TRIMMING THE VALVES.
If valves and valve-seats are out of order, they may be trued up either by ''grinding-in" with oil and some fine abrasing powder, or by the use of special tools, one for the valve face and one for the seat. The use of valve-trimming and facing tools is mechanically the better of the two. and it means less work than grinding-in, but in the hands of the novice there is always the risk that more metal will be taken off the valve and seating than is-desirable. Furthermore, whilst no special equipment is necessary for grinding in, the other method means going to a considerable initial outlay for the tool outfit. Grinding-in is quite simple and inexpensive, and these aro the main reasons why it is the univer-sally-adopted method. Of course, for repair shop work, such as overhauling, the tool equipment is indispensable, and no doubt a private owner having to keep more than one car in order would find it pay to uso the tool outfit.
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Bibliographic details
Evening Post, Volume XCI, Issue 107, 6 May 1916, Page 12
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169TRIMMING THE VALVES. Evening Post, Volume XCI, Issue 107, 6 May 1916, Page 12
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