Quote:
Originally Posted by 69gmcc10
I would love someone to be able to drop some knowledge on the subject of filtration media and how oiled or dry high performance filters can significantly cut down on surface are and maintain high particulate filtration standards. Also I would like to see a discussion and data on engine life expectancy and how an increase of particulate matter consumed by an engine at various levels effects the engines longevity and long term efficiency. More to the point, with the use of a less restrictive filter in "hopes" to gain fuel and power, what are the long term costs vs any possible benefits of not using a factory filtration unit? And finally if there is truly a filter company and/or media that actually maintains as high or higher particulate filtration as stock and increases air flow within the parameters of the stock air box?
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We have all that; alas - I'm afraid I don't have it at my fingertips and no longer have it all memorized.
It does remind me of a few salient points, though:
a) One of the reasons we went away from the Donaldson round filter and back to a Dephi flat panel for the GMT800 is because we felt it we could achieve comparable filtration with less flow restriction.
b) Also - you gain filtration as the filter gets more "dirty": the particles themselves provide a physical barrier and allow less dirt to pass through.
c) You'll notice we screwed the box lid down with phillips head screws, rather than clips like the previous generation. That was a conscious choice in an attempt to discourage folks from opening up the box for a look. Disrupting the filter can knock loose dirt down into the induction system, which is more damaging than just leaving it alone.
d) Lastly - we did offer a HD filter option RPO K47 for more hostile environments, which consisted of a different media with deeper pleats for more load carrying capability. We also included a restriction gage on the box to provide an indication that the filter needed changing, but for most applications on predominately paved roads the LD filter was intended to last for tens of thousands of miles. K47 was released as optional on the small engines and standard on the larger engines.
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