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Re: [Vintage-race] Holley fuel regulator adjustment

To: Awgertoo@aol.com,vintage-race@autox.team.net, VRG_NewsGroup@yahoogroups.com
Subject: Re: [Vintage-race] Holley fuel regulator adjustment
From: Tony Drews <tony@tonydrews.com>
Date: Wed, 26 Mar 2008 19:22:22 -0500
Just adjust the pressure and ignore the instructions about float 
level.  If you don't have gas spewing out the overflows, all is well.

- Tony

At 05:32 PM 3/26/2008, Awgertoo@aol.com wrote:
>I recently purchased a Holley Blue fuel pump to  replace the Facet cube I
>have on my Elva which has an MGA 1500 engine w/two HS6  SU's. The 
>pump came with
>the 4.5-9 psi regulator which I have plumbed up to the  carbs using a Y-block
>with a pressure guage installed in a 3rd-outlet.
>
>I  know that SU's supposedly like 2-4 psi but several folks have told me that
>they  have had good results with this pump/regulator combo and have been able
>to  adjust the regulator's flow down to 4.5 or so psi without any
>overpressure  problems on their SU's, and that the high pressure 
>regulator is better than
>the  1-4 psi Holley regulator. I hope I have made the right selection here.
>I'm using  AN6 lines from the fuel cell to the regulator with a 3/8" 
>nipple to
>the block  and then 5/16" lines from the Y-block to the carbs,
>
>In any case I am a  bit confused by the Holley instructions which state:
>
>"Any change made in  fuel pressure will change the fuel bowl float level
>requirements. A readjustment  in fuel bowl levels will be required for proper
>operation of the fuel system."
>
>Assuming I am able to adjust the pressure down to where it does not
>overwhelm the needle valves in the float bowls I do not understand 
>why I will  need to
>adjust the float bowl level. I thought that on SU's that is pretty much  a
>fixed thing.
>
>Can someone shed some light here?
>
>Thanks in  advance--Michael Oritt
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