heater core bypass valve?

I just rebuilt the heater on my '66 coupe and realized that the coolant always runs through the core whether the heater is on or off. This is ok during the cool winter months but not when it hits tripple digits in the summer. Does anyone know a way to bypass this easily that will be reliable in this kind of system? I don't want to have to disconnect the hoses every time.

Thanks,

Mike

Reply to
majcrash
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A lot of your older vehicles had an in-line control valve that was cable operated. I can't be specific for the years and models, but a lot of older vehicles had it. It was a simple system that I wish all cars still had. Find a good mom-and-pop parts store, or if you are REALLY lucky, maybe a chain store could help you, but describe this to them and maybe they can help you out. About the only thing you should have to tell them is the diameter of your heater hose. Put the valve in the hot side, not the return. This valve should do everything you want, and will not hurt the resale value of your car.

Reply to
Kruse

My Thunderbird has an inline valve that is vuccum operated.

Reply to
WindsorFox

The heater doors effectively isolate the core and I never noticed the heat that much on my cars.

If you want a cable controlled valve though, Mill Auto in Cleveland stocks them. Check out G,H on this page

Reply to
TM

Most of the cars were. I think a lot of early 60s trucks were cable operated. Even the heavier trucks like the F500 trucks were cable operated way past the 70s or 80s.

Reply to
Kruse

The heater doors do isolate the core from the incoming air but the entire box heats up and radiates heat into the car after driving for a while. The box is very warm to the touch since the core is new. I have ordered a cable operated valve and that should solve the problem.

Mike

Reply to
majcrash

Make SURE, on your car, that the coolant has a bypass route from the upper manifold to the water pump!

That constant flow has another purpose

Reply to
Backyard Mechanic

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