[Tigers] Fuel Pressure

[Joel Martin]

> I am having issues with my rebuilt
> Autolite 4100 4 barrel on the 1965 Ford 289 HiPo engine with
> about 271 HP and 5/16" fuel line.  The
> passenger side secondary is filling up with gas at idle and
> then leaking out the side.  I have checked float level,
> same as primary.  No dirt etc in needle and seat. 
> I am  thinking I have too much fuel pressure and fuel
> is pushing past the needle and seat.
>
> I have disconnected the fuel line from carb and with
> pressure guage on line, I have 5.52 lbs of pressure. 
> My understanding was that the 4100 needles were good to 8
> lbs before fuel would push past needle and seats.  When
> the pump gets to 5.52 lbs with only the pressure guage
> connected the pump stops ticking, when connected to the carb
> it never stops ticking\pumping
>
> I purchase the Facet fuel pump Part Number: BK 6101074
> Product Line: Balkamp
> Attributes:
> Fuel Pump Fitting Type[s] : 5/16" Barb Elbow
> Fuel Pump Gallons Per Hour : 36 gph
> Fuel Pump Line Size : 5/16"
> Fuel Pump Pressure Rating : 4 - 5.5 psi
>
> My understanding was that the 4100 needles were good to 8
> lbs before fuel would push past needle and seats.  The
> stock SU pumped 15 GPH and would support 200 HP, at least to
> my understanding - no idea of the PSI?  What
> PSI\GPH is needed to support the 271 HP engine?
>
> The only thing I can think to do is purchase a fuel
> regulator and choke down the PSI until secondary stops
> pushing gas past the needle and seat.
>
> Any ideas would be appreciated.
>
> Joel Martin
>