X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from vms040pub.verizon.net ([206.46.252.40] verified) by logan.com (CommuniGate Pro SMTP 5.2c1) with ESMTP id 2555977 for flyrotary@lancaironline.net; Tue, 04 Dec 2007 15:09:17 -0500 Received-SPF: pass receiver=logan.com; client-ip=206.46.252.40; envelope-from=expressben@verizon.net Received: from ben22d25bef6f7 ([71.173.0.222]) by vms040.mailsrvcs.net (Sun Java System Messaging Server 6.2-6.01 (built Apr 3 2006)) with ESMTPA id <0JSJ00AQ9JM41Z79@vms040.mailsrvcs.net> for flyrotary@lancaironline.net; Tue, 04 Dec 2007 14:01:17 -0600 (CST) Date: Tue, 04 Dec 2007 15:00:58 -0500 From: "Ben Baltrusaitis" Subject: Water/Meth injection To: "Rotary motors in aircraft" Message-id: <000601c836b0$677a6e40$2f01a8c0@ben22d25bef6f7> MIME-version: 1.0 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 X-Mailer: Microsoft Outlook Express 6.00.2900.3138 Content-type: multipart/alternative; boundary="----=_NextPart_000_0003_01C83686.7A75D7C0" X-Priority: 3 X-MSMail-priority: Normal X-Antivirus: avast! (VPS 071204-1, 12/04/2007), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_0003_01C83686.7A75D7C0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable I have moved away from the Rotary (shame on me) and toward the Subaru. I = have been researching how to get more torque and found the only way is = with boost. The street Subaru guys are injecting water and methanol to = avoid detonation under high boost--getting 450 hp from 2.5 liters. The = methanol and water cool the charge while the methanol also increases the = octane. This allows them to run 89 or 91 octane fuel under low boost w/o = injection and have high octane-high boost with injection. The injection = is set to start at a certain boost pressure or rpm level. I am going to go this route in my aerobatic biplane so I can run on = cheap fuel in econo cruise and still not detonate while doing full = throttle aerobatics. One of the side benefits of this injection is lower EGTs--as much as 400 = degrees. Has anyone done any testing with water injection to lower EGTs? Another benefit is much cleaner combustion chambers. That sounds useful = to me, too. http://forums.nasioc.com/forums/showthread.php?t=3D937176 http://www.slowboyracing.com/estore/home.php?cat=3D4559 Ben ------=_NextPart_000_0003_01C83686.7A75D7C0 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable

I have moved away from the Rotary (shame on me) and toward the = Subaru. I=20 have been researching how to get more torque and found the only way is = with=20 boost. The street Subaru guys are injecting water and methanol to avoid=20 detonation under high boost--getting 450 hp from 2.5 liters. The = methanol and=20 water cool the charge while the methanol also increases the octane. = This=20 allows them to run 89 or 91 octane fuel under low boost w/o injection = and have=20 high octane-high boost with injection. The injection is set to start at = a=20 certain boost pressure or rpm level.

I am going to go this route in my aerobatic biplane so I can run on = cheap=20 fuel in econo cruise and still not detonate while doing full throttle=20 aerobatics.

One of the side benefits of this injection is lower EGTs--as much = as 400=20 degrees. Has anyone done any testing with water injection to lower = EGTs?

Another benefit is much cleaner combustion chambers. That = sounds=20 useful to me, too.

http:/= /forums.nasioc.com/forums/showthread.php?t=3D937176

http://w= ww.slowboyracing.com/estore/home.php?cat=3D4559

Ben

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