Yeah, there is some combination of GX 31 and GX 35 parts that yields higher compression and more power, but I don't know what it is.... There was a guy doing cams for them too, but last I heard he wasn't doing them anymore. Check the boat forums. Those guys are real into hopping engines up and are very creative. They don't mind blowing a few engines up trying to find a good combo that works.

But if you really want to "rock" with a four stroke, try the Stihl Four Mix engines. There are several sizes in the 32 to 36cc range, and a brute of an engine; their Four Mix 65cc. Believe it or not, it makes about the power of a Zenoah G-62 engine, but with the sound and fuel economy of a four stroke. They are also a good bit lighter than the Honda engines, because they use a fuel/oil mix like a two stroke, and do not have a heavy crankcase containing oil and an oiling system.


AV8TOR