----- Original Message -----
From: "Steve Brooks" <steve@tsisp.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Saturday, March 06, 2004 8:09 AM
Subject: [FlyRotary] Injectors


> When I ran my engine I had trouble getting it to idle down.  It wanted to
> run a higher RPM than I thought that it should.  I checked for any air
> leaks, and after closing a bypass hole in the throttle body, it seemed to
do
> better, but if I put a plate over the throttle body the engine still runs,
> telling me that its getting air somewhere.
>
> I think that its getting air around the fuel injectors.  I'm using the
> injector tubes from Paul Lamar, and I noticed when I installed the
injectors
> that a couple of the tubes were a little loose compared to the other two,
> and all of them were not as snug fitting as the original Mazda fuel rail.
>
> I've been considering putting a bead of silicone rubber around each
injector
> to seal off the outside air.  Does anyone have an opinion about that, or a
> better suggestion ?
>
> Steve Brooks
> Cozy MKIV 13BT
> CH 25 - finishing
>
Steve, what I have used successfully to stop air leaks are rubber/vito "O"
rings.  Depending on how much clearance you have between the walls of your
injector holes and the injector, an "O" ring around the injector before you
plug it into the hole may be all that is needed.  Torquing down the fuel
rail compresses the "O" ring and seals off air leaks..

Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC