Re: Heater core shut off valve
Quote:
Originally Posted by SCOTI
Apparently some later model vehicles require flow on the path to the heater core or suffer cavitation issues. I recently learned this & was not aware. These set-ups actually have a bypass that stops flow to the heater core (similar to these cut-off valves) yet allows for the loop to still circulate.
I learned about them on various LS swaps I've seen on the web.
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Yes I found this out when I bypassed the heater core on a 97 Buick Century. The heater core is an integral part of the cooling system. I installed a bypass valve that was for a Ford Ranger
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"You know that little thing in your head that keeps you from saying things you shouldn't? Yeah well, I don't have one of those"
1969 Mercury Cougar Standard 4 speed
1969 Mercury Cougar XR7 convertible
1970 4WD Chevrolet Suburban
1997 4WD Chevrolet Silverado Extended Cab Short Bed (purchased new January 1997)
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