guy53 Posted November 22, 2011 Report Share Posted November 22, 2011 The big question! I am working on a TY frame and motor project that up to now was very clear. I have 3 A ( 434 ) motors one is in my std riding bike and I would prepare another one for my project, complete overall including a little porting, head reshaping, squish calculated, timing and flyweel weight removal. But yesterday I was offered a B ( 493-1... ) complete Ty. Now you know my question. I rode C and D model so long ago that I cant tell the difference between them. I'm not looking to start an argument over witch one is the best, but I would like your input on both model A and B. This motor will go in a D modified frame. Soooo... what do you think? Quote Link to comment Share on other sites More sharing options...
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