ThriftyT Posted August 11, 2019 Author Report Share Posted August 11, 2019 On 8/9/2019 at 5:09 PM, greg g said: So is the fitting on the water pump the heater return or the heater supply?? Can't wrap my head around the path! 3specially with the tstat closed, unless it doesn't completely seal The return I believe. Quote Link to comment Share on other sites More sharing options...
chrysler1941 Posted August 11, 2019 Report Share Posted August 11, 2019 On 8/10/2019 at 1:09 AM, greg g said: So is the fitting on the water pump the heater return or the heater supply?? Can't wrap my head around the path! 3specially with the tstat closed, unless it doesn't completely seal Yes return, basically it's a bypass for circulating heater water for defroster, Pre war engine didn't have built in bypass on head and pump. Quote Link to comment Share on other sites More sharing options...
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