Blocking water pump to heater core - ClassicOldsmobile.com


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Old July 13th, 2018, 09:13 PM   #1  
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Blocking water pump to heater core

Can you block the out from the pump and rear of the intake or just run a hose between them ? Going to start a engine on a run stand Car probably won't have a heater also.

Last edited by louie; July 13th, 2018 at 09:14 PM. Reason: Finish
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Old July 14th, 2018, 03:30 AM   #2  
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You can do it either way.
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Old July 14th, 2018, 05:50 AM   #3  
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Factory heater delete cars simply blocked the ports. There is no need to run a hose. Consider that there is no hose going to the rear driver side anyway, so what makes the passenger side different?
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Old July 16th, 2018, 07:08 AM   #4  
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For a quick job you can just throw rubber caps on them. Every rubber cap I've used in the past few years has failed within a few months, so keep an eye on them.
Next time you have the water pump off the nipple can be tapped for a plug and you can replace the heater control valve with a plug.
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