1989 88 hp over heats

[jcturtle]

Hello, I have an 88 hp that did not overheat in April when we bought it.
I changed the thermostats and water pump, now it overheats after 5 minutes
on the starboard head. The head temp is 120 on the port side, and
170+ on the starboard side. the compression is 110 110 110 105.
I run it on muffs. Any ideas as to what to check next? Thank you, John
I am using a digital temp probe. The thermostats opened at 145 in a gl*** of
hot water.

[boats.net]

Running on muff is not a good test when checking for an overheat problem, put it in water and recheck.