I have read numerous information on relocating teh tell tale to top of powwer head to avoid an air lock in the upper cylinder water jacket and it makes sense, however the procedure on where to drill doesnt make sense on my powerhead.
Can I drill a though hole in the cylinder head ? and head gasket ? it lines up directly into water passage
(Its already pre tapped NPT but not a through hole) pic attached ..
and run tell tale...guage form there?
I just rebuilt the power head (# 2 was blown) and did water pump and thermostat ....it runs great so far, but I dont want another melt down.
Please advise if you know what this pre - tapped spot on the head was designed for ? Or if I can use it ...seems like a good spot to me?