X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sat, 18 Jan 2014 19:29:47 -0500 Message-ID: X-Original-Return-Path: Received: from mail-qe0-f53.google.com ([209.85.128.53] verified) by logan.com (CommuniGate Pro SMTP 6.0.8) with ESMTPS id 6693071 for lml@lancaironline.net; Sat, 18 Jan 2014 17:00:16 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.128.53; envelope-from=macinsd@gmail.com Received: by mail-qe0-f53.google.com with SMTP id s1so550592qeb.40 for ; Sat, 18 Jan 2014 13:59:40 -0800 (PST) MIME-Version: 1.0 X-Received: by 10.140.92.54 with SMTP id a51mr14674690qge.111.1390082380829; Sat, 18 Jan 2014 13:59:40 -0800 (PST) Received: by 10.97.1.202 with HTTP; Sat, 18 Jan 2014 13:59:40 -0800 (PST) In-Reply-To: References: X-Original-Date: Sat, 18 Jan 2014 13:59:40 -0800 X-Original-Message-ID: Subject: Re: [LML] K&N air filters From: Bill MacLeod X-Original-To: Lancair Mailing List Content-Type: multipart/alternative; boundary=001a113ab97a84c52c04f045c6e6 --001a113ab97a84c52c04f045c6e6 Content-Type: text/plain; charset=ISO-8859-1 Steve, The previous owner is in Florida with his new Evolution (some guys have a really good life :-) ), but thinks they have the part number back in Ohio and will let me know when they get back. So, that may work. I just thought I could save the time of trying to match it up by having the part number. I think you could easily, and very accurately, compare a paper/cellulose filter to your K&N. First, carefully observe manifold pressure and rpm obtained with the K&N, then see what the results are with a good quality paper filter (same runway, temperature, barometric pressure, etc., of course). If the mp & rpm are no lower, the K&N is giving you no more performance. Hopefully you are already doing oil analysis (OA) on your engine and will have pretty good baseline numbers established. So, next, compare the silicon (dirt) and wear metals (aluminum, chromium, iron, copper, etc.) over the next couple of oil changes. I'll bet you will start to see a decline in both dirt and metal with the first oil change (using a paper air filter) and will continue to see a decline over the next couple of changes until things stabilize at a lower level. Doing the above will take all the conjecture, opinion, etc., out of the filter question. I can really only deal with hard data. In case you're not already doing OA, here's a link to a sample aircraft OA. Put your computer pointer over any of the elements and it will give an explanation of them and from which parts the metal could be coming. Actually, the pointer over any of the blue highlighted areas will bring up explanations. http://www.blackstone-labs.com/report-explanation.php Hope this is helpful to anybody not familiar with oil analysis. Blackstone does not charge for the sample kits and only charges when an analysis is done--$25 each or, as I do, pay for 6 at a time and it's only $20 each. I would also highly recommend using their vacuum pump to pull the sample through the dipstick tube. Allows one to pull samples without draining the oil. Makes it very neat, clean and quick. I will sometimes pull a sample in the middle or last third of an oil change interval just to monitor what is happening with the engine. The vacuum pump makes this a clean 5 minute job. I use it even (before) when I am draining the oil. Bill On Sat, Jan 18, 2014 at 11:42 AM, Steve Colwell wrote: > > > Take the old filter with you. They can probably match it. Does the > previous owner know the part number? > > > > Bill > > > > If the Auto Parts Store asks what it is off of; tell them it is a custom > made, three wheel, off road vehicle. I doubted the filtering efficiency > when I could see daylight thru the K&N. We used to call them rock > strainers on Hot Rods. I would like to compare a paper media filter with > the K&N I fitted to the IO-550N in our Legacy. > > > > Steve Colwell > > > > > --001a113ab97a84c52c04f045c6e6 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
Steve,

The previous owner is in Florida with = his new Evolution (some guys have a really good life :-) ), but thinks they= have the part number back in Ohio and will let me know when they get back.= =A0So, that may work.

I just thought I could save the time of trying to match= it up by having the part number.

I think yo= u could easily, and very accurately, compare a paper/cellulose filter to yo= ur K&N.
First, carefully observe manifold pressure and rpm obtained with the K= &N, then see what the results are with a good quality paper filter (sam= e runway, temperature, barometric pressure, etc., of course). =A0If the mp = & rpm are no lower, the K&N is giving you no more performance.

Hopefully you are already doing oil analysis (OA) on yo= ur engine and will have pretty good baseline numbers established.

So, next, compare the silicon (dirt) and wear metals (alumi= num, chromium, iron, copper, etc.) over the next couple of oil changes. =A0= I'll bet you will start to see a decline in both dirt and metal with th= e first oil change (using a paper air filter) and will continue to see a de= cline over the next couple of changes until things stabilize at a lower lev= el.

Doing the above will take all the conjecture, opinion, = etc., out of the filter question. =A0I can really only deal with hard data.=

In case you're not already doing OA, here'= ;s a link to a sample aircraft OA. =A0Put your computer pointer over any of= the elements and it will give an explanation of them and from which parts = the metal could be coming. Actually, the pointer over any of the blue highl= ighted areas will bring up explanations.=A0
=A0
=A0http://www.blackstone-labs.com/report-explanation.php

Hope this is helpful to anybody not familiar with oil = analysis.
Blackstone does not charge for the sample kits and only charges when a= n analysis is done--$25 each or, as I do, pay for 6 at a time and it's = only $20 each.

I would also highly recommend using= their vacuum pump to pull the sample through the dipstick tube. Allows one= to pull samples without draining the oil. Makes it very neat, clean and qu= ick. =A0I will sometimes pull a sample in the middle or last third of an oi= l change interval just to monitor what is happening with the engine. =A0The= vacuum pump makes this a clean 5 minute job. =A0I use it even (before) whe= n I am draining the oil.

Bill


On Sat, Jan 18, 2014 at 11:42 AM, Steve Colwell <mcmess1919@yahoo.com> wrote:

=A0

Take the old filter with you.=A0 They can probably = match it.=A0 Does the previous owner know the part number?

=A0

Bill

=A0<= /p>

If the Auto Parts Stor= e asks what it is off of; tell them it is a custom made, three wheel, off r= oad vehicle.=A0 I doubted the filtering efficiency when I could see dayligh= t thru the K&N.=A0 We used to call them rock strainers on Hot Rods.=A0 = I would like to compare a paper media filter with the K&N I fitted to t= he IO-550N in our Legacy.=A0

=A0

Steve Colwell=A0=A0

=A0

=A0


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