- Jun 30, 2012
One thing which puzzles me is, if I am going to fit JS pistons and long rods, I would probably opt for 12 to 1 comp. to get more out of the methanol. But I suspect the piston crowns would he higher and heavier to cope with higher combustion temperatures. So I don't know whether I would be gaining. With the methanol, at higher comp you use more fuel to get more power. But most of the gain comes through latent heat of vaporisation which creates a supercharging effect. So I probably don't really need to go high comp.