1) Engine technology
Found on
https://www.crosswordclues.com/clue/t-head-engine
A T-head engine is an early type of internal combustion engine that became obsolete after World War I. It is a sidevalve engine that is distinguished from the much more common L-head by its placement of the valves. The intake valves are on one side of the engine block and the exhaust valves on the other. Seen from the end of the crankshaft, in cut...
Found on
http://en.wikipedia.org/wiki/T-head_engine
No exact match found.
