Printable View
Bummer:(......I have a D2 Td5 and thought I was being smart by ditching the paper filter and fitting a Uni filter just two weeks ago. After now seeing all the info and graphs etc it looks like a radical re-think is in order due to living in a dusty area (Pilbara).
Not now so cheery:confused:
Mick
If you hold a K&N filter up to the light/sun and you can see clearly the thousands of holes, why would anyone think that it could filter particulate matter out of the incoming airstream, you won't find holes in an OEM paper filter, unless it's stuffed, Regards Frank.
Despite this, largely on an empirical basis, air cleaners were extending the life of tractor engines right from the beginning of the century, and by the 1930s had become common in cars and trucks, although as I commented earlier, mostly for noise reduction, at least in the UK.Quote:
Originally Posted by isuzurover
And despite the lack of empirical research, Rover clearly knew what they were doing when they fitted a large, effective aircleaner with a cyclonic precleaner in 1947, right from the start.
John
There are two ways of looking at how efficient an aircleaner is
1. How much does it restrict airflow
2. How much dust does it let through.
If you are after peak performance, 1 might be of interest, although the actual power loss of typical aircleaners is pretty small - most of the improvement from the oiled cloth type ones is the psychological effect of the added engine intake noise.
If you want your engine to last, 2 is the factor you will be interested in, and there is no doubt that modern paper element filters (with, as suggested, a cyclonic precleaner, and preferably a guard element) are far more effective and have added greatly to engine life of vehicles.
John
Thanks David,Quote:
Originally Posted by spudboy
Now THIS is more like it!! Discovery-S2-V8-Filter-Set.
Oil and air filters for a mere $60 inc postage.
Cheers for the initial link, bud! :D
..:: KIEREN ::..
2000 Disco II Auto V8
Object Of Mass Consumption
AussieAubs Disco Page
Way too expensive!! :oQuote:
Originally Posted by AussieAub
D2 V8 Coopers filter is $15 from British Parts! :D
In the filter world, FILTER EFFICIENCY purely means the proportion of particles which will be collected by a filter (either on a mass basis or a number basis). Penetration is also used which is 1-efficiency.Quote:
Originally Posted by JDNSW
Pressure drop / Restriction (i.e. how easily air flows through the filter) is accounted for by using a metric called filter "Quality factor" - the ratio between pressure drop and efficiency.
In reality thouugh, for modern filters, the vehicle manufacturer specifies the efficiency, and the the "package" size (space available), and the filter manufacturer designs something which will fit with the lowest pressure drop possible for the given efficiency.
just picked up a k and n airfilter form auto barn and worked out a 16% power increse from my old filter (ryco) i used the dynolicus off my ipod. it seems to be repeatibul they were good quality and have a 1 milion mile warenty, 130 for the filter, comes pre oiled and the recharge oil kit is 27 bucks, . good value i reccon.
They have a 1 million mile warranty on the filter. All that says is that the filter will last 1 million miles when cleaned in the proper way at the specified interval.Quote:
Originally Posted by discoveryseries1
If you look up their warranty conditions, you will note:
Therir warranty is for vehicles...
when used primarily on paved roads
WHAT IS NOT COVERED BY OUR WARRANTY
Any K&N product used for ... 2: any off-road use...
I won't bother to comment on the accuracy of a $13 dyno and a sample size of 1 with no test conditions listed.
As the end of the day, it is your engine and your money... But the cost of an engine rebuild will buy a lot of beer and hookers.
Can't see how you can improve performance by 16% by just changing your air filter, unless the old one was unbelievably shagged.Quote:
Originally Posted by discoveryseries1
You might have got 15% improvement just by putting on a new Ryco.....