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Dominion, Volume 14, Issue 108, 31 January 1921, Page 5

The average motorist pays little or no attention to his valve tappet adjustment. Yet it is a most important point/ about the proper upkeep of an engine. _ Noisy valves mean inefficient valves. Noise is generally caused by too much clearance between tho valve stem and the tappet lifted by the cam. In’ results in the valve lifting late, and not to its full extent, thus throttling the ingoing or the. outgoing gases. BuJ worse than this, it means that the valve is dropped on its seat with considerable impact, instead. of sitting down gently, as the natural contour of the cam would ensure it doing were the clearance not too greatIf there is a distinct variation as regards the relative clearances of the valves and the tapped in the same engine, the balance is bound to be affected, since some cylinders will be getting bigger charges, and therefore greater expansion _ than, others. This will make the engine erratic and unsteady in running, and will mean increased wear on the main bearings of the crankshaft, due to the unequal torque as between the different crankthrows. Considerable time and much care taken in adjusting and ver “J" ing the tappet clearances is well wortn while.,. It ensures a sweeter running engine, greater efficiency, and prolonged life. a' London correspondent writes that on. November 27 the marriage took place at St. Mary’s Church, Harlesden, of MrJohn Viviaii Walker, eldest eon of Mr. and Mrs. Walker, of Taihape, to Miss Doris Ingram Power, only daughter oi Mr and Mrs. George Power, of IValton-on-Thames. For throe years the bride was one of the V.A.D.’s at the New Zealand Hospital, and she will be well remembered bv many of tho staff and patients. Mr. Walker left New Zealand with the Main Body, returninr’hV-Sep-tember, 1919, with the rank of lieutenant in the Divisional Signal Company, after having had continuous service throughout tho war. He reached England by the last trip of the Rimutaka, and intends remaining there till about the end of this year.