if u were able to get the filter closer to the fan i might work a bit better, but then series has the cowling round it dunt it.... the perkins just has a finger removing uncowled contraption flailing around the front of the engine!!

doobie said:

if u were able to get the filter closer to the fan i might work a bit better, but then series has the cowling round it dunt it.... the perkins just has a finger removing uncowled contraption flailing around the front of the engine!!

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Quite rare that I have ever seen a Fan cowling fitted, None of mine nor my mates Series 2-3s have them fitted..

None of the above pics are forced induction surely? Just an open filter - for it to be forced induction you would need something that forces air to it...unless the fan acts as forced air - which could be warm air anyway?

I know K&N are renowned for being good for keeping crap out but I would much rather have an enclosed filter on a landy. At the minute my 2A has a bastardised pipe made mainly out of black tape (previous owner). What I am going for is a Range Rover airbox (well, doesn't really matter what airbox it is, just that I probably have one kicking about somewhere) with a K&N replacement panel filter...with home-made snorkel attached to the airbox. It will give it plenty to breathe but keep the rubbish out

No mate, they are not, for a forced induction you fit a scoop on the bonnet or wing which blows cold air directly into the K&N.. Well there are a few ways.

Although 2.25 petrols carburetters can freeze up very easily in cold temperatures when you have a K&N fitted so I guess that set up of mine would be best as it gets warm in the engine bay so your not drawing Icey air in and freezing the carb?. I had the problem on my Chopper that with the K&N it would run terrible in the cold evening over prolonged use and the carb would appeared to be frosted over!

Yup, open filters on carbs are well known for freezing up. You can get warmer kits if I remember correctly!

i was talking to a scientist today. i asked what would the effect be of a kenlow fan being used to blow air direct into the inlet manifold on a diesel or carb on a petrol. would it act like a poor mans supercharger? forced air inlet?
how many cfm will the fan shift, what cfm of air is needed at pesent? what energy is needed to drive the fan?
Any one out there know what i am on about or have you tried it????????

I don't have any experience from it, but I wouldn't say it would have anywhere enough force to create a difference in power

ciderman said:

i was talking to a scientist today. i asked what would the effect be of a kenlow fan being used to blow air direct into the inlet manifold on a diesel or carb on a petrol. would it act like a poor mans supercharger? forced air inlet?
how many cfm will the fan shift, what cfm of air is needed at pesent? what energy is needed to drive the fan?
Any one out there know what i am on about or have you tried it????????

Click to expand...

No... it will be rubbish for two reasons.

Firstly it will act as a restriction in the intake as the peak flow of the fan will be considerably less than the peak flow required by the engine.

Secondly, if you power the fan from the battery, there's an additional load on the alternator and in turn on the engine causing it to be less efficient than it would have been otherwise. As this additional load will, very slightly, exceed the amount of power drawn by the fan (as recharging the battery isn't 100% efficient) and therefore the energy available to the fan to push air into the intake, even if the fan were capable of pushing in a beneficial amount of air, as it's electric, the losses from recharging the battery far exceed the gains from having the fan there at all.

A friend of mine has a 6.8 litre V8 trike... in order to keep the power down to a sensible level and the front end on the ground more often than not, he fitted a supercharger from a BMW Mini Cooper 'S' - I can't remember the exact figures, but essentially the peak flow of the BMW supercharger was about 2/3rds of that required by the hooje V8 in the trike at anything over about half throttle