Hello.

do the these new electric fan induced air intake systems work.

The principle seems that it should.

Snake oil..bit like the oil additives. if they were any good the makers would fit them as standard. Trust Me! Complete crap!

Any worthwhile extra induction pressure without an adjusted ECU is going to bollix your mixture, eventually blow the piston rings (turbo / supercharged engines have a lower compression ratio than an na engine) and probably burn holes in the pistons.. the little power increase the ebay hairdryers provide ain't worth the cost/hassle.

These fans are not even close to making a forced induction. They can't produce enough volume for that. I have seen a lot of discussions about these kind of fans, and everyone says it's bulls*it. Eventually a guy that had mounted this on his Alfa 156 did a dynotest, and the result was suprisingly; it gave an hp-increase. But it didn't matter if the fan was running or not, it was the circulation of air that gave the effect. Trying to find the dynoresults now, will post them if I find them. The effect was very little, but it was an increasement.

I would never install one, as they must be mounted behind the airfilter. I prefer to keep my engine free of plastic pieces from a ruined fan..

I would not put a forced induction unit onto mine however have toyed with the idea of fitting a high speed fan to the engine compartment to draw cool air into the induction pipe while at standstill on hot days.

I have seen it done but cannot remember for the life of me where!

Retro fit the aircon dual fans setup in your B if you want to cool things down faster. Its an easy mod but getting hold of the dual fans is hard as only a few Bs have aircon.

The Volvo 460 had a fan in the Air inlet pipe near the wing, so manufacturers have used these in the past. I think the 460 used a renault engine so renault may have used them as well. It was a very long pipe so not sure if that was why it was there?

LittleRedB said:

I would not put a forced induction unit onto mine however have toyed with the idea of fitting a high speed fan to the engine compartment to draw cool air into the induction pipe while at standstill on hot days.

I have seen it done but cannot remember for the life of me where!

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i tried it on my mk1 punto. a little increase but not worth the effort tbh. built it all for £30 inc impellor, motor, ducting, vent for the front bumper, relay fuses wiring etc. i started off with just some 3" ducting going from the front bumper to the filter box (cut a 3" hole in the filter box and sealed it instead of bottlenecking it at the puntos 1.5" intake pipe.) obviously the idea of having the duct to the front bumper is to has air rushing down it much easily as you drive. then i did some maths and figured out with an impellor an motor installed in the ducting I could produce the same airflow at slow speed as i would get if i was travelling 33mph.

It did improve *very slightly* but not worth the time and hassel tbh. Atleast i know not to bother next time lol

Thanks for the feedback guys,

Guess i wont be going for one of these then.

now, if those kits could as well as compressing, also cool down the intake air to about 7 Celsius...

couldnt someone design a fan to push cold air in ?

maybe an idea for dragons den.

it will take more power than it can give

KC3 said:

maybe an idea for dragons den.

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Hmm, I would not want to be the one presenting that idea, I can hear it now 'so let me get this right KC, you want one hundred thousand pounds to develop a fan for a car that FIAT only ever built 75,000 or, most of which have been smacked into a barrier or a van in the past month' - and you could say 'yup, but the Doc will buy two of them.........'

KC3 said:

couldnt someone design a fan to push cold air in ?

maybe an idea for dragons den.

Click to expand...

turboing with an intercooler then lol

Alan.D said:

The Volvo 460 had a fan in the Air inlet pipe near the wing, so manufacturers have used these in the past. I think the 460 used a renault engine so renault may have used them as well. It was a very long pipe so not sure if that was why it was there?

Click to expand...

In Renault 5 gt they used a fan for the fuel cooling in the carb.
As a principal the electric fan sounds good but it cant push the air in high engine rpms .It also needs alot of electric power that comes from the engine ,so in the end you loose hp.

well, all you need is a rather big air intake in front of a radiator (something like an oil intercooler) , a big barrel of LN2 in the trunk, a wormdrive pump to pumpt the LN2 through the radiator... that should cool the intake air sufficiently

with a setup like this, dont crash with all the LN2... as scenes of terminator 2 spring to mind

What? You thinking about Arnold running around in the nude? What's that got to do with anything?

haha, no more the "liquid metal" Terminator played by Robert Patrick - the scene where the T2000 freezes in the LN2 and Ah-nuld goes "hasta la vista, baby"