X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imo-m17.mx.aol.com ([64.12.138.207] verified) by logan.com (CommuniGate Pro SMTP 5.1.2) with ESMTP id 1547801 for flyrotary@lancaironline.net; Thu, 09 Nov 2006 08:16:46 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.12.138.207; envelope-from=Lehanover@aol.com Received: from Lehanover@aol.com by imo-m17.mx.aol.com (mail_out_v38_r7.6.) id q.552.65ae54d4 (14457) for ; Thu, 9 Nov 2006 08:09:51 -0500 (EST) From: Lehanover@aol.com Message-ID: <552.65ae54d4.3284829f@aol.com> Date: Thu, 9 Nov 2006 08:09:51 EST Subject: Re: [FlyRotary] Re: P Porting template? To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1163077791" X-Mailer: 9.0 Security Edition for Windows sub 5331 X-Spam-Flag: NO -------------------------------1163077791 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 11/9/2006 7:29:00 A.M. Eastern Standard Time, daval@iprimus.com.au writes: Hi Hans, Doug , Ed, anyone else, looking at the Mazda dyno graphs, All RX8 engines are side port, the 4 port makes 200+ at 7000 right out of the box, so you can easily get 170-180 at 6000 rpm. BR, Dave McC So long as you start with the RX-8 engine, that may be true. Here is some data from a strong running 12A from my GT-3 racer. This a bridgeported engine of 2292cc displacement with a Weber carb and 38mm chokes. There is no data below 6,500 as we don't go that low except leaving the pits. 6,500 RPM 139.6 foot pounds of torque. HP 173.3 EGTs 1550-1491 BSFC .666 oil temp 162 oil pressure 99.9 A/F 12.3 Timing 25 BTDC Best power 244.9 HP at 9,400 RPM Each of the two 38mm holes feeds only one rotor housing. So are quite restrictive, and the 13B has the larger displacement, so you could do better HP wise. Lynn E. Hanover -------------------------------1163077791 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

In a message dated 11/9/2006 7:29:00 A.M. Eastern Standard Time,=20 daval@iprimus.com.au writes:

<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>Hi Hans,=20 Doug , Ed, anyone else,
looking at the Mazda dyno graphs,
All =20= RX8=20 engines are side port, the 4 port makes 200+ at 7000 right
out o= f=20 the box, so you can easily get 170-180 at 6000 rpm.
BR, Dave=20 McC

So long as you start with the RX-8 engine, that may be true.

Here is some data from a strong running 12A from my GT-3 racer. This a=20 bridgeported engine

of 2292cc displacement with a Weber carb and 38mm chokes.

There is no data below 6,500 as we don't go that low except leaving the= =20 pits.

6,500 RPM

139.6 foot pounds of torque.

HP 173.3

EGTs 1550-1491

BSFC .666

oil temp 162

oil pressure 99.9

A/F 12.3

Timing 25 BTDC

Best power 244.9 HP at 9,400 RPM

Each of the two 38mm holes feeds only one rotor housing. So are quite=20 restrictive, and the 13B has the larger displacement, so you could do better= HP=20 wise.

Lynn E. Hanover

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