Return-Path: <13brv3@bellsouth.net> Received: from [209.114.234.2] (HELO IPOfCard1.guest-tek.com) by logan.com (CommuniGate Pro SMTP 4.2b2) with ESMTP id 3176159 for flyrotary@lancaironline.net; Sat, 17 Apr 2004 17:24:11 -0400 Received: from USDCLES112NB160 ([198.18.1.149]) by IPOfCard1.guest-tek.com (8.11.6/8.11.6) with SMTP id i3HLBFu02415 for ; Sat, 17 Apr 2004 17:11:15 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "Rotary motors in aircraft" Subject: RE: [FlyRotary] Re: intake ideas? Date: Sat, 17 Apr 2004 17:23:16 -0500 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0025_01C424A0.ABAD5FD0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.6604 (9.0.2911.0) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_0025_01C424A0.ABAD5FD0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit The question of tuned runners is 'how much is the benefit?', and 'what do you want to give up for it'. Thanks to you both for the comments. I think Al hit the nail on the head with the above statement. There are so many compromises that have to be made, particularly when you don't have much room to work with. It would be great to see a direct comparison of a short intake vs a nicely tuned one. AFAIK, no one has done that. I know Ed had a short intake in the past, but I'm thinking that he changed some other major items (engine or fuel injection system?) at the same time he changed intakes, which would invalidate the test. I also agree about the injector placement, and I'm starting to think the best arrangement is either to have the primaries in the block, and secondaries in the TB, or all four injectors in the TB on a short intake. Since I have both a 2 and a 4 injector version of the TWM TB, I guess I can go either way on the next iteration. BTW, Al, did you make that intake? It's beautiful! Cheers, Rusty (wishing I was home where I could start working on the new intake) ------=_NextPart_000_0025_01C424A0.ABAD5FD0 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

The = question of=20 tuned runners is ‘how much is the benefit?’, and ‘what = do you want to give up=20 for it’.   
 
Thanks to you=20 both for the comments.  I think Al hit the nail on = the head=20 with the above statement.  There are so many compromises that = have to=20 be made, particularly when you don't have much room to work with.  = It would=20 be great to see a direct comparison of a short intake vs a nicely tuned=20 one.  AFAIK, no one has done that.  I know Ed had a short = intake=20 in the past, but I'm thinking that he changed some other major items = (engine or=20 fuel injection system?) at the same time he changed intakes, which would = invalidate the test. 
 
I = also agree=20 about the injector placement, and I'm starting to think the best=20 arrangement is either to have the primaries in the block, and = secondaries=20 in the TB, or all four injectors in the TB on a short intake.  = Since I=20 have both a 2 and a 4 injector version of the TWM TB, I guess I = can go=20 either way on the next = iteration.  
 
BTW, Al, did you=20 make that intake?  It's = beautiful!
 
Cheers,
Rusty (wishing I=20 was home where I could start working on the new=20 intake)
 
 
 
 
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