 Engines:
  * Carbureted / Year Model / Mods:
     * .
     * .
     * .
     * .
  * EFI:/ Year Model / Mods:
     * .
     * .
     * .
     * .
 
===== Stage 1.5 Upgrades =====
 Stage 1.5= HP-65 for 883/1200, HP- 70 for factory 1200 (Example)((Freud-http://xlforum.net/vbportal/forums/showthread.php?t=1606840))
  * Stage 1 plus: 
     * Andrews N2 cams (mild) 
  *   
  * 
  * 

===== Stage 2 Upgrades =====

Quote: Stage II: Stage I plus cam upgrades ((rocketmangb- http://xlforum.net/vbportal/forums/showthread.php?t=1606840))

Quote: Stage II: Camshaft, Larger displacement, Higher compression ((Freud-http://xlforum.net/vbportal/forums/showthread.php?t=1606840))
  * Stage 2: Stage 1.5 plus: (Example)((Freud-http://xlforum.net/vbportal/forums/showthread.php?t=1606840))
     * Andrews N4, N8, or SE bolt-in cams instead of N2
     * SE S1 Lightning or other bolt-on +/- 10:1 heads
     * HP=75
               * Options:
                  * 2 into 1 header system, add +/- 7 hp
                  * SE carb (or equivalent), add +/- 3 hp
                  * XR750 (or other) valve springs, no gain
                  * Stage 2.5: Stage 2 plus
                  * Professionally ported 10:1 or higher heads
                  * Matching (to head) domed pistons
                  * XR750 valve springs or SE cam kit
                  * 2 into 1 header system
                  * SE,S&S Super E, or Mikuni HSR42 carb
                  *  HP=90+
               * Options:
                  * big valves (big twin size), add +/- 5 hp

  * 
  * 
  * 


===== Stage 3 Upgrades =====
Quote:Stage III: Its on like Donkey Kong ! ((rocketmangb- http://xlforum.net/vbportal/forums/showthread.php?t=1606840))

Quote: Stage III: Boring and/or Headwork and/or Forced Induction and/or Nitrous  ((Freud-http://xlforum.net/vbportal/forums/showthread.php?t=1606840))
Stage 3 =  HP- ????
  * Stage 2.5 plus:(Example)((Freud-http://xlforum.net/vbportal/forums/showthread.php?t=1606840))
     * Big-bore cylinders and pistons and/or
     * Stroker kit and/or
     * Nitrous injection and/or
     * Supercharging
     *  Options: many
  * 
  * 
  * 


 
 
 

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