A comment here on the Kaiser-Willys F-head engine.
It is interesting that the two most common four wheel drives actually both had F-head engines in the fifties-sixties, but apart from the valve layout, the engines had nothing in common.
The Willys engine was an update of the prewar side valve engine, with the idea of improving breathing by using a larger inlet valve than could be accommodated in the side valve position, using the original camshaft position with a pushrod in place of the original inlet valve.
The Rover engine was a design that was planned for introduction in 1940 but dropped with the start of the war. It went into production about the same time as the first Landrovers, and eventually appeared in both four and six cylinder form from 1.4 to 3.0l, the last production being the Series 3 Landrover six of 2.6l in the early eighties. It had both the inlet and exhaust valves inclined, with the exhaust operated by a rocker from the camshaft and the inlet by a pushrod from the same camshaft. The hemisperical combustion chamber was formed entirely by the shaped piston head and the block, with the face of the head flat and inclined at an angle to the cylinder axis.
John
John
JDNSW
1986 110 County 3.9 diesel
1970 2a 109 2.25 petrol
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