Well, I finished my new contra piston and installed it in the head and on the engine. Mixed up the rest of the fuel for the ether I had with a mix of 30% ether this time, 25% caster and 45% kero. Still don’t have DII or cetane boost to put in. How important is this to the run ability. I have run across many people talking about how you only need 25% ether and don’t need DII. Is the DII really important, and also with larger engines like the .91 I heard that they don’t need quite as much ether as the smaller ones. It sounded like the higher ether was just used to get the engine started and then they went with a much lower percent. Is this true or just experimentation?
I have some Amsoil Cetane booster coming and will try some of that. Should I start with 2% or 1.5%?
I will try and find a larger prop. I have a 14x8 and the 15x5 but nothing bigger. Not many planes in my club that are that big.