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1969 9.5hp evinrude testing the cooling system

Re: 1969 9.5 evinrude testing the cooling system

The way I used to do it was to change the water pump on a regular basis. Then you don't need to test. Otherwise, I would measure the cylinder head temperature.
 
Re: 1969 9.5 evinrude testing the cooling system

What is the temperature suppose to be ? And do I measure the temperature everywhere on the head to find the highest reading ?
 
Re: 1969 9.5 evinrude testing the cooling system

look for a temp around 168 deg- 190 deg, at the end of the piston stroke., (end of the block, or the head, you will be able to tell very fast where the hot spot is.)
 
Re: 1969 9.5 evinrude testing the cooling system

The discharge water felt hotter than other motors I have worked on. How do I know I am overheating prior to causing damage ?
 
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