I forgot to add - one trick I have used when I figure an engine it running too hot - try taking a blowgun attachment for an air compressor and aiming it right at the head (make sure not to influence the air into the carb) to force cool it. You can tell immediately if the engine cools off some and starts to run better. If it is an issue of inadequate cooling, you can always build an electric fan!

AJC

PS in my previous post I in no way meant to disagree or agrue anyone's opinion, just posing a few questions and observations of my own. We should all try and work together to make this fun and a learning experience. If anyone wants to know what I have done, experimented with, etc pertaining to diesel conversions by all means just ask. I will gladly share my limited knowledge with you