If you can do without the electric starter you might be able to use a stock Honda 110 intake manifold. The hardest part is making an intake manifold and exhaust. The swap is really nothing more than cutting out the old engine and transmission mounts, setting the new engine in the frame and welding in new mounts. The instructions here aren't specific at all because you really need to eyeball everything and work it to your particluar installation, but it can be installed without modifying the main frame tubes. Might be a good excuse for you to finally get that MIG welder you have been wanting. Tell them it is for a Rokon engine swap and they will throw in a free ignition coil.Īs for the swap, it really isn't all that difficult but requires basic welding and fabrication skills. These come with a 4 speed transmission and even an electric starter. These engines run about $550 (depending on exchange rate) and you can get more details on these engines here. There is a Chinese copy of the Honda 110 available built by a company called Jainshe. You dont want a beat-up old piece of junk that is hard starting or on its last leg. It is possible to grind down the engine case for chain clearance, here are before and after pictures of this:Īnother issue is finding a Honda engine to swap in. This has led to all sorts of work-arounds like tilting the engine, moving the engine forward in the frame, using a jackshaft, moving the rear miterbox, or even extending the bike a few inches. First is the engine case on the Honda is in the way making it difficult to run the chain directly from the engine sprocket to the miter box sprocket. While Rokon/Honda 90/110 engine swaps aren't uncommon there are a couple problems. If that Power Bee is about half dead and you'd like to swap in another engine, maybe something a little more quiet, this might interest you. Swapping a Honda 110 engine into a Rokon Trail-Breaker
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