Knurling used to be done fairly often in machine shop of auto parts store I worked at many years back on cab and delivery truck engines, used cars for a couple used car lots. Oversize "Service" rings and a knurl piston with light hone got a lot of +.010/.015 wear engines back on road for another 50,000 miles. Rod and main bearings were often the .002/.004 undersized- like Ford stocks for some engines. Valves often got knurled guides and a lap job. Engines were termed "service/refurbished" instead of "rebuilt". JD light use- can you find the +005/7 chromed service rings anywhere? Or the next oversize ring that can be end machined gapped is what size? RN
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Today's Featured Article - A Belt Pulley? Really Doing Something? - by Chris Pratt. Belt Pulleys! Most of us conjure up a picture of a massive thresher with a wide belt lazily arching to a tractor 35 feet away throwing a cloud of dust, straw and grain, and while nostalgic, not too practical a method of using our tractors. While this may have been the bread and butter of the belt work in the past (since this is what made the money on many farms), the smaller tasks may have been and still can be its real claim to fame. The thresher would bring in the harvest (and income) once a y
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