i cant run the engine i have in as it is ancient and looks as if its run many times before. i have said before (i think) that it is going in a hovercraft with very little engien access. i am using a diesel as i have found thay are wery cool runnung co it wont overheat in a small craft and the touque off it. i need to turn a 1.5ft car rad fan to provide lift. the engine will also have to charge up the nicad/himh batteries for the rc gear and the hundreds of fans on it.