If to much teflon tape is used what would be the result? I don't believe it would stop at 205 all the time, not sure.
I suppose sensors vary but the ones Iíve used, or that I recall at least, are a compression fit between the base and the nut that holds it in. Itís subject to the temperature of the metal it mounts to, or thatís my assumption based on what Iíve seen with temperatures right there.
In a perfect world the water right there should be on the cooler side once the water was pumping through the block with an open system, it enters from the radiator right near there after all.
But I have physically seen higher readings with the sensor there, and surface temperatures with a heat gun.
My belief is the really close proximity to the exhaust ports heats the metal of the head in that area up. Especially iron. And when the coolant isnít flowing freely it will be worse.
Again, either location works fine, perfectly fine, but Iíve seen 10* difference as I recall which is not earth shattering. But we are talking about 205 now, 195 would be even less concerning. I still personally like to see temps closer to the stat rating though, but you are not overheating. Just watch it.
Thatís my experience at least. Results may vary, consult your physician.