Ferrari Mailing List: Re: NFC BMW 740

[Jim Conforti (lndshrk]

At 02:57 AM 1/26/2007 -0500, LtWacko [at] aol.com wrote:

The best  filtration write up I had read came from Jim C
> while testing applications on an  E36 M3 (If memory serves me).

  We were testing filters FOR an application on an E36 M3.

  Essentially it was what was found out and why we stopped
  using any form of "oiled-cotton-gauze" filter - regardless
  of any 1E6 mile warranties - that matters.

  Those type of filters, while they might flow better when
  completely clean vs a STOCK PAPER FILTER, they have much
  less filter media area, and thus they "clog" much quicker
  and soon flow LESS than a STOCK PAPER FILTER.

  Meanwhile they always let thru a bunch more dirt.

  This isn't my opinion, nor a test done by another filter maker
  with an axe to grind as is oft opined.  This is the scientific
  data from a professional filtration lab located in the N.E. US
  who has one of it's markets as NUCLEAR POWER STATIONS.

  Filters to remove dangerous nuclides from coolant loops.

  So you might guess they know what they are talking about.

  They did me a BIG favor and for employment reasons the actual
  company must remain undisclosed.

  The intakes I invented, and then co-developed w/ Eurosport
  were specifically designed to deal with those issues along
  with others more specific to BMW-land.

  Executive summary: YMMV, but IMNSHO skip the oiled-gauze filters.

  Jim