For example, sliding sleeve valve designs allowed larger intake and exhaust ports, a central spark plug location, no valve springs, and the carbon (or coke) build-up from burning low-quality ...

WHAT if speed isn’t just an advantage but the new standard in servicing? Every second counts – and downtime counts tenfold.

When the work was completed, the hole. bored in the plug was stopped up with a piece of metal, and the plug was replaced in the engine for service. The valves were placed in the lathe and faced ...