Does anybody know if anyone is selling a electric fan kit for the G35 Sedan?

 

what would an electric fan do for teh G35?

 

The mechanical clutch fan we have now robs a slight amount of power, as it's driven directly by the crankshaft. An electric fan is powered by it's own electric motor. So, it would be one less accessory that your engine has to power.


2003.5 G35 Sedan Desert Platinum/Graphite Premium/Sport/Aero/Nav/Winter

 

Will the coupe's fan fit? I would buy it if it did fit.

Limited Edition Twilight Blue / Premium / Graphite / Xenons

 

Hey ryoken! Congrats on making Pooh-Bah! Today right?[img]/w3timages/icons/smile.gif[/img]

<font color=green>GG</font color=green>

 

8:46am PDT, but who's counting? [img]/w3timages/icons/smile.gif[/img]

2003.5 G35 Sedan Desert Platinum/Graphite Premium/Sport/Aero/Nav/Winter

 

ehhehehe congratz ryo!

 

<blockquote><font class="small">In reply to:</font><hr>

An electric fan is powered by it's own electric motor. So, it would be one less accessory that your engine has to power.

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How does this work? I don't see how switching from a mechanical system to an electrical system would provide any power savings, all things being equal. The alternator is driven by the crankshaft as well isn't it?

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6MT Sedan, Brilliant Silver, Aero/Premium/Winter

 

The factory clutch fan has a viscous fluid that is RPM and temperature sensitive. The fan draws more power away from the engine at low speed and less power at high RPM (The fan is mostly needed in stop-and-go traffic and not highway speeds). Since the fan is directly attached to the engine, the engine is mechanically turning the fan, horsepower is then lost through this “parasitic loss” process. Installing an aftermarket fan and thermostat from one of these reputable companies like: Hayden, SPA, and Perma-cool…, could yield 1-5 HP (mostly at lower RPM’s), but you would run the risk of voiding your warranty or over-heating the engine if an inefficient aftermarket electric fan was installed! Caution! Electric fans are produced with different pull/push and air-flow characteristics! You could accomplish more by installing under-drive engine accessory pulleys. Just my 2 cents.

 

<blockquote><font class="small">In reply to:</font><hr>

How does this work? I don't see how switching from a mechanical system to an electrical system would provide any power savings, all things being equal. The alternator is driven by the crankshaft as well isn't it?

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The alternator is always being driven by the crankshaft, and most of the time is generating more current than is necessary to keep the battery charged and operate the car's electrical systems. Adding one or two electric-powered accessories wouldn't have much of an effect on the overall electrical system.

Of course, putting in an electric fan isn't something I'd do during the warranty period. And if you plan on going to a forced-induction system, then the couple of HPs the fan draws becomes a moot point.

2003.5 G35 Sedan Desert Platinum/Graphite Premium/Sport/Aero/Nav/Winter

 

<blockquote><font class="small">In reply to:</font><hr>

Adding one or two electric-powered accessories wouldn't have much of an effect on the overall electrical system.

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Actually, it will have a direct effect. The the amount of additional power taken from the engine will be equal to the power required by the device (volts*amps) + the efficiency loss of the alternator (small) + the pulley/belt mechanical loss (small).

Unless the present mechanical drive system is really inefficient, I don't think anyone will see a difference with the electric fan (except when it's turned off of course!).

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6MT Sedan, Brilliant Silver, Aero/Premium/Winter