I just replaced my eBay intake with an Injen one, but I kept my Weapon R filter (saved $30 that way). I'm just wondering if that was a good idea? Which filter is better between the Weapon R and the Injen one? TIA

 

 

I'd stick a proven brand like K&N.

Even tho I have never used a Weapon R filter, I have NEVER heard anything good about any Weapon R product. just my .02

 

Thanks. Would you go with the K&N over the Injen one that comes with the intake?

The Weapon R one is actually made out of foam, rather than the K&N style layered cotton fabric.




Modified by T_Rex at 11:10 AM 5/6/2003

 

That is up to you I guess, I havn't heard anything, good or bad, about Injen.

 

foam is supposed to be higher flow, and as long as you oil it, it's fine.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by elecT &raquo;</TD></TR><TR><TD CLASS="quote">foam is supposed to be higher flow, and as long as you oil it, it's fine.
</TD></TR></TABLE>

That's what I thought too, but a lot of people on this board have said it's the other way around. Anyone know for sure?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Buzzbomb &raquo;</TD></TR><TR><TD CLASS="quote">I'd stick a proven brand like K&N.</TD></TR></TABLE>

 

I'm 90% sure foam flows better than cotton, however I do not think that it filters as good.

I'd like to try Accel's Kool Blue filter, that seems like a quality product. They advertise that it filters smaller particles than traditional cotton filters.

 

I wouldn't trust any product by a company with a name like Weapon R.

 

Here's what it says on their site:

Pleated Gauze or Fabric Filtration
This is another screen type that is only 1mm thick. If the dirt is not stopped on the surface,
it is not stopped at all. These filters are sold on the pretense that they maintain an oil curtain
for the air to pass through, thereby catching all dirt particles. It is impossible to maintain an
oil curtain. The oil soaks the threads of the gauze or cloth, but does not span the openings;
otherwise, the air could not get through. The dirt particles that do hit the threads have a good
chance of being caught; the others simply go through. The reason the filter does not look dirty
on the inside is because the dirt went into the engine. You can easily demonstrate this fact
yourself by coating the inside of your housing or carb throat with a thin layer of grease to
trap some of the dirt not caught by the filter or you can place a foam filter inside the gauze
element to prove the same thing.
The one advantage that this type of element has over paper is greatly reduced airflow restriction;
however, poor filtration efficiency is the price you pay. When dirt builds up, filtering action
improves, but now the airflow is poor like paper elements.

Open Cell Filter Foam
The development of this special foam represented a major advancement in air filtration technology.
Foam air filters now combine great airflow capability, huge dust holding capacity, and very high
filtration efficiency for extremely small particles.
Fully reticulated (open pore) foam is a honeycomb of tiny, interlocking cells of uniform size,
which create an impossible journey for dirt particles since there are no straight-through passageways.
Each passageway (16 to 25mm long) is like hundreds of very small centrifugal/oil bath filters connected
one to another. In this way, foam traps and holds the particles throughout the entire volume of foam.
This is why they are referred to as "full depth" filters in contrast to the paper or gauze elements,
which are screens, or "surface type" filters. The cell strands stop the dirt, while the oil film
holds the dirt like fly paper until removed for cleaning.

WHY IS FOAM BETTER?
The principle of how foam air filters work is simple: "Open Cell" Polyurethane Foam is wetted with
specially developed filter oil. The "sticky" filter oil is suspended in the path of the dirty air
on the strands of the web-like cell structure of the foam. This makes it impossible for dirt to
pass through the depth of the filter without sticking to the strands. As the outer strands become
loaded with dirt particles, the wetted strands down stream start trapping dirt, allowing the entire
thickness to be utilized. This prevents surface loading or air restriction for 80% of the service life
of the air filter element. When the filter is sufficiently dirty, it can be easily washed, re-oiled,
and re-used.