I have just fitted a F100 powerhead onto my original F80, i am fitting the F80 carbs on now and will hopefully have the motor going tomorrow: the question i have is what do i need to do to get the F100 power;
You had best make sure the carbs carry the same part number and that they are jetted for the 100. Failure to do so means the F100 runs too lean and lean is not good.