He said the stop light was on a good few times so chances are it got pretty hot.
I love it when people say how hot it got on the gauge when you had a water system problem, just because the sensor that has no water to read off says it's not that hot in reality you have no idea what temperature it got to.
Got to agree with Welshy here, not because I'm saying it won't work but why invest a good bit of time and money then skimp having the head tested and skimmed and Imo even though it would work I'm sure the longevity of the engine will be affected.
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Ryan