New Engines With Unusual Features.

A Description of Two New Dorman Power Units Recently Placed on the Market, One with Four Cylinders and the Other with Six. T N the search for further effi ciency, the power unit......

Coaling Valves Internally By Salt.

O NE of the difficulties eouf routing the designer of engines of high efficiency and of correspondingly high compression is the adequate cooling of the valves. There is not a......