Johnson 55 running cooler. (stupid question?)

[steviecops]

Hi<br /><br />Please excuse me if this seems like a stupid question.<br /><br />I replaced the thermostat and pressure relief valve in my 1980 Johnson 55 about 6 months ago. The old thermostat was stuck open and the engine was running too cold.<br /><br />With the new thermostat, the engine ran at 145 degrees and idled a lot better, but I could barely touch the top of the head for more than a second without getting burnt.<br /><br />The other day, whilst out fishing, I checked the temperature of the head and found that I can now hold my fingers on the top of the head for a lot longer, 20-30 seconds. It still feels hot, but not hot enough to burn me.<br /><br />Any ideas what could be happening here?<br /><br />Thanks in advance<br />Steve

 

[DJ]

Re: Johnson 55 running cooler. (stupid question?)

145 degrees (F) is your bogie.<br /><br />Check with heat sticks or a heat sensing device.

 

[steviecops]

Re: Johnson 55 running cooler. (stupid question?)

DJ<br />The 145 degrees (F), (63 degrees C), was measured with a heat sensing device. When you say that 145 is my bogie, do you mean that is what it should be?<br /><br />Just wondered why my engine seems to be running a bit cooler than before.<br /><br />Thanks<br />Steve