I have a TR4 thermostat housing sitting on my desk. I am not positive
about what Comm# it came off of, but the transmission from the same
car is #CT23029. The bypass outlet has a rectangular hole
in the housing. This measures 0.330" by 0.645" or so. In the outlet
neck it tapers out to the 0.870-0.886" O.D. I have no others at hand to
compare. I thought this was the standard design. BTW, the part
number stamped on the top is THA1000/00.
-Tony
>>>>>>>>>>>>>>>>>>>>
>I was in the shed today looking for some parts and noticed that some of
the
TR4 water pump housings have a much smaller hole in the bypass outlet. The
exterior dimension is the same but the wall thickness is much greater.<
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