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Flathead inboard overheating

J

Jim Dunn

Guest
" Fresh rebuilt Gray 4 cylinde

" Fresh rebuilt Gray 4 cylinder overheating at 2400 rpm's and above. The higher the rpm's,the hotter the temp. Back down and the temp decreases faster that it increased.Water pump is working good(I think/water is flowing out the exhaust)Was told that new rings will cause the motor to run hot at speed until they break in(motor has 5 hrs)Any thoughts on this one?Thanks "
 
Flat head "47" ace ma

Flat head "47" ace marine Chrysler.

Thermostat gone "need new one."

If not need bypass instructions
 
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