Return-Path: Received: from ms-smtp-01.tampabay.rr.com ([65.32.1.43] verified) by logan.com (CommuniGate Pro SMTP 4.1.4) with ESMTP id 2606963 for flyrotary@lancaironline.net; Sun, 28 Sep 2003 11:17:45 -0400 Received: from cfl.rr.com (204.90.35.65.cfl.rr.com [65.35.90.204]) by ms-smtp-01.tampabay.rr.com (8.12.5/8.12.5) with ESMTP id h8SFHi9u008769 for ; Sun, 28 Sep 2003 11:17:44 -0400 (EDT) Message-ID: <3F76FC55.4060200@cfl.rr.com> Date: Sun, 28 Sep 2003 11:20:53 -0400 From: matt baron User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.3.1) Gecko/20030425 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Life is better at 5 psi References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Russell, The wastegate on my 89 (S5) RX-7's turbo cracks right around 5.5 PSI. The higher (than S4, being 86-88) boost is attained with an ECU controlled solenoid which bleeds pressure from the signal line between the compressor and the wastegate actuator. Porting the wastegate is -usually- a workable way for the RX-7's to prevent boost from creeping beyond the desired level, but I have heard of some cars with free-flowing exhaust still creeping beyond the set point during periods of extended load (ie accelerating in higher gears). HTH Matt Russell Duffy wrote: > I'm also trying to pick up an 87-88 turbo actuator, which was only > 5.5 psi I think. >