Le Roi Air Compressor Parts Anyone Know Any Details On A Le Roi Air Compressor From The 1930's?

Anyone know any details on a Le roi air compressor from the 1930's? - le roi air compressor parts

I have an old compressor 1930, the trailer behind the school. Who has the old wheels and a diesel engine on six large, it naturally aspirated. Can someone help me identify this engine? There are very few traces on the engine, took one look at the side of the block. I also know that a cycle of two, but that's all.