Posted by pete 23 on January 10, 2013 at 16:30:45 from (74.32.229.189):
In Reply to: D-236 in a 460 posted by Fritz Maurer on January 10, 2013 at 16:11:18:
The good book never gave a maximum. They did at one time give new specs which were right about .032 if I remember right. I actually strived for much less when repairing with new valves and seats. Some times you can get by with flush with head but I liked to go about .010 as I did see one engine leave a very slight impression in piston with flush valves. There are different pistons though that have a slightly deeper recess so only way to know for sure is to test when fully assembled and valves adjusted. That is tricky also because the valve is not at it's closest to piston at tdc, slightly before on intake and after on exh. I have seen then down in head .080 for so and you had to light a fire in the hole to start them. Makes a tremendous difference in starting.
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Today's Featured Article - Madison's County - by Anthony West. Philip Madison has been a good friend of mine for quite some time. He has patiently suffered my incessant chit chat on the subject of tractors for longer than I care to remember, and on many occasions he has put himself out, dropped what ever it was he was doing, to come and lend a hand cranking handles, or loading a find onto a trailer. Although he himself has never actually owned or restored a tractor, he was always enthusiastic and always around helping with other peoples projects.
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