What is the physical diference between ATX and BT50 engines? Bore / stroke ratio is the same, so is it possible (as I heard recently) to just install BT50's piston in ATX and get ATX with BT performance? (max speed 80 km/h, 4 kW at 8500 rpm and torque of 5 Nm at 7500 rpm) Or do I still need to install complete new engine. What about the fuel flow and exhaust? I know it is easier to get BT instead, but ATX is the most beautiful little bike I ever saw, I feel more comfortable with its suspension then with BT's and I like its off-road capabilities (no matter how limited). Pitty ATX have so wussy engine. And I know that high rpm-engines are not suitable for off-road riding, but if I wanted to climb stairs with my bike, I would go after 750cc enduro :) Please help if you can, I am already offered a beautiful MZ ETZ 251 with oil pump and disc brakes, so temptation is heavy. :) -- PGP keys available via keyservers, finger or at www.rcub.bg.ac.yu/~lupusy Both keys are under the same UserID
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