TwinTurbo.NET: Nissan 300ZX forum - The VG's cooling architecture doesn't lend itself to using
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Subject The VG's cooling architecture doesn't lend itself to using
     
Posted by LitlElvis on December 18, 2009 at 7:07 PM
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In Reply To Electric waterpump thoughts... posted by NobleZ on December 18, 2009 at 01:45 PM
     
Message an inline water pump due to the placement of the thermostat being in the coolant return line from the radiator. If you place an inline pump in the return line it will dead-head at the thermostat, and I'm sure you understand why you do not want to place it in the outlet going to the radiator.

Sure, you can remove the t-stat and create a system that takes forever to warm up and allows the engine temp to flunctuate out of control, but what good is that?... Especially when you consider that the ECU's closed-loop function relies upon the engine maintaining a set running temperature.

Would you really trust your engine to that shoddy looking E-Bay pump? Is that what you would call "a better alternative" to my pump?... I hardly think so.

The other inline pump looks capable, but as you said, a block-off plate still needs to be fabricated - how much time, effort and material will that take? Mmmmmmaybe close to $250 all said and done? If the primary purpose of your excercise was to save money, I don't believe that will occur by going this route.

What I'm trying to say here is:

Yes, my water pump is expensive when compared to other e-pumps made for other engines. That price is due to the cost of manufacturing all of the custom parts as well as the cost of the hardware and the pump itself. That price buys a product that is 100% bolt-on and works with the stock t-stat in place. The only item not included is that the owner is required to install and wire the pump into the car properly. You can piece together something if you will, but it will quickly become evident that $600 for an electric water pump is a bargain.

     
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