Dingy Outboard Motor
I couldn''t tell u the main difference between a 4 & 2 cycle. I''ve noticed that 4 cycle are alot heavier weight than 2 cycle, therefore tougher to transfer from the sailboat to the dingy, so i''d stay with the lighter. As for how many horsepower, u said u have an 8ft dingy, i''ll assume it''s soft bottom or u would have specified. You most likely won''t be able to plane in a soft bottom, so i''d stick to something around a 5HP (or less), again because of weight, but also price. More horse power probably won''t result in a faster ride. On the transom of most dingy''s it will specify what the max HP engine the boat will hold, i''d be careful about going over that. Good luck.