Thanks to the many respondants I got about my '75 TR6
overheating/engine grinding/severe sadness problem.
Most ppl thought it would only be the water pump. So I
removed the belt off the pulley and rotated the pump
by hand - no grinding noise at all and free movement.
I inspected the thermostat and it moves freely, no
sign of sticking.
I just read in my Haynes manual (I know, not the best
but all I have) that: "Water/Steam being forced down
the radiator overflow pipe under pressure" (as was my
case) is a sign of a cracked cylinder head. But a
quick visual inspection of the head seal area didn't
show any 'apparent' signs of a leak.
My biggest concern is the crunching/grinding noise I
heard at low revs while it was overheating.
Thanks for your help, keep it coming.
Ian C
HOttawa
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