User-Agent: Microsoft-Entourage/10.1.4.030702.0
Date: Thu, 12 Feb 2004 16:55:52 -0500
Subject: Re: [FlyRotary] EFI Fuel Pressure
From: Bulent Aliev <atlasyts@bellsouth.net>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Message-ID: <BC516098.951D%atlasyts@bellsouth.net>
In-Reply-To: <list-2988900@logan.com>
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On 2/12/04 9:41 AM, "Scott Stout" <squiggles@yahoo.com> wrote:

> In a NA 13b setup, using the stock fuel pressure regulator what is the
> pressure on the fuel rail?  Is this the ideal pressure?
> 
> Driving this question is I have to have to get fuel return fittings
> welded to my tanks, well the highest point on the tank is not in the
> easiest of spots to plumb to, thus I would like to return to a point
> about half way down the tank.  So, not only does the fuel have to be
> pumped up 40" or so it also has to overcome 5gal or so of fuel weight
> above the return fitting.  External to the rotary lists, some of those
> who I have floated the idea with have said the engine will run rich as
> the fuel rail pressure will increase.  However, it doesn't seem to make
> sense to me as the pressure in the fuel rail will probably be higher,
> much higher, than the pressure needed to overcome the push through the
> return fuel line.
> 
> What are your thoughts?
> 
> Thank You.
> 
> -Scott
> http://home.att.net/~the_stouts_zenith_801/
> 

Scott, I would install a bent tube going up just under the top of the tank.
This way you will avoid the backpressure of the fuel
 -- 
Bulent