Author Topic: CVFwater pump question.  (Read 3431 times)

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gregaba

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Re: CVFwater pump question.
« Reply #15 on: January 03, 2019, 07:58:18 PM »
Thanks for the info.
 Sometimes I get ahead of myself and with a little research I wouldn't have to bother forum members.
I am rereading your thread where you install an EFI system on your engine.
I am very interested in this and look forward to some more info on the subjest.
Thanks again
Greg

Russ67Scode

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Re: CVFwater pump question.
« Reply #16 on: January 04, 2019, 10:00:28 AM »
So if no water flows until the thermostat opens where is the water pump moving water ??? Is it dead headed ? 
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jayb

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Re: CVFwater pump question.
« Reply #17 on: January 04, 2019, 10:27:48 AM »
If its an electric water pump, and is not connected to the bypass tube coming out of the intake manifold, and there are no holes in the thermostat to allow water circulation, the pump is just cavitating and not moving any water.  If it is connected to the bypass tube coming out of the intake manifold, then it is circulating water through the engine, but not through the radiator.  A mechanical pump will usually be connected to the bypass tube, so it will be circulating water through the engine until the thermostat opens, at which point it begins circulating water through the radiator.
Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC