S2000 Under The Hood S2000 Technical and Mechanical discussions.

Electric Water Pump Interest Inquiry

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Old Aug 21, 2003 | 10:44 PM
  #1  
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Default Electric Water Pump Interest Inquiry

I've found a good source for a electric water pump and electric themostat controller. I am posting to see if any one here is interested in a kit to replace our water pump. The benefit would be completely removing the water pump which would save weight and put much less drag on the engine (more hp to the wheels)

The kit would include
- Pump
- Electronic Themostat
- Custom Raditor Hose for Pump
- Mountiing Hardware
- Shorter Accessory Belt.

Cost would be some where about $500. It should save quite a few ponies. The exact number would be tbd.
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Old Aug 21, 2003 | 11:10 PM
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Hmm...how many Speed Ventures points would it be?
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Old Aug 21, 2003 | 11:17 PM
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Are electric water pumps reliable/large enough for road racing? I thought they were only for 1320 folks?
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Old Aug 21, 2003 | 11:20 PM
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no way. It's especially the road racers these pumps are designed for. I don't currently know the flow rate of the stock pump but the electric pump is capable of flowing 1300 GPH.

Oh yeah it would also keep running when you turn the car off till the water temp cools to a set level.
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Old Aug 21, 2003 | 11:26 PM
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I am interested. Thanks!

PS: It does save weight? I guess one saves weight for not having the water pump pulley, but it does save weight overall?
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Old Aug 22, 2003 | 05:21 AM
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[QUOTE]Originally posted by krazik
[B]no way.
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Old Aug 22, 2003 | 05:37 AM
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That's a big difference between the stock and electric isn't it?
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Old Aug 22, 2003 | 06:21 AM
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Prolene: I don't know what the stock pump weighs, but these are plastic so they only weight about 2lbs.

Cdelena: Thats good to know. They have 2 models, I'll likely go for the larger one then.
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Old Aug 22, 2003 | 07:02 AM
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On V8's, an electric water pump is good for about an extra 20 horses at the crank. I would guess we could get around 15 at the crank. But, $500 is VERY high for an electric water pump. The best ones for V8's are only in the $300 range.

Not interested for that price.
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Old Aug 22, 2003 | 07:05 AM
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Keep in mind too that the stock water pump needs to be able to flow enough water to keep the car cool in low engine speed conditions and high temp situations. Thus, most OEM water pumps have way too much flow capacity at higher rpms.

That's where the power savings come in for electric water pumps because you can size them optimally and they provide the same flow at _any_ rpm. Don't know what flow would be optimal on the F20C though, but 20 gallons/minute is a heck of a lot of flow (a garden hose at full blast might be 5-6 gallons/minute.

Krazik, any reason why you're looking at an electronic thermostat? If you're looking at the inline radiator hose pumps, you can retain the stock thermostat and save some money. Also, will you be developing a block off plate so that the stock water pump can be removed, or will it be left in place?

UL
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