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View Full Version : Engines and Mufflers

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  1. OS 50 Hyper lean midrange???
  2. CURTIS MP2 50Q LR FOR 50 SIZE
  3. OS50 blew up today
  4. New O.S. .37 SZ-H
  5. Can't find this muffler
  6. 10% 15% 30%
  7. OS 91 Tuning info
  8. Kline Regulators
  9. YS 80 Manuals
  10. Gas G-23
  11. HYPER 50, WHAT FUEL?
  12. bearing help needed!
  13. rod broke on YS 80
  14. critical! ignition timing.
  15. Webra speed 55 GTH
  16. OS91 C Spec PS
  17. OS 50 Hyper Problem
  18. Why a YS?
  19. YS 50 ARRIVED TODAY
  20. TT 50 engine
  21. OS 91 C Spec PS 3rd needle settings
  22. OS50 Hyper crankshaft play
  23. Muffler spacer?
  24. MPIIQ or what
  25. muffler for Sceadu EVO 50