Foam air filter
Turbo Mini Forums

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=496805

NKS one here... not sure if the guys still around to ask if it was any good

I've got one of the apexi ones waiting to go on mine after reading that article a couple years ago!

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

What did you do regarding the neck that bolts to it? Because the smallest one they do is still rather large for something like a T3, a silicone reducer or a home made neck?

We were told this by David Vizard & this was confirmed by the K&N rep that was there to.

Phil.

WWW.TURBO-MINI.COM

I have a cunning plan...

Involves a custom air box above the wheel with baffles and a big flat papor elemt or two

thats my plan, but with a bmw paper cone as you would find in a 530d for example.. easier to make a box for

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.

So where does K&N list this option ? You'd think if available, it would be glaringly obvious on it's website ?

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

ill be going for the most surface area i can get in paper that will still fit under the wheel arch the baffles will be to equalize the flow over the whole element rather than taking the easiest route should make it filter better as not to be forced threw but to ease its way threw

the bit im sort of stuck with is getting dry dirt free air into the box from the wheel arch ie so it can be driven on un sealed roads and not suck up a bunch of dirt n rocks im thinking a cyclonic type deal like bag less vacuum cleaners?

I just routed the box down to the front air intake normally used for the side vent inside the car.

Pretty sure that's what ERA did too.

I wouldnt worry about baffles. Air will naturally find it's own easy path through the filter, and as the filter gets dirty that will change anyway.

The Peugeot airbox for the filter posted above might actually fit in the arch too. Would be tight though.

Is using small wheels probably ok, 13"...maybe a bit harder.

I'd say you're also overthinking about physical size you might need.

I know this is an extreme comparison, but a WRC car can make 350hp whilst sucking through a 32mm restrictor.
That's a pretty damn small hole to have to draw air through.

So even if your inlet tubing dropped to say 50-55mm...I cant see it causing any real restriction even at 300hp, which few Mini A-series will ever make.

Edited by stevieturbo on 31st May, 2014.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

a bit more reading si

http://www.skylineowners.com/forum/showthread.php?t=214527

Yes i moved to the darkside

Instagram @jdm_brett

yup ERA routed it to air intake

TBH if you have the room and need filtration, paper is the only option.

ie if using an ERA airbox, the paper element is more than enough for virtually any A-series.

I've a couple of foam Greddy filters on my turbos..and the turbos are low mounted so in a bad spot for clean air...at least in terms of wet roads.

There is always visible discolouration inside the turbos and boost pipes when I remove them. Like a rusty colour strangely.
I just have no room at all for anything else unless I build a very complicated pipe system for remote mount filters.

K&N's...hit or miss really. I guess they must filter some stuff out, but they really really seem to get loaded with dirt very fast too for some reason.

As for the layering..I dont easily see any mention of this on their site other than it says they use between 4-6 layers. It doesnt seem to say which filters do and why ?

Presumably larger filters may use more, could be for more rigidity or something ? I can't find where it sates why ?

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

why are foam (oiled) filters used on dirt bikes that blast around in the dust and dirt?

i was dead agains foam filters but after seeing how well they do on my dirt bike when the whole bike and air box has a layer of dust in the bottom but the other side of the filter is as clean as it was when installed i think foam works when used correctly the only thing is the cleaning that needs to be done really regular

for the road i think goos paopr is the way and the more filter area the better to a point

No doubt there are great differences between various brands of foam filter, and I'm sure the more they're oiled the more they will filter.

I just know the Greddy ones I'm using dont seem to filter very well. But they'll definitely be better than nothing or a mesh screen

I had a couple of Ramair filters that would fit too...but they're half the size of the Greddy, and the Greddy are far too tiny.

Problem with most filter tests ( although havent seen any inn recent years ) most tend to be sponsored so results arent always as honest as they could be.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will