Posted by jacks on March 15, 2020 at 12:53:54 from (209.202.224.123):
In Reply to: Valve job posted by Gary Mitchell on March 13, 2020 at 08:27:19:
If you are planning to use the engine at lower engine speeds (typically less than 3000 rpm) you will not get much if any benefit by installing hardened seats. Most old farm tractors can do their work running in the 2000 or less rpm range. If the seats in the block can be cut or ground satisfactorily, they will be fine for lower rpm use as described. Gasoline engines which will see hard service above 3000 rpm should have hardened seats installed. On a diesel engine, as has been mentioned, seats cut too deep into the head will cause hard starting. Here is a link to a field study done by the SAE (society of automotive engineers) and the US department of Agriculture which arrived at the the conclusion stated.
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Today's Featured Article - Grain Threshing in the Early 40's - by Jerry D. Coleman. How many of you can sit there and say that you have plowed with a mule? Well I would say not many, but maybe a few. This story is about the day my Grandfather Brown (true name) decided along with my parents to purchase a new Ford tractor. It wasn't really new except to us. The year was about 1967 and my father found a good used Ford 601 tractor to use on the farm instead of "Bob", our old mule. Now my grandfather had had this mule since the mid 40's and he was getting some age on him. S
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