when it comes to engine building, i think there are a number of different schools of thought on putting the motor together. i just had my head done for my super m with the tisco kit from this site. new valves, guides, springs, machined in hardened seats. the engine guy did not use the guides that came with the kit. he was concerned with pressing the old guides out as they pass thru the cooling jacket, and did not want to damage the bores by pushing rust thru. sooo, he bored the guides and put inserts in them. he didnt put seals in. other guys will knurl the guides instead of replacing them, thought on that is the grooves in the knurlings will hold oil to better lube the valves. talk to your machine shop guy and see what he recommends.
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Today's Featured Article - Identifying Tractor Noises - by Curtis Von Fange. Listening To Your Tractor : Part 3 - In this series we are continuing to learn the fine art of listening to our tractor in hopes of keeping it running longer. One particularly important facet is to hear and identify the particular noises that our
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