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[Fot] Holley Red Top fuel pump question

Subject: [Fot] Holley Red Top fuel pump question
From: levilevi at comcast.net (Bud R)
Date: Sat, 4 Feb 2017 10:58:55 -0700
List,

Holley recommends that their fuel pump be installed so that the pump is lower 
than the fuel level. Has anyone had a problem with the pump installed  
differently? 

My dilemma is that my fuel cell sits low (in a cut out with brackets) in the 
boot of my Spitfire and the previous owner had installed the old Holley pump 
lower than the fuel level but in what I felt like was a dangerous place as it 
was exposed under the car and the fuel lines were also routed where they could 
have gotten easily damaged (basically very close to the wheel well). I?m moving 
the fuel pump and the lines to be inside the boot but it is not possible to 
make the pump sit entirely below the fuel level since the bottom of the fuel 
cell sits below the floor of the boot. The chosen location makes the pump sit 
about 1/3 of the way from the fuel cell bottom.

I know Holley wants to take advantage of the siphoning effect (apparently 
because they push fuel better than they pull fuel) but does that matter as long 
as the fuel pressure is maintained at the proper level for my carbs? I figure 
if I run with the fuel cell full (8 gal) the fuel level will be above the pump 
the majority of the time. I?ve been burning about 3-4 gallons per (20 min.) 
race.

Has anyone had issues with the Holley fuel pumps not being installed exactly 
like Holley says? I?ve seen some other Spitfire racers with the Holley fuel 
pump NOT below the fuel level so I?m hoping it works for me to do the same. I?m 
thinking about one of the two locations shown in the pics. Right in front of 
the fuel cell is my preferred location at this point as the other location to 
the side of the fuel cell would be more vulnerable in a crash situation.

Thanks
Bud Rolofson

Extreme Parts Racing (more than just a haircut)

71TR6 CC57365 (Good 6)
71 Spitfire MK IV Race Car #3
69 Spitfire MK III (back up FE engine/dinghy car)
93 Minnie Winnie Race Support Vehicle 
77 Z-50A Hardly Davidson Honda Mini-Trail Bike (Triumph Pit Bike)
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