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Dyno for cujet
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[QUOTE="gwr, post: 899648, member: 60220"] marcus, Looking at that 612 graph, it looks to me that either the cam timing is wrong, or it has too much compression, if i was to guess, i would say it had lobe centres in the region of 115 and betwwen 95 and 100 you should try 108/109 you will gain a whole lot more top end and loose nothing thru the middle, i think you will find that 12.5:1 is about the most you want to go on the comp , as temp is the main killer on these engines in sidecars anyway. from all the testing i have done in the past , that 612 enginge should be up around the 65 hp at the rear wheel [/QUOTE]
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Dyno for cujet
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