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  1. Makiing a Port Map
  2. 503 DCDI electric start
  3. Help Identify this Belt Drive?
  4. Very Good Read on Bearing Failures
  5. CHT Sensor Installation
  6. Rotax 503 - one cylinder running rich
  7. Ultralight Engine
  8. Ultra prop adjustment for RPM
  9. Old Rotax 447 no spark
  10. Exhaust attatchment
  11. Old store oil
  12. Re-jetting a Bing 54
  13. Sorry non aircraft question re a 2 stroke.
  14. Amsoil at 100:1 - good or bad?
  15. Good Video on making Custom Sleeve
  16. MZ202
  17. Honda GX race engines- 35 lbs and 25 hp
  18. Would you like to see more New Replacement Cranks, & Rod Kits, Pistons, etc.
  19. rotax 447
  20. Rotax 503 - only one cylinder running
  21. BRP XPS 2-stroke oil
  22. Any good airplanes that use small hirth engines?
  23. Rotax gearbox swap
  24. 3D Printing?
  25. Lord Engine mounts - take 2
  26. Brand of gasoline affecting EGT?
  27. Rotax gearboxes
  28. Falcon dual EGT gauge issue
  29. Rotax 503 - oily leak from power wire port
  30. Need Help with my Kawasaki 440A2 with 2.667 re-drive and 59" 3-blade ultra-prop
  31. Possible new directions for the 2 stroke, looking to overcome reliability concerns ?
  32. 582 Rotax Coolant
  33. Rotax 503 EGTs
  34. Possibility of a sticky in this forum listing all current vendors for Part 103 engine
  35. How to make your own Gaskets
  36. Turning redrive 180 degrees
  37. more compression backwards ??
  38. Mounting a prop on a Rotax 503
  39. 3W 200 B2 Firing order
  40. Peak Intake Flow Rate/Peak Horsepower Calculator
  41. ROTAX 800R E-TEC ENGINE for Aircraft use?!?a
  42. Electronic RPM Limiter for 3W 200 B2
  43. Kawasaki 440 A, anyone running dual carbs
  44. Highest HP Stock Skidoo/Rotax Single - 36hp
  45. Is it possible for carbs on a Rotax 503 to form ice on the ground?
  46. Rotax 503 - engine miss during climb out - video
  47. Wankel Rotary
  48. Rotax 503 - air filters wet with fuel
  49. Here is a Turbo Charged 125cc Single!
  50. Any Body running straight 100LL in there 2 Stroke?
  51. Rotax 503 vs. VE Big Bad Twin
  52. Kawasaki 340/400/440/550 Rods?
  53. Tach for points ignition 503
  54. Wiring information on Rotax 503
  55. Over voltage on Rotax 503
  56. Best 2 stoke engine for ultralight flight like easy riser under 300$?
  57. Excessive fuel consumption? - 503
  58. About Lycoming YO 233
  59. If you know of any current made Belt Drives for Rotax's/Kawasaki's!
  60. Checking gear oil on inverted 503
  61. DLE200
  62. I like this. Anyone using one?
  63. any experiences with 620 or 720 rotax?
  64. School me on point ignition - Rotax 503
  65. New to Rotax 582's
  66. cheapest engine for skypup?
  67. ROTAX 277 (two stroke, single cylinder) Questions?
  68. Laser Ignition
  69. Rotax 582 prop loading question / conundrum
  70. Kawasaki 440
  71. 100 mpg airplane? or why I want more information on Simonini engines
  72. Simonini engines
  73. Rotax 277 with electric start
  74. K Drive : still available?
  75. Rotax 447 and 2 strokes in general
  76. Limbach L275e 2 stroke engines
  77. geared or ungeared?
  78. Any problems with inverted mounting of Hirth?
  79. Rotax 582 grey head
  80. Where to buy viton seals for Rotax 503?
  81. Help needed with removal of Pinion Gear from Rotax 447
  82. How to find out the year my Rotax 503 engine was made?
  83. Any 125 hp belt redrives?
  84. Sorry its not an a/c engine question.
  85. Older Hirth 2703 - Need wiring diagram
  86. Electronic Ignition Amplifier or HEI Ignitor for Kawasaki 440a
  87. A question about this used 582,
  88. Cuyna 2SI 808 L100
  89. rotax muffler mounting
  90. rotax rpm
  91. Need help identifying this engine.
  92. I wonder how this 2 stroke works.
  93. Best oils for the E gearbox
  94. Tachometer for 503 with Bosch Ignition
  95. Starting a Rotax with g/box by propping?
  96. 2-Stroke Miller
  97. Rotax Exhaust
  98. mz 201 or hirth f23
  99. 2SI 460 F40 engine parts
  100. Rotax 447 stops after 1 min
  101. CDI for radial engines
  102. Compact Radial Engine
  103. Care and Feeding of the Rotax
  104. Grass cutter engine for Skeeto replica
  105. Ignition timing off?
  106. What size of the Rotax 503 cooling fan belt is?
  107. Plug Caps
  108. Alternate to Rotax Needle Bearing 18*22*21,8 for Rotax 447
  109. Where to find affordable parts for bing 54 carb?
  110. Rotax 377 won't start
  111. No spark Rotax 447
  112. How wide of a belt for a redrive?
  113. Rotax 617/618 hp
  114. Ideal aircraft engine power curve?
  115. Paramotor engines for a fixed-wing ultralights?
  116. Ski Doo 503 snowmobile engine for ultralight help
  117. Carbon build up
  118. snowmobile to turn 38-42" pusher prop
  119. Looking for a 80hp engine.
  120. Kawasaki 440 problems
  121. Westlake 2 Stroke Opposed Piston Diesel
  122. spark plugs
  123. kawasaki 440 engine speed, and measuring Tiny Tach
  124. 2 stroke info
  125. Rotax Ignition problem. Am I a idiot or just having bad luck?
  126. PatAT Asymmetric Timing in Two-Strokes
  127. Tuning the DCDI 503
  128. My devious plan to turn a 4 stroke into a 2 stroke.
  129. micuni carb problem
  130. Rotax..Points Verses Electronic ignition....
  131. 2 stroke parts vs 4 stroke parts
  132. Question about Brian Carpenter's talk about 2 stroke
  133. Question about Hirth F-23 LW engine
  134. 3w engine
  135. Envirofit.org
  136. I don't remember Hirth made a heavy fuel direct injection engine.
  137. Rotax 503, or 582, Air Filter Mods
  138. 50HP, 5000USD two-stroker
  139. WHO MAKES A BILLET CRANK FOR
  140. 2 stroke v8
  141. Model DI 2 stroke project.
  142. A must read for 2 stroke enthusiasts.
  143. Reinforced Rotax 582 crankshaft and replacement pistons
  144. Big monocylinder adaptation ?
  145. 447 Backfire
  146. Zenoah G50D engine crankshaft sevice life extension
  147. 2 Stroke Needle Bearings
  148. 503 weak pulse?
  149. Education Needed On Propellers
  150. 277 Rotax Rebuild Questions
  151. would ski doo snowmobile rotax engine work for an airplane
  152. rotax gear box oil
  153. Fuel
  154. New guy from Maine with a Rotax 503 engine who needs some knowledgeable help.
  155. V8 Two Stroke With Expansion Cambers
  156. "A" gearbox from 277 to 377
  157. Rotax wanted
  158. Rotax Wiring
  159. Question about connecting rod big end
  160. In search of the 'possible' dream
  161. 277 Oily Spark Plug
  162. 2si Cuyuna Rebuild help part 2...
  163. Engines Choices Now There Are 3
  164. Simonini mini 2 evo vs. Hirth f-33
  165. fuel questions
  166. New Guy with no where else to go..(help)..
  167. Rotax 277 Numbers
  168. 1984 kawasaki ta440a
  169. I need to identify this Rotax 440 engine so I can get correct spark plugs
  170. Need help with a Kawasaki 440 A2 engine - Not enough power !!
  171. hirth 2706 65 hp
  172. Thought Experiment: 2 Engines, 1 Prop...
  173. need some help
  174. Rotax 582 overhaul
  175. Phantom Engine
  176. Are these Rotax 582 crank-shaft parts available
  177. converting points to cdi on rotax 447
  178. wiring diagram for hirth 2702
  179. How far on the exhaust manifold should probe go
  180. Bailey Aviation'n new 2-stroke boxer twin, the Hornet
  181. help with wiring on Kawasaki 440
  182. Rotax 582 wet fouling
  183. Where to find a reasonably priced new Bing 54 carbs for Rotax 503?
  184. Faulty tachometer impacting igniton system ?
  185. rotax 447 rebuild
  186. Zenoah 45hp ultralight engine has lost power, one cylinder smokes and runs cooler
  187. Rotax 503 dc rpm surging with no input from me.
  188. Mounting a Rotax 493 Upside down
  189. cuyuna engines
  190. 340 kawasaki
  191. Motorbike Engine?
  192. Help identifying this engine...
  193. Blue Max oil
  194. Two Stroke tuned exhaust
  195. Mikuni Carb and choke cables
  196. ARROW GT 500
  197. Marine Outboard 2 stroke exhaust question.....
  198. YAMAHA KT100 ENGINE.
  199. Cheap Ebay Bicycle Motor Kit for Prop?
  200. Semi and direct injected 2 stroke engines
  201. What do you guys think about the circlecycle engine
  202. 2-stroke piston pins
  203. Rotax 277 problem
  204. Rotax 582 exhaust
  205. Safest most reliable way to operate a 2 stroke?
  206. Cowling For 582 and Carb Ice
  207. Big 2 stroke
  208. Daiichi Kosho DK 472 engine or not??
  209. hirth f23
  210. I need Help identifying and engine
  211. question changing needle jet rotax
  212. Rotax B gearbox and max power
  213. Is your two stroke engine about to fail?
  214. Max RPM setting for the 503.
  215. Mcculloch 90 hp drone engine on a minimax airplane
  216. Rotax 583 Dual ignition head???
  217. KFM 107E Maxi engine
  218. Rotax cog belt
  219. Adapter Plate Drawings???
  220. 2 stroke Crank rebuild tools???
  221. Other Sled Engines used on Airplanes???
  222. ROTAX 462UL SPEC'S
  223. ROTAX 3D SOLID MODELS???
  224. Any ROTAX 277UL, 377UL, 447UL, 503UL Big Bore Options???
  225. Anyone know why this type of engines never caught on?
  226. Zenoah G25B-1
  227. Can you identify this engine?
  228. New Gates Fuel line woo hoo!!!
  229. 503 Rehab
  230. Converting a Fan cooled 503 Rotax to free air cooled
  231. Mikuni/Bing?
  232. 503 Rotax
  233. Starting a Rotax 503 after long storage
  234. 582 Conecttion Question
  235. Proposed Engines
  236. How long do you run your air cooled Rotax before going to take off power.
  237. Flying a 2 stroke.. Noob needs some advice..
  238. Rotax has released a Mandatory Alert
  239. Could anyone identify this engine?
  240. Rotax Exhaust
  241. Rotax 447 lose rpm
  242. McCulloch 6 cyl Drone Engine
  243. Problem starting my 503
  244. 503 Head Gasket leak
  245. My MXII electrical wires
  246. Trying to decide which engine
  247. Kawasaki 440 good or bad????
  248. Rotax 582 Thermostat
  249. Can you tell me what your 503 CHT normaly runs at.
  250. HELP me get my Quicksilver MX II running please!