| 摘要 |
An improved valve lock comprises a plurality of tapered arcuate sections that fit together to provide a sleeve that fits on the tip of a valve stem, with the inner surfaces of the arcuate sections having raised ridges thereon that mate with corresponding valve lock grooves in a valve stem. The axial position of the ridges in the valve locks of the present invention are modified from the position of the ridges for an original equipment engine by an amount sufficient to compensate for a change in compression strength of a used valve spring or a variation in position of the valve stem due to grinding of the valve seats or valve stems. Desirably, the ridges are positioned thirty thousandths (0.030) of an inch outwardly from the position of the ridged in an original equipment valve lock for an engine where the valves have been ground and new valve springs are used, and the ridge position is adjusted sixty thousandths (0.060) of an inch outwardly from the original equipment position when the valves have been ground and the original springs are reused. The valve locks are color coded to readily identify the appropriate valve locks for each particular application.
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