Will one 5/8" heater hose valve on the hose from the manifold keep all the hot water out of the heater core, or should I also put a 3/4" shut off valve on the hose from the waterpump to the heater core? I prefer using the Manuel shutoff valves for my BB a/c system. Dutch
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Re: Manual shutoff valve
Only one valve is required. Either hose can be used, whichever is most convenient. -
Re: Manual shutoff valve
One word of caution. Lack of coolant circulation can cause localized corrosion (in the heater core in this case), so it's a good idea if the valve has a "pinhole" leak to allow very slight circulation when the engine is running or open it for a couple of minutes once every month or two.
DukeComment
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