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derek costello · 10-29-2020, 03:05 PM

My rpm was at 1000 for the 60psi, it drops to 45lbs at 500rpm idle. I shot the hoses and the rad tanks and the readings were the same??? I always thought that if things were normal
you should see a drop of 20degrees from the top to the bottom of the rad with the fan working properly! But not the other way round....any other thoughts??

10-29-2020, 03:05 PM	#4
derek costello Senior Member Join Date: Oct 2019 Location: Niagara Falls Canada Posts: 117	Re: flathead engine temps? My rpm was at 1000 for the 60psi, it drops to 45lbs at 500rpm idle. I shot the hoses and the rad tanks and the readings were the same??? I always thought that if things were normal you should see a drop of 20degrees from the top to the bottom of the rad with the fan working properly! But not the other way round....any other thoughts??