Is this steam normal.. 1984 50hp Mercury

Faztbullet

Supreme Mariner
Joined
Mar 2, 2008
Messages
15,930
That is a non thermostat engine and uses internal restrictions in block/cover to control water flow and volume. It should have 2-5 psi at 2500 RPMs and 7-12 psi at WOT. Use a 15 psi max guage
 
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