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The heater core can be bypassed without hurting the car. You will need 2 hose clamps and one piece of pipe about 1-1/2 or 2 inches long. The clamps should be able to fit on 1 to 1-1/2 diameter and the pipe should be able to fit inside the heater hoses. Remove the two heater hoses at the firewall and insert one end of the pipe on each hose to make a splice. Before making the splice, slide one hose clamp on the end of each hose for easier installation. Use the clamps to attach the hose ends on the piece of pipe. Don't forget to put some kind of plug in the open heater core holes where the hoses were installed - also don't forget to mark which hose went where so there will be no mixups at reconnection when you are ready.

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Q: Can you bypass the heater core and not hurt the car?
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