The tone this thread is taking is disturbing because member participation is being ridiculed. Everyone, even the beginner, should feel free to contribute, ask, or comment. There are probably 100 beginners reading for every post by an 'expert'. Keep this in mind when posting. Keep it friendly. This is a good thread so far.

This is the first crankpin story I've heard. I've run a .52 and have seen it run hard. I like the OS .50SX and I think the Evo beat it by a lot. Also, I think the engine was targeted to the upper end of the Chinese market. I would place Evolution quality as being better than OS.

Also, there was an interesting thread some 3 or 4 years ago if anyone wants to search for it (post the link here if you do.) I think the project took place in Europe, but someone tried to lighten a Saito engine as far as possible. He posted the results of each lightening effort. Not quite the same as porting, but still related as far as modding the internals.