Hi George,

I don't know why and haven't heard anyone give a factual reason as to why this engine was not produced. I could be that in that era, glow was the coming (arrived actually) thing and they decided that a diesel just wasn't viable at the time. This makes the most sense to me, but I don't know the real answer. This little .12 engine is nice to start and run, but I suppose they just didn't see a market for it.