I am new on the forum and trying to learn more about 6 cyl Chevys. i am a long time C1-C2 Corvette guy. I have owned the truck for a week now. What are these two items and are they necessary? Can I eliminate them?
1953 Chevy 3100 I have recreated my Dad's old work truck with a 5 window. Photos
The first picture shows an add-on water flow shut off valve (not original equipment) which can be used to shut off or restrict coolant flow to the in-cab heater core.
The second picture is of an original "optional" in cab heater "Ranco" control valve which is used to control coolant flow to the heater core. As this one appears disconnected/bypassed, assume it failed at some point and a previous owner used the add on valve at water pump to control coolant flow.
Dan
~ Dan 1951 Chevy 3 window 3100 Follow this story in the DITY Gallery "My Grandpa Carl's Truck and How it Became Mine" 1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)
redbird That first one is a summer heater shut-off, so you don't have a warm heater in hot weather. The second is a heater thermostat control to moderate your heater output. Both can be eliminated but you'll have some summer heat.
Since your in Texas you don't need extra heat on 100+ degree days so you can just make a loop of heater hose from water pump to thermostat housing and keep ALL heat out of the heater core.
Rather than making a loop which acts as a "bypass" just plug the the two outlets and make all the coolant go through the radiator...that's the way it would have come from the factory.
Mike B
Mike Boteler
1956 Chevy 3100 Resto Rod 1952 Willys M38 Army Jeep 1983 Jeep CJ7 Laredo 1984 Jeep CJ7 +++++ Silver Spring, MD
