Mailing List flyrotary@lancaironline.net Message #24188
From: Jerry Hey <jerryhey@earthlink.net>
Subject: Re: [FlyRotary] Re: Fuel Injector Position (was Re: Makingprogress on Chris n Dave's Velocity Engine)
Date: Mon, 20 Jun 2005 14:21:29 -0500
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Jesse,  this site has been mentioned  before by Leon.  I have used it extensively in building my intake.  There are several related articles such as how to build a fuel rail. Once you are there you can click on the  different articles.   Gives actual dimensions such as the fuel injector boss should be .540 to .545 i.d. to provide proper crush for the o-ring.  Pretty much everything is covered.       Jerry

 Go to http://www.sdsefi.com/techinta.htm






On Monday, June 20, 2005, at 02:06 PM, Ernest Christley wrote:

jesse farr wrote:

Hey Jerry, Why not tell us where to find the (How to Fabricate an Intake Manifold) on the net, please.
jofarr, soddy tn

    ----- Original Message ----- *From:* Jerry Hey
    <mailto:jerryhey@earthlink.net>
         based on Paul Lamar's current p port testing there is no problem
    with placing the injectors at the far end of the runners. This is
    also backed up by an article on the internet (How to Fabricate an
    Intake Manifold) The idle issue is not with injector location but
    rather with butterfly location.

http://www.sdsefi.com/tech.html

And as an addendum:

How to make fuel injector bosses if you don't have a lathe.
File down the edge on a standard plumber's tube cutter.  Run it around a piece of 5/8"x.035 tube so that it make a ridge on the inside.  Run one ridge to just have a press on boss.  Run two ridges to have the boss 'capture' the o-ring.

I'm working on a method to make bosses out of 1/2" tube (cause I have some in stainless laying around).  My current thinking is a rubber spindle on a bolt.  Crank it down till the steel expands a bit.

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----===<{{(oQo)}}>===----        Dyke Delta         |
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