Return-Path: Sender: (Marvin Kaye) To: flyrotary Date: Tue, 29 Apr 2003 14:03:02 -0400 Message-ID: X-Original-Return-Path: <13brv3@mchsi.com> Received: from sccmmhc02.mchsi.com ([204.127.203.184] verified) by logan.com (CommuniGate Pro SMTP 4.1b4) with ESMTP id 2151570 for flyrotary@lancaironline.net; Tue, 29 Apr 2003 13:52:38 -0400 Received: from rad (12-218-74-116.client.mchsi.com[12.218.74.116]) by sccmmhc02.mchsi.com (sccmmhc02) with SMTP id <20030429175222mm200ev1qqe>; Tue, 29 Apr 2003 17:52:22 +0000 Reply-To: <13brv3@mchsi.com> From: <13brv3@mchsi.com> X-Original-To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Turbo info X-Original-Date: Tue, 29 Apr 2003 12:52:26 -0500 X-Original-Message-ID: <000e01c30e78$18ed86f0$0201a8c0@rad> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000F_01C30E4E.30177EF0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_000F_01C30E4E.30177EF0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable I'm not Todd of course, but. =20 1. How big did you port the wastegate, and how did you know it was too small? =20 If you don't already have a turbo, try to get an 89-91. They have = bigger wastegate ports to start with. Within a couple months, I should be able = to let you know if the wastegate is large enough on the 89-91 turbo. The = port is too small if you still produce too much boost with the wastegate = fully open. With no exhaust restrictions, I'm expecting this to be a problem = even with the larger ports. =20 =20 2. How do you plan to control the wastegate? =20 As you may have read previously, I'm planning to just use a mechanical = cable to manually control the wastegate for my normalized setup. This may or = may not prove to be a good idea, but I also have a relief valve to bleed any excess pressure that could result. That should keep me from blowing the engine, but it wouldn't be good to rely on the relief valve for boost control. =20 Rusty (trying to get 4 weeks off to get this thing ready to fly)=20 =20 =20 ------=_NextPart_000_000F_01C30E4E.30177EF0 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

I’m not Todd of course, = but…

 

1.  How big did you port the wastegate, and how = did you know it was too small?

 

If you don’t already have a = turbo, try to get an 89-91.  They have bigger wastegate ports to start with.  Within a couple months, I should be able to let you know if = the wastegate is large enough on the 89-91 turbo.   The port is = too small if you still produce too much boost with the wastegate fully open.  = With no exhaust restrictions, I’m expecting this to be a problem even = with the larger ports. 

 

2.  How do you plan to control the = wastegate?

 

As you may have read previously, = I’m planning to just use a mechanical cable to manually control the = wastegate for my normalized setup.  This may or may not prove to be a good idea, = but I also have a relief valve to bleed any excess pressure that could = result.  That should keep me from blowing the engine, but it wouldn’t be good to rely = on the relief valve for boost control.

 

Rusty (trying to get 4 weeks off to = get this thing ready to fly)

 

 

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