Return-Path: <13brv3@bellsouth.net> Received: from imf24aec.mail.bellsouth.net ([205.152.59.72] verified) by logan.com (CommuniGate Pro SMTP 4.3c3) with ESMTP id 813952 for flyrotary@lancaironline.net; Mon, 21 Mar 2005 13:17:34 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.72; envelope-from=13brv3@bellsouth.net Received: from rd ([65.6.194.9]) by imf24aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with ESMTP id <20050321181650.ZUAM5558.imf24aec.mail.bellsouth.net@rd> for ; Mon, 21 Mar 2005 13:16:50 -0500 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: BMW and EWP Date: Mon, 21 Mar 2005 12:16:53 -0600 Message-ID: <00a401c52e42$2ac526d0$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00A5_01C52E0F.E02AB6D0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2527 In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_00A5_01C52E0F.E02AB6D0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable So, the question becomes, what approach cools the metal engine parts = best, high or low flow? Methinks high works best.=20 Mark S. Hi Mark, =20 I haven't heard a single person disagree with this. The real question = is how much flow do we need?=20 =20 Clearly, a single Davies Craig pump will cool a turbo 13B, or a race = engine, so hyper-flow isn't "needed" for cooling. Perhaps in time this will negatively affect the housings, but only time (lots of it) will tell. =20 =20 FWIW, running the stock system isn't a guarantee that you'll never have these problems either, because we aren't running the engine the way = Mazda intended. Heck, for all we know, Mazda had to move the liquid fast = enough to keep plain water from boiling, since they know that some people will = put that in the engine. Remember how they decided to use sump oil for the = apex seals? Purely a concession to marketing, and not in the engine's best interest. =20 =20 EWP's aren't for everyone, at least until the rest of the automaker get = on board with it :-) They solve installation problems for some folks, = provide a proven backup system, and have some other (apparently) debatable advantages. Still a free country. =20 Cheers, Rusty (Dave, can you prescribe something for Leon's headache) =20 ------=_NextPart_000_00A5_01C52E0F.E02AB6D0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

So, the question becomes, what approach cools the = metal engine=20 parts best, high or low flow?  Methinks high works = best. 

Mark=20 S.

Hi=20 Mark,
 
I = haven't heard a single=20 person disagree with this.  The real question is how much flow do = we=20 need? 
 
Clearly, = a single Davies=20 Craig pump will cool a turbo 13B, or a race engine, so hyper-flow isn't=20 "needed"  for cooling.  Perhaps in time this will negatively = affect=20 the housings, but only time (lots of it) will=20 tell.  
 
FWIW, = running the stock=20 system isn't a guarantee that you'll never have these problems either, = because=20 we aren't running the engine the way Mazda intended.   Heck, = for all=20 we know, Mazda had to move the liquid fast enough to keep plain water = from=20 boiling, since they know that some people will put that in the = engine. =20 Remember how they decided to use sump oil for the apex seals?  = Purely a=20 concession to marketing, and not in the engine's best interest. =20
 
EWP's = aren't for=20 everyone, at least until the rest of the automaker get on board with it=20 :-)  They solve installation problems for some = folks, provide a=20 proven backup system, and have some other (apparently) debatable=20 advantages.  Still a free country.
 
Cheers,
Rusty = (Dave, can you=20 prescribe something for Leon's headache)   



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