So this morning the seeping thermostat housing started leaking rather more
vigorously. The reason for the seep in the first place is that the DPO
crossthreaded the cr*p out of the lower thermostat housing bolt, and I was
scared to tighten things too much when I installed the thermostat (there was
none) after getting the car here. The lower bolt that is in there is a very
mangled 5/16 UNC. The upper fastener is a 5/16 UNF stud. My objective is to
clean out what's there and then put a stud in so I don't remove any more threads
from the manifold.
The $64000 question is, what thread was originally used on the F4B thermostat
housing holes?
Theo Smit
tsmit@novatel.ca
B382002705
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