Originally Posted by Jerseydave
I never relocated my sensor to the cylinder head, but I did check it with the infrared gun. Cylinder head temp was close to 160 as I recall from last summer, but the area where the sensor is near the mixer was much colder. Boat always ran great, never ran hot. Sometimes at idle the guage would climb to 160 and then drop after accelerating. I assume everything is working as it should.
I may still relocate that sensor this spring and see where that takes me. I like to have accurate temp reading while using the boat. Don't want to overheat that LT-1!
You know your engine has two thermostats, right? If the second one is sticking open, it will never get warm.