X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from nm6-vm0.access.bullet.mail.sp2.yahoo.com ([98.139.44.114] verified) by logan.com (CommuniGate Pro SMTP 5.4.1) with SMTP id 5100482 for flyrotary@lancaironline.net; Mon, 22 Aug 2011 21:03:29 -0400 Received-SPF: none receiver=logan.com; client-ip=98.139.44.114; envelope-from=ceengland@bellsouth.net Received: from [98.139.44.96] by nm6.access.bullet.mail.sp2.yahoo.com with NNFMP; 23 Aug 2011 01:02:55 -0000 Received: from [98.139.44.78] by tm1.access.bullet.mail.sp2.yahoo.com with NNFMP; 23 Aug 2011 01:02:55 -0000 Received: from [127.0.0.1] by omp1015.access.mail.sp2.yahoo.com with NNFMP; 23 Aug 2011 01:02:55 -0000 X-Yahoo-Newman-Id: 168993.80036.bm@omp1015.access.mail.sp2.yahoo.com Received: (qmail 48439 invoked from network); 23 Aug 2011 01:02:54 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bellsouth.net; s=s1024; t=1314061374; bh=vgZp0EArsAKOkHDyDsIMp9qSmThBF14HaualcCcwnBU=; h=X-Yahoo-Newman-Property:X-YMail-OSG:X-Yahoo-SMTP:Received:Message-ID:Date:From:User-Agent:MIME-Version:To:Subject:References:In-Reply-To:Content-Type; b=rUxNCT5fb/T0unFgdLUpA5dobEJB8IXxJImBb5uZfZk5ne1dsM0Yt55pgZHsPlMebtNRKQzGV0NfaWrDrvtqPI0qOPp9uP2+NPo3CypcaMjfvdwLB/9V5k5y7AsNSGsue4J972VGSZVR3wsKbgW+BpnAeQhxF7R2cqGLxXQ+bbM= X-Yahoo-Newman-Property: ymail-3 X-YMail-OSG: r8XtPaAVM1mL6SD6kRc7oVmxfl_EU1y.r.gAd5a_fYe2YB_ SoizCTPBBxVki6ZohHaklU5mbtyq2apukhu5myAP5TDr9IUh6qNGFjbxHK5s EIhCKSoAfjas8DtlU2oMaH_Dsxgsg22zEz4PdlaMkDg5IA9cnBSdQAeEDDpN 25CiPPTjoemKb__Gp8do8EYjKTE2kTqmO9YEt9L3nMTRe_CHpjuWYhpfsgzc HzNYF1RcTlWmFoEXcjU5cNa4XjzZSkAMZQr47edptpSTZ8JPv6sfMwxA_1jT G4NdJDn.p.PRgOWvh_BipA8VjYy6BDduKse0uj49B9NTYsPSJteodV8AE10d 86txo2agDW8_9QNeVMKOCHi813FDDt82Yg9UoIOacDGcKbzl6vXTDKTz5 X-Yahoo-SMTP: uXJ_6LOswBCr8InijhYErvjWlJuRkoKPGNeiuu7PA.5wcGoy Received: from [192.168.10.8] (ceengland@98.95.185.244 with plain) by smtp110.sbc.mail.gq1.yahoo.com with SMTP; 22 Aug 2011 18:02:54 -0700 PDT Message-ID: <4E52FC3F.1030607@bellsouth.net> Date: Mon, 22 Aug 2011 20:02:55 -0500 From: Charlie England User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.18) Gecko/20110617 Thunderbird/3.1.11 MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: Renesis Exhaust References: In-Reply-To: Content-Type: multipart/alternative; boundary="------------060400000300080607020202" This is a multi-part message in MIME format. --------------060400000300080607020202 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit I can't point to the actual source, but the story is that one of the big rotary after-market performance suppliers tried a lot of different headers on the RX-8 (Renesis) & couldn't get more than around 7hp more than the stock manifold. Supposedly due to the no-overlap nature of the Renesis intake/exhaust tuning. Charlie On 08/22/2011 05:00 PM, Dwayne Parkinson wrote: > Don't know the optimal length but turns and bends do affect the output. > > ------------------------------------------------------------------------ > *From:* Samuel Treffinger > *To:* Rotary motors in aircraft > *Sent:* Sunday, August 21, 2011 5:43 PM > *Subject:* [FlyRotary] Renesis Exhaust > > Hey, How long is optimal for the Exhaust runners in the Renesis engine > before joining at the muffler? also, Do turns or bends in the exhust > system affect the output? > Sam > > --------------060400000300080607020202 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit I can't point to the actual source, but the story is that one of the big rotary after-market performance suppliers tried a lot of different headers on the RX-8 (Renesis) & couldn't get more than around 7hp more than the stock manifold. Supposedly due to the no-overlap nature of the Renesis intake/exhaust tuning.

Charlie

On 08/22/2011 05:00 PM, Dwayne Parkinson wrote:

Don't know the optimal length but turns and bends do affect the output.

From: Samuel Treffinger <samuel.treffinger@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Sunday, August 21, 2011 5:43 PM
Subject: [FlyRotary] Renesis Exhaust

Hey, How long is optimal for the Exhaust runners in the Renesis engine before joining at the muffler? also, Do turns or bends in the exhust system affect the output?

Sam

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