O360 GAMI Spread Awesome exept for #3

[Bugsy]

Just performed a GAMI spread to measure fuel distribution on my O360. 65% power #1,#2,#4 all peaked at exactly the same fuel flow. #3 peaked substantially later. GAMI spread would have been 0.0 if not for #3 which took the GAMI spread to 0.7.

Any hints on how to get #3 to peak earlier?

 

[petehowell]

Carb heat

Try a bit of carb heat. Works great on the O-320.

 

[schmitty340]

Try a bit of carb heat. Works great on the O-320.

+1 on the carb heat. About 1/4 carb heat at cruise power levels out my O-360

 

[Bugsy]

Thanks fellas, if I were to wrap the intake tube on #3, would that help the cylinder peak earlier or later?

I surmise wrapping the intake tube would increase the density of fuel/air and make it peak later, but I'm going back and forth on my logic.