X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [65.54.250.74] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 5.0.8) with ESMTP id 975170 for flyrotary@lancaironline.net; Wed, 08 Feb 2006 18:03:55 -0500 Received-SPF: pass receiver=logan.com; client-ip=65.54.250.74; envelope-from=lors01@msn.com Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Wed, 8 Feb 2006 15:03:08 -0800 Message-ID: Received: from 4.171.147.206 by BAY115-DAV2.phx.gbl with DAV; Wed, 08 Feb 2006 23:03:08 +0000 X-Originating-IP: [4.171.147.206] X-Originating-Email: [lors01@msn.com] X-Sender: lors01@msn.com From: "Tracy Crook" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] 6 port? Date: Wed, 8 Feb 2006 18:03:05 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00B0_01C62CD9.E92E2A40" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: MSN 9 X-MimeOLE: Produced By MSN MimeOLE V9.10.0011.1703 Seal-Send-Time: Wed, 8 Feb 2006 18:03:05 -0500 X-OriginalArrivalTime: 08 Feb 2006 23:03:08.0307 (UTC) FILETIME=[D37E7630:01C62D03] This is a multi-part message in MIME format. ------=_NextPart_000_00B0_01C62CD9.E92E2A40 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable In this case the owner does not have the choice, but the Mazda STAR = racing series uses only 4 port Renesis engines. Wish I were privy to = the decisions that went into that choice but I would guess that they = were some of the same ones that lead me to the same one. In any case, = those STAR racers go pretty good! There is little doubt that the 6 port has more potential power. It's = just a case of choosing your priorities and whether you really need the = extra power. I'm looking forward to Bill's 6 port manifold project = results. We really do need a source of good light weight manifolds. Wish it were in real life, but I finally won enough "money" to buy the = Mazda 787 LeMans race car. Even though it's just a video game (GT4), = that is a hell of an exciting car to drive!. Tracy (wishing for enough spare time to play GT4 more often : ) ----- Original Message -----=20 From: Lehanover@aol.com=20 To: Rotary motors in aircraft=20 Sent: Wednesday, February 08, 2006 1:50 AM Subject: [FlyRotary] 6 port? I have never seen a race car (where the owner had a choice), run with = a 6 port engine. The 6 port works with high revs and a very complex tuned manifold. = Without the valving to transition between the RPM ranges, it will be a = dog at lower revs. Poor runner velocity and the like. Save yourself a lot of pain and buy the 4 port. Simple manifolding, = even if you build it yourself. All of the racing stuff works fine, if you want porting.=20 Look for 180-190 HP from the base engine with a big TB. If you really = need well over 200 at below 7,000 RPM buy the turbo now. Or learn to = street port. You will be surprised to find out that real airplane = engines have nothing close to their advertised HP. That 180 real dynoed = HP of a rotary will have you outrunning the real airplane engine powered = stuff with the advertised 200 HP. Lynn E. Hanover ------=_NextPart_000_00B0_01C62CD9.E92E2A40 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
In this case the owner does not have the choice, but the Mazda STAR = racing=20 series uses only 4 port Renesis engines.  Wish I were privy to the=20 decisions that went into that choice but I would guess that they were = some of=20 the same ones that lead me to the same one.  In any case, = those=20 STAR racers go pretty good!
 
 There is little doubt that the 6 port has more potential = power. =20 It's just a case of choosing your priorities and whether you really need = the=20 extra power.  I'm looking forward to Bill's 6 port manifold project = results.  We really do need a source of good light = weight=20 manifolds.
 
Wish it were in real life, but I finally won enough "money" to buy = the=20 Mazda 787 LeMans race car.  Even though it's just a video game = (GT4),=20  that is a hell of an exciting car to drive!.
 
Tracy  (wishing for enough spare time to play GT4 more = often  :=20 )
----- Original Message -----
To: Rotary motors in = aircraft
Sent: Wednesday, February 08, = 2006 1:50=20 AM
Subject: [FlyRotary] 6 = port?

I have never seen a race car (where the owner had a choice), run = with a 6=20 port engine.
 
The 6 port works with high revs and a very complex tuned = manifold.=20 Without the valving to transition between the RPM ranges, it will be a = dog at=20 lower revs. Poor runner velocity and the like.
 
Save yourself a lot of pain and buy the 4 port. Simple = manifolding, even=20 if you build it yourself.
All of the racing stuff works fine, if you want porting.
 
Look for 180-190 HP from the base engine with a big TB. If you = really=20 need well over 200 at below 7,000 RPM buy the turbo now. Or learn to = street=20 port. You will be surprised to find out that real airplane engines = have=20 nothing close to their advertised HP. That 180 real dynoed HP of a = rotary will=20 have you outrunning the real airplane engine powered stuff with the = advertised=20 200 HP.
 
 
Lynn E. = Hanover
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