Electric water pump for 2006 4.0 - Ford Mustang Forum
 
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post #1 of 4 (permalink) Old 05-04-2011 Thread Starter
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Electric water pump for 2006 4.0

Hey all,
Who here uses an electric water pump on thier 4.0L? What brands are available and what belt size is required when taking the belt driven pump out?

Thanks,


Lee Yoder

Redfire Metallic 2006 4.0L V6
JLT CAI, SCT 93 Octane Performance tune, GT Take-off Rear Swaybar, Screamin' Demon Coil, NGK plugs, Borg-Warner cables
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post #2 of 4 (permalink) Old 05-04-2011
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Just curious, why do you want to go to an electric water pump? They’re more complex than a mechanical pump, hence have more failure mechanisms inherent. They increase the load on the alternator. To my knowledge the flow does not increase with RPM with them, so the flow either has to be maxed out all the time to meet high RPM full throttle conditions, which will draw a lot of current from the alternator continually, or compromised to some average value . Sorry, don’t mean to be a downer, just trying to fathom the advantage on a street machine that has to operate under a wide range of conditions.

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post #3 of 4 (permalink) Old 05-04-2011 Thread Starter
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No problem. Just asking as the mechanical pump is a paracitic drain on overall HP and I want to take the car to the track as well as being a DD.

Later,

Lee Yoder

Redfire Metallic 2006 4.0L V6
JLT CAI, SCT 93 Octane Performance tune, GT Take-off Rear Swaybar, Screamin' Demon Coil, NGK plugs, Borg-Warner cables
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post #4 of 4 (permalink) Old 05-04-2011
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To circulate the water through the cooling system the power must be pulled, whether a mechanical pump does it straight from the belt or whether the alternator pulls it from the belt supplying power to an electric pump. I guess for drag racing the alternator could always be electrically disconnected for a run and just go on the battery (might shave a tiny amount off the quarter mile that way). That would eliminate the loss for the quarter mile, but if you’re talking about any kind of oval track racing the alternator would still need to be hooked up for a race of that kind of duration, and in that case you would still have some losses due to the additional loading on the alternator by the electric water pump.
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