NM: Thanks for response, just as I was reading your note yesterday, the mechanic
showed up albeit late (or right on ilon time)........
He also said 160 degrees was not a problem but his boss later said it would be probably a good idea to peek at the thernostat & cap.
To your question, yes the engine will rev freely up to nearly 4000 with no load (surveyor tested that on Monday.
The mechanic ended doing a "visual" inspection & compression
Visual = Clear with the exception of exhaust elbow
Compression Results .... Dry = 200 on two and 220 on one, Wet = 310 on 2 and 300 on one
We also pulled oil & it was sent for analysis.......
I'm on my way back home with a new "discoveries" about this boat.