Join Date: Feb 2007
Location: Carrollton, Texas
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Rep Power: 11
Despite the fact your water temp appeared to be low at the time of the incident it sounds like the engine may have overheated and eventually seized. The fact that it started and appeared to run fine later almost verifies this. I would check the lift pump for sure and the indicating system to ensure all is well.
Overheating and lockup is never good for an engine but if it already has a lot of hours on it, this incident may not have as much of a destructive effect as if the engine were new. A mechanic with a borescope should be able inspect the cylinder walls and combustion chamber to ensure the valves are okay. I don't think the incident involved any of the crank or rod bearings but it sure puts additional wear on them during the overheat and seize phase. The pistons and rings take the real hit so have the mechanic do a compression check also.
Opportunity is missed by most people because it is dressed in overalls and looks like work.