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Jim/GA · 04-08-2020, 09:28 AM

I agree with Brent. As long as the water jacket back behind #4 is cleared of rust and trash, so that the coolant flows through there, it's not significantly hotter than the other cylinders.

It would be interesting to see if there are any memos or other documentation in the Ford Archives discussing why the elongated hole was added. Cavitation is a real possibility.

04-08-2020, 09:28 AM	#5
Jim/GA Senior Member Join Date: May 2010 Location: Young Harris, GA Posts: 1,821	Re: Cylinder #4 Running Hot I agree with Brent. As long as the water jacket back behind #4 is cleared of rust and trash, so that the coolant flows through there, it's not significantly hotter than the other cylinders. It would be interesting to see if there are any memos or other documentation in the Ford Archives discussing why the elongated hole was added. Cavitation is a real possibility. __________________ Jim Cannon Former MAFCA Technical Director "Have a Model A day!"