i am the guy that deals with diesel engines with pistons wieghting 2.5 tons

Is that the piston that weighs 5,000 lbs, or the engine itself?

Please tell us more about these engines. There are some motor-head techno-geeks on this board (myself, bonzi, schofiel, pca, n6mod, to name just a few) who would really like to hear more about this!

tanstaafl.