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Old 11-02-2008, 02:25 AM
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Join Date: May 2008
Location: queensland, AUSTRALIA
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both of these engines are hot race engines and with the side exhaust models the power output is very close between the two. there is also another top engine made by MB [ PROFI ] which is also as quick but even cheaper. what you should take into account is ; how good are you with race engines ? do you have money to re build them as they do where out alot quicker than the lower reving glow engines. also have you thought of racing Q-500 in the lower class that uses engines like O.S. and Thunder Tiger 46 sizes ?
the costs of replacing these 2 engines is cheaper than what you will pay for a Nelson etc crankcase. big doolars