If your that picky about how much a belt spinning a fan is going to reduce power output, might want to remove your alternator too, and just chage your battery of a night :)
As for the fan turbo idea, someone was selling an electric one on the net recently... runing low boost and 5% power gain I think.... Dont waste your time is my opionon. Taking warm air from behind the radiator would be fairly pointless. A quick and easy mod which you could do if you've got some spare pipe... is to make a cold air intake, try and take air from a place with good flow. You should get a noticable difference particularly in the colder months... ----- Original Message ----- From: Bob <[EMAIL PROTECTED]> Date: Friday, March 28, 2003 11:19 pm Subject: Re: carburettor and induction questions > 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 > thereto 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 > gainusing 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]/ > ------------------------------------------------------------------- > -- > --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]/ ---------------------------------------------------------------------
