I have 2 Yamaha engines for sale. 1 is a Laukatis blueprinted engine 52.20 bore. Engine turns over. Not sure how much time is on the engine.definately needs a top end. But to be safe a complete rebuild. 787 cylinder. $350. plus shipping. second engine is a old style cylinder 52.60. bore. definitely a top end, but to be safe a total rebuild. $250. plus shipping. Paypal preferred. Any questions, please ask.