I would imagine that if you could build any boost at all with the fan idea, it wouldntbe enough to offset cost and weight gain. While fans move a lot of air, they dont build much pressure - if you think of a leaf blower it generates a fair gust of air, but when you stick your hand over the end it really doesnt produce much pressure.
Air should blow back from the fan towards the engine - the fan is there to suck air in from the front of the car. As for the electric fan idea, if you wired the fan up to run continuously you might get an economy gain, or an economy loss - when you are using an electric fan the power has to be generated from the alternator which isnt 100% efficient, and then by the fan motor which isnt 100% efficient and so it might take more total energy to generate that volume of air movement than it would with just the engine fan. Wired up with a thermostatic controller you would almost definately have an efficiency gain, as in reality for most of the time you dont need a radiator fan. As for a power gain, I believe you would get a power gain using a thermostatic controller or not. On Thu, 2003-03-27 at 23:07, Ian Fagg wrote: > Sorry to waste your time on these questions... I'd normally ask the forum for > something this trivial but it's down at the moment so I can't. > > Firstly, looking from the front of the car (I have a stock stanza - L16, standard > carby) is the primary throttle on the right or the left? I'm presuming its on the > right as that one has no butterfly choke in the throat. > > Secondly, and I'm hypothesising a lot here, if I were to extend the intake duct > coming into the air filter so that it had a rather large opening situated just > behind the engine fan, would there be any kind of turbo effect, and would there be > any noticeable increase in power? That'd be cheaper than a turbo :-) > > Thirdly, if there would be any increase in power from the setup in my second > question, would it be greater than the increase in power from removing the > belt-driven fan and replacing it with an electric one? > > Fourthly, and following on from the fan idea, should there be air blowing back from > the fan towards the engine at all? Shouldn't the air from the fan blow onto the > radiator? Or does it just spin so fast that some air just gets pushed backwards? > That last point doesn't work with the laws of physics, but then some datsuns seem to > break those anyways ;-) jk > > That's all the questions I can think of at the moment :-) > > _____________________________________________________________ > Get Your free Ozdat Email Account > ---> http://www.ozdat.com > > _____________________________________________________________ > Select your own custom email address for FREE! Get [EMAIL PROTECTED] w/No Ads, 6MB, > POP & more! http://www.everyone.net/selectmail?campaign=tag > -- Bob <[EMAIL PROTECTED]> --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[EMAIL PROTECTED]/ ---------------------------------------------------------------------
