I am installing a newly purchased water pump on my 100-4 and am finding it
to be a close reproduction of the original. However two fatal flaws exist:
(1) the heater hose tube is a different hole size and thread, thus
preventing replacement of the brass shut-off valve and (2) the casting and
machining prevent tightening all 3 nuts that hold the pump to the block.
Be aware of this when purchasing a new pump, it is likely there are many
with these negative qualities.
I will not mention the supplier as they are know for their quality products.
Best Regards,
Jim LeBlanc
1956 100-M
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