Hi I just want to know,if I take my macanical fan of and put a electric fan on, can I gain some more hp and kw???

Yes

Alot more or not?

Hi! whell, you may get more our less 1 hp our 2hp, plus, you

I'd recommend the electric fan if you're up to the fabrication, you'll need to make a new shroud, add a thermal switch and relay.

Not having the regular fan frees up a little power.

not sure if anyone already knows this
i am a bit of an ET pulsar afficionado and they have a really cool thermo fan switch
screws into the radiator directly and has two terminals but does not need a relay
power to it then to the fan then earth the fan!! how neat is that, well i find it cool!
they are switched at 90 degrees and cost about 30 dollars new.

ben

I use one of those thermal switches, actually, my radiator has the bung added for the switch the fwd sunnys use, but because the fan i use pulls 30 amps i have a relay to make the switch last longer.Otherwise the switches get unreliable after a year or so.

That's why mine is wired directly to the ign. switch!!!!as soon as I turn the switch on the fan is runnin

Running an electric fan is not entirely 'free' although there are times when would come close.
At low road speeds, the fan draws its highest current flow & this current must come from somewhere. This would be from the altenator which is engine driven. The higher the electrical load, the higher the load on the engine to make it happen.

As road speed rises, the airflow takes a lot of load off the fan & as a result, the engine also receives the benefit of this reduced load, but so too would an engine with a regular fan for the same reason.

An electric fan most definately has a lot to offer, but please don't think that it is just totally 'free' horsepower as anything that draws electrical power, even uprated headlights, needs some engine power to support it.
At any time when the temp is below the thermo switch's preset value, the fan is off & draws no current. Thats when it's free power.

Wise words there Dodgeman. I was thinking about puting an electric fan in my 120y but for now I don't mind the little four blader thats on there. But another alternative is one of those fans with the bearings in them so they free up some load when you're reving harder. I have an old vanette (think its a c20?) with it bolted on the front of the A15