I have finally gotten the heater mounted back in place in the Yellow Peril and wish I had kept better
track of how the heater hoses were routed.
(I have listed this as a 200 model because the 200s had the same heater and many of the 140/164s didn't.)
The line from the water pump is the suction line, so the line from the back of the head is the pressurized one.
I have hooked the heater core tube facing left to the heater valve and to the lower firewall port (pressure).
The other tube from the heater core faces right and I don't see a reasonable routing for it
other than going pretty much all the way around the heater and back to the lower firewall port
(which is curved and faces downward and to the right).
There sure is a lot of SHARP stuff in there to tear up an old man's tender skin!!
Few tears but plenty of blood and sweat!
The only applicable manual I have is for the 1975 164. It gives a lot of good info about the heater
but nothing about the routing of the heater hoses.
So any help you heater gurus can give me on how to route the hose that goes to the right from
the top of the heater will be GREATLY appreciated!