Alright, supposedly my stock 1600cc makes about 103Hp, a mate told me that quite a bit of horsepower is taken up by the belt driven water pump and that installing a battery operated pump could spare me a few more horses! what do you felers reckon about this?
I would consider it on a race car, with a worked engine, as you would spend alot of time very high in the revs. (And an electric pump system is better at cooling).
But on the street its not work the hassle, and unless you've already done alot of work to your engine you shouldn't even be thinking about it.
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Well it's not gonna hurt the hp rating by getting rid of things like power steering, a/c and the water pump. But it's not gonna give you as much power as if you were driving a v8.
It's like on a rwd it helps to put an electric fan
Get rid of your power steering and brakes dude.. who needs them when you can tie ropes to the wheels to control the turning, and just do what Fred Flinstone does to brake... that should give you the whole 2hp you're losing.
I would consider it on a race car, with a worked engine, as you would spend alot of time very high in the revs. (And an electric pump system is better at cooling).
But on the street its not work the hassle, and unless you've already done alot of work to your engine you shouldn't even be thinking about it.
How is it better at cooling?
An electric water pump, pumps the same amount it does at 1000rpm as it does at 5800 rpm, but a mechanical pump will flow more or less depending on the rpms.
An electric water pump, pumps the same amount it does at 1000rpm as it does at 5800 rpm, but a mechanical pump will flow more or less depending on the rpms.
Quote:
Originally Posted by Flashmn
problem with mechanical pumps is that they cavitate on high rpm.
Bingo!
That and the fact that at high RPM race applications, the water is flowing so fast that it doesn't spend enough time in the radiator to cool down, Causing overheating.
Also an electric pump can regulate the temp better, most electric setups I've seen don't run a thermostat, they just use the pump to regulate the temp.
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the whole belt driven stuff takes up about 10hp or around there.... put a exhaust and intake on it will give u same result...
D
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the whole belt driven stuff takes up about 10hp or around there.... put a exhaust and intake on it will give u same result...
D
Debatable, for the XRS I would believe that adding an intake and exhaust would yield 10hp or more but not on his Corolla. The belt driven accessories do cause parasitic loss but at the expense of the things that makes the drive more convenient (ie P/S, A/C etc). Its a good way to squeeze out as much power as possible but there will be a tradeoff.
I wouldnt bother removing the powersteering, A/C doesnt cause practically any drag when the magnetic clutch is disengaged. Even modern race cars have powersteering.
I wouldnt bother removing the powersteering, A/C doesnt cause practically any drag when the magnetic clutch is disengaged. Even modern race cars have powersteering.
Only because the people who could afford them don't want to deal without the ammenaties that makes the drive easier. Pansies
The electric motor for the water pump will need power from some place, this being the alternator that is driven by the engine.
Might save some energy if the electric motor is very efficient and can vary its RPM to meet the coolant flow requirements more accurately then a belt driven pump. And thus require less overall energy.
tangerine, not really... with extreme caster angle, your streeting gets so hard that without powersteering its close to painful to turn the car. Then again with those caster angles you can get the car to steer alot faster.
Check out rally cars, alot of them have powersteering already.
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