Reply To: Draining the Swamp!

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Somewhere in the old Pierce Arrow shop notes (factory) I remember reading that they recommended grinding the valves every 20 to 25 thousand miles, changing the head gasket (of course), and flushing the radiator every year. In those days it was probably unlikely to travel more than 5000 miles a year, and at speeds of less than 50 MPH. I travel 25 to 35 thousand miles per year and find that only a little abnormal. So with 100,000 miles on the car it is like 20 years of its life! These are good engines, and I’m surprised at the crack in the block. It got overheated somewhere along the line and destroyed itself. If you have to rebore the engine, consider doing all cylinders to maintain equal balance, and slightly over bore, mill the block and the head and raise you compresion ratio to 6.5.