Originally Posted by Brutus1967
Now I am trying to "unleash all that power"
by keeping the engine cooler, as there is definitely a fair amount of power extra at lower engine temperatures. That was never there in such amounts: when the engine was still glow, the difference between hot and cold was a lot less and the mixture range over which the engine ran good was a lot smaller.
But it is just.... I have had the fortune to see Bell 47 G's with the open pipes on that 6 cylinder Lycoming, and the sound of the OS , the flight performance of the helicopter is so very realistic, I can't just decommision it....
If you want to unleash the power & reduce operating temperture, set the timing to @ least 34* BTDC, 36* might be even better.
My FA91S made about the same power on CDI compared to GI when timing was 28* BTDC. It responde very well & increased RPM up to 35* BTDC & remained the same @ 37* BTDC so I backed of to 35*.