Old Style
New Style
Old Style Yamaha Engines vs. New Style Yamaha Engines
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Old Style |
New Style |
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| The fin directly above the base fin is smooth, there are no numbers cast there. | The number "787" is cast in between the 2 lower cooling fins on new style engines. |
| This engine would be legal in Sr. Novice or Yamaha Pipe classes only. | These engines are legal in all BKC Yamaha classes. |