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Old 09-05-2021, 08:29 AM   #20
JM 35 Sedan
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Join Date: May 2010
Location: Near Rising Sun, Maryland
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Default Re: Running cooler - does this make sense?

I believe the washers, and every other vane removal on water pump impellers, started with the dirt track roundy round stock car racers who were running these flathead engines wide open throttle during most of the race. This helped reduce coolant loss which lead to over heating.
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