I have been flying with a 1641cc on my KR-2 for years with no problems. It 
cruses at about 100 at 2500 rpm with a 54x34 prop, and uses about three gallons 
per hr. of 100 LL. Climb rate varies with OAT. It's about 600 ft/min. It's got 
a Bendix mag., single ignition.

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