I decided to change the thermostats about 2weeks ago. When I got to them they were stuck open and rusted pretty bad. So I finally got the new ones installed which was a real pain in the wazoo with the bubble exhaust in the way. I figured got the callon off might as well do the water deflectors in the block. That was simple compared to the tstats. Anyways got everything back together Friday night fired it up warmed up the motor on muffs and shut her down. Then Saturday afternoon retorqued the heads. Saturday evening I fired up the motor again on muffs and let it run. Then the overheat alarm sounded I shut it off and felt the heads were HOT. I was thinking there wasn't enough water flow so Sunday I took it to the landing and let it idle on the trailer every time the tale tell has been pissing hard. Overheat alarm again. Got home dropped the foot and impeller looks fine. Cracked open tstats housing to make sure tstats weren't backwards. Looked good from what I could see didn't want to remove yet as much of a pain as they were earlier. Ran compressed air threw the water jackets and no clogs. And removed heads to see diverters were in the same place. Basically I'm stumped she ran great before. Maybe I got bad stats both heads are running hot.
