Air Filters

[SPGTi 2]

Not a subject I ever thought I would post about ..............

 

Anyway, last month, blasting around Sweet Lamb in some serious dust, unsurprisingly my air filter cogged up really bad. It is a K+N that is always cleaned and oiled (using their products). During a break I took it off and tried to tap out some of the dust, but the oil was doing its job and the dust just stuck in there. In hindsight I should have taken my spare, but didn't.

 

So the question is what is the best type of filter to use, which would minimise the clogging but offer good filtration ? I presume all the cotton gauze type would be the same as the K+N, but how do the foam ones act ? Are there any other type worth looking at ? I don't have the std airbox setup so would be looking for a cone type.

 

cheers

 

Steve

[M_R_205 5 1 Cars]

i used to use a piper cross one that i just hooverd out every now and then i occasionlay rinsed it out will water too never gave me any trouble,

 

its similar to this one

 

http://cgi.ebay.co.uk/piper-Cross-vector-a...1QQcmdZViewItem

Edited July 11, 2007 by M_R_205

[DamirGTI 327]

Hi !

 

Some reference about air filters that I've found here few years ago tested on 205 1.9 GTi engine :

 

Standard Peugeot filter

Efficiency: 43%

Capacity: more than 100g

Pressure Drop: 160mm of water at 250cfm

 

Verdict:

the oe filter is a foam device. lasted to the end of the dust test, partly

because it filtered barely 40% of the dust from the air intake. very

restrictive.

 

GMR (foam)

Efficiency: 85.2%

Capacity: more than 259g

Pressure Drop: 141mm of water at 250cfm

 

Verdict:

A foam filter, low pressure drop results and high efficiency for a foam

filter promise good performance in use.

 

ITG (foam)

Efficiency: 67.5%

Capacity: more than 188g

Pressure Drop: 156mm of water at 250cfm

 

Verdict:

disappointing

 

JAMEX (foam)

Efficiency: 72.7 %

Capacity: more than 186g

Pressure Drop: 156mm of water at 250cfm

 

Verdict:

didn't show the greatest efficiency, but pressure drop figures were

competitive.

 

JETEX (cotton gauze)

Efficiency: 94.1

Capacity: 62g

Pressure Drop: 153mm of water at 250cfm

 

Verdict:

very high efficiency figures, but a much lower capacity. pressure drop

results are in the middle of this group.

 

JR (cotton gauze)

Efficiency: 95.5%

Capacity: 52g

Pressure Drop: 144mm of water at 250cfm

 

Verdict:

high efficiency, but low capacity. Pressure drop results were OK

 

K&N (gauze)

Efficiency: 95.7%

Capacity: 115g

Pressure Drop: 134mm of water at 250cfm

 

Verdict:

Gave the highest efficiency, with the lowest pressure drop figures. Should

be good for performance and engine life. The drawback is a low capacity

compared to foam filters - it will need to be cleaned more often.

 

RAMAIR (foam)

Efficiency: 86.5%

Capacity: more than 207g

Pressure Drop: 166 mm of water at 250cfm

 

Verdict:

expensive, marginally the best efficiency of the foam filters, but produced

high pressure drop readings.

 

 

 

Their results showed, that if you're after the ultimate if filtration

efficiency, you ought to go for a cotton gauze filter (K&N). If you're

content with a lower level of efficiency, but you'd feel happier knowing

the filter could last longer without attention, you're better off with a

foam filter.

 

 

Hope this helps

Damir

[SPGTi 2]

Thanks Damir,

 

Very helpful. Looks like I will stick with the K+N and keep a couple of spares for if it gets really dusty again.

 

 

cheers

 

Steve

[welshpug 1,626]

how about using the original airbox?

[SPGTi 2]

how about using the original airbox?

 

As I said in the first post, I dont have the original setup.

 

Anyone any thoughts on the HAlford own brand cotton gauze filters ? Only £26 ! Just maybe a bit worried on the filtration side of things.

 

Steve