Thread: fuel pump selection

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alright thanks.
and im going with electric fans and fuel pump just to get back the little bit of horsepower they take away.

Originally Posted by RedMan16

alright thanks.
and im going with electric fans and fuel pump just to get back the little bit of horsepower they take away.

I'd say you need to refine your calculations and consider all the variables. It really does not matter how the work is done, the energy to do the work is still expended. With electric fans you have increased load on the alternator, plus the questionable performance of the electric fans compared to mechanical. Unless you're dealing with a space problem you're going to be miles ahead sticking with the mechanical fan and factory type shroud. Same with your fuel pump - you're adding complexity by switching to electric (regulator, etc) and the power to drive the motor is still coming from your engine. Someone's sold you some bad information if you believe you're making power by switching to electrics. There's no free energy, period.

thats true to what you are saying but having a 6 blade fan does have wind resitance which makes it harder for the motor to spin it. even a clutch fan gives more power back. im not saying its a whole lot but since the alternator is always there it will just be charging more often and that still isnt as much power loss as the fan and pump put on it.

Originally Posted by RedMan16

thats true to what you are saying but having a 6 blade fan does have wind resitance which makes it harder for the motor to spin it. even a clutch fan gives more power back. im not saying its a whole lot but since the alternator is always there it will just be charging more often and that still isnt as much power loss as the fan and pump put on it.

The alternator is "always there", but if it is not loaded it free wheels. If it's driving your fan & pump, it requires work, which equates to fuel, which balances with the mechanical units. There's no free lunch, regardless. Do yourself a favor and leave the mechanical parts in place.

getting rid of 2 mechanical parts putting a little more amperage on 1 doesnt equal the same amount of power. yes it does take power to turn it but not as much as both mechanical parts. your the only person ive ever heard say its the same. all the forums and magazines i have read say going electric gives you back horsepower and mpg. and all my friends who went electric notice small power differences also.