lumi-num water jacket,and the wellknown combina-tion valve tappetand valve stem.Even in theseparts there are changes, notably in the heads of the steel cylinders, whichare very much thicker, a change which has been found todo away almost entirely with valve warping. Probably thethick cylinder head… … Rear view of Wright aeronauticmounting of altering the shape of the exhaust valve ports. These areoval in normal section, giving a large area with but smalldepth, so that there is plenty of room for water beneaththe ports and above the cylinder heads. Tests on theblock and in the air indicate that…
Automobiles · Aeronautics
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