Re: answers for piotr and nate
It's simple - you do not have an ignition source in the cylinder (the spark). The mix explodes due to the compression of it (physics - increase in pressure=increase in temp, and eventually an ignition of the mix). When you max out the diesel, it will just go as fast as it can and no more (i.e. no 'engine blow out'). If the engine is in good shape and has fresh oil, you just have to watch out for the engine temp. If it starts to warm up, just slow down a little. Actually, the european and Japanese engines like to be overrevvd sometimes. Opposite to big, low RPM American engines.