To: bharper@xtdl.com@INTERNET; dakota@csclub0.cs.fredonia.edu@INTERNET
From: Clement_D on Mon, Aug 26, 1996 9:54 AM
Subject: RE: Filter, and Plugs
From: bharper@xtdl.com@INTERNET on Mon, Aug 26, 1996 9:07 AM
>Has anyone used a K&N Filtercharger, and if so, with what results? Mileage?
>Power?
I use Amsoil oiled foam air filters. The same principle as the K&N but more
effective in removing dirt (in my opinion) because there is more twists and
turns for the air to make than in the cotton gauze of a K&N. The reason I
feel this way is from my dirt bike racing days where I would see some dust
accumulation in the air box past the K&N filter that I did not see with the
foam. I do not use them because they increase power, I use them because I
only have to purchase the filter once and clean there after. Also, they
ability to flow air does not degrade like a paper filter because the dirt is
trap through the whole thickness of the filter not just on the surface. In
theory any particle smaller than openings in a paper filter pass through
while there is no restriction on size with an oiled foam or gauze filter.
You may get some power improvement at the top end but I would say it would
be tough to tell anywhere but the track. There was no noticable difference
with them in my Dakota or turbo Daytonas.
>Also, which kinds of premium spark plugs has anyone had good luck with?
>Platnums? Splitfire?
Splitfires are a marketing hype. Any differene in power you see is due to
the fact that the plugs are new (you would get the same difference with any
new plug). You can get the same type of electrode design from either NGK (V
Power) or ND (Hot U) for $1.50 per plug.
I use Autolite Platnium plugs. Again not because I get an increase in power
but because they last a lot longer. I typically replace them at approx 60k
miles and do not see any measurable gap errosion. This is 3 times as long
with only a 50% increase in cost (at least when on sale), just makes good
economic sense to me.
I had some bad experiences with Bosch platniums in my motorcycles because of
the fine wire electrode design. I understand that they have increased the
electrode diameter because of some complaints so I would expect the same
performance as the Autolites. I stick with the Autolites now because they
cane be had for around $1.60 when on sale.
The double platniums cost more and provide no advantage in conventional
ignition systems. The errosion occurs on the center electrode the platnium
resists this. Unless you have a distributorless ignition where there is one
coil for every two plugs there is no advantage to the double platniums. In
this design one plug is attached to each end of the secondary coil wiring
where one plug the center electrode is positive and the other plug the side
electrode is positive, so the errosion occurs from oppisite sides.
Dave Clement
89 4x4 LE
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