Electric Water Pump
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Electric Water Pump
I recently spoke to a guy that claimed he got 20-25mpg on his truck by putting an electric fan and electric waterpump on his truck. Has anyone else done this? He said it did this by freeing up all the horsepower stolen by these items. I am interested in doing this for my truck.
Fleet Owner
Joined: Dec 2009
Posts: 20,678
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From: NorCal
That's highly unlikely. Be skeptical... very skeptical.
What engine? My 200-1v 68 Mustang can knock down 23 MPG but it's 1,000 lbs lighter and I was driving like a nun.
Maybe an extra 20-25 HP by eliminating parasitic drag.
What engine? My 200-1v 68 Mustang can knock down 23 MPG but it's 1,000 lbs lighter and I was driving like a nun.
Maybe an extra 20-25 HP by eliminating parasitic drag.
Postmaster
Joined: Nov 2011
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It may help mileage a bit but not near that much. Many/Most electric pumps are drag race pieces with low flow and short life. Plus you would need a really big alternator and extra wiring to drive it all.
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Save the old ones
Joined: Dec 2002
Posts: 666
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From: Boyne Mich
You still have to pump water and that takes energy. The energy comes from the alternator. Pay me now, pay me later, but you still have to pay. Nothing is free.
Hmmmm
Wonder why those new car manufactures are not using this energy saving theory to improve the mileage even more.
Take it from an engineer, every time you convert energy there is a loss. Belt to alternator, to electricity to motor to pump has more steps than belt to pump.
In drag racing, it makes perfect sense as you don't mind letting the battery drain for 10 seconds. ( if you're fast)
Like the others said, be skeptical.
Not trying to be mean.
Hmmmm
Wonder why those new car manufactures are not using this energy saving theory to improve the mileage even more.
Take it from an engineer, every time you convert energy there is a loss. Belt to alternator, to electricity to motor to pump has more steps than belt to pump.
In drag racing, it makes perfect sense as you don't mind letting the battery drain for 10 seconds. ( if you're fast)
Like the others said, be skeptical.
Not trying to be mean.
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Save the old ones
Joined: Dec 2002
Posts: 666
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From: Boyne Mich
Electric fans are a different story. They only need to run when the water is hot and they almost shut off when the vehicle is at speed. Water pumps on the other hand need to run all the time. When the fan is not on, it's saving energy.
Come to think of it, all the new car manufactures are using electric fans on everything.
BTW, how'd deer season go?
Come to think of it, all the new car manufactures are using electric fans on everything.
BTW, how'd deer season go?
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I looked up the electric coversion on summit racing and they have an add on part to the current water pump. flows 35 gph. even if you are drawing more power you would still pick up horsepower gains. even if you only increased to 16-18 mpg that would be awesome. I was wondering if anyone has done this and can give any new info.
Cargo Master
Joined: Sep 2005
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I looked up the electric coversion on summit racing and they have an add on part to the current water pump. flows 35 gph. even if you are drawing more power you would still pick up horsepower gains. even if you only increased to 16-18 mpg that would be awesome. I was wondering if anyone has done this and can give any new info.
#1 35 gallons per hour is nothing, a 2 row 20" wide radiator will flow 20 gallons per minute.
#2 scientific fact, You lose energy everytime you switch it's sourse. You can not gain buy charging enough electricity to run a motor to drive a pump.
#3 If infact he is gaining 25 HP, then you would need a 25 HP motor to run the pump and fan, any idea what a 25HP motor looks like?
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