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MG MGF Technical - Cool Air Induction Kit **

Have resisted with parting with over 60 of my hard earned money to buy the moss cool air induction kit.As I heard all it is is a piece of flexible hose and a bracket .
Can anyone help so I can do a DIY if possible have approx 1 metre of aluminuim foil hose and clips are these suitable I intend to use the left hand air intake or underneath of the car.
Can the original hose be extended and mounted at the rear?
How long does the new hose have to be?
T.i.a.
Rich.
Rich

Sorry .. Also can the new hose be put straight into the filter box instead of the resonator?
Richard March

Using a Roger Parker idea, i removed the original pipe and routed it from the LHS air intake directly into the filter box (and fitted a K&N panel filter). Now sounds better, pulls better and revs better
Paul

Lots more info on this subject in the archive Rich
Paul

Rich,

I've added loads of postings on this subject and recently under 'High flow filter' i tried out a variation. I am quite happy with this setup. The Manufactured pipe may be a bit expensive but its tough and durable and comes with a neat bracket to mount it onto the intake grille fixings.

Nick
Nick

What exactly is the function of the resonator and why is it okay to completely by pass it to the filter box.
Also is it easy to remove completely if it is safe to do so.
Thanks in advance.
Rich..#

I personally left the box in place,and bypassin it. though it is easy enough to take out with the wheel removed. All it's function is, is to dampen out the pulses of air entering into the engine. I think i'm right in saying that it's purpose therefore is to keep the intake quite, a bit like a silencer on an exhaust. But then we don't want to hush up our intake do we?

Nick
Nick

>But then we don't want to hush up our intake do we?

Which is no doubt one of the most common reasons for fitting a K&N 57i kit - at least it was in my case, I wanted it more for the sound improvement than the performance gain. :)

http://www.dotcomoff.demon.co.uk

Home of the F'ers Gallery and MG Dealer Guide :)
Paul Lathwell

>>I personally left the box in place,and bypassin it. though it is easy enough to take out with the wheel removed. All it's function is, is to dampen out the pulses of air entering into the engine. I think i'm right in saying that it's purpose therefore is to keep the intake quite, a bit like a silencer on an exhaust. But then we don't want to hush up our intake do we?<<

Nick, this was the point I was trying to make with the posting on the High-flow thread- the reasonance chamber is there to even out air pressure (a bit like a capacitor in an electrical circuit). This has a two fold effect- first, it quietens the intake roar and secondly it'll mean that the air being drawn into the engine will be at 'constant' pressure- a real advantage for power production. The problem with the standard air intake set up is the volume of air that it can provide the engine I think: at very high rpm there simply isn't enough air flowing into the air box, which would drop the intake pressure and limit top end power. Increase this supply of air as you and I have done- and bingo, more top-end power.

If you can increase the amount of air entering the inlet, then you'll recieve a benefit. If this air is also relatively cold, then even more of a benefit will be realised.

Rob
Rob Bell

Rob,

O.K, so do you think that the standard resonance chamber will be large enough to do the job, if coupled to a scoop at one end and the filter airbox at the other? Or will we have to look at another method. Mind you there isn't much room for anything else.

Nick
Nick

I would not be surprised that Rover engineers themselves wanted a larger box but were knobbled by space. These recent discussions have heightened my respect for what the engineers have achieved in the confines of the space and the need to use standardised parts.

WRT using the standard resonance box, I think it would be worth a go- but how difficult would it be to clear the inside of the 'box when it envitably fills up with debris? If a ram air arrangement were used, the air pressure entering the system will be fluctuating significantly (and hence the noise)- so would it need baffles? Do not know, so some experiments are needed.

Ultimately, I would prefer to build a custom 'box, where all the ducts were straight and of large diameter to feed the filter with as much air as it needs. But what material to make it out of?

Rob
Rob Bell

I wonder if anyone out there has got an old resonance chamber no longer being used that we can open up and figure out it's internal arrangements?. It's only a bit of plastic so it may even be worth buying one to open up??

The problem of debris could be overcome by making a large hole in the bottom and fitting a bung. Or removing the hoses and blasting it clear with compressed air.

Nick
Nick

Good idea.

Hasn't B&G got some junked MGFs? Surely they'll not want much for the res' box?

Rob
Rob Bell

This thread was discussed between 07/06/2000 and 09/06/2000

MG MGF Technical index

This thread is from the archive. The Live MG MGF Technical BBS is active now.