Fuel Economy

[slippy4]

In my classes we are getting a 6hp briggs motor. you get 150ml of gas and you have to make it run the longest. the only limitation to the contest is that you cannot alter the block, but anything else goes. what would you suggest on doing? anyone know the briggs motors? we have a 3.5hp motor apart and wondering if the cams are the same, it would be like a really really mild cam, could this work? any ideas? thanks

[Tri-Z Pilot]

I'd see if you could retard the timing, and try to get the lowest idle possible, less rpms, less gas.

[bigredhead]

try and make it run way lean as possible, bad for the engine,, but depends on the goal !