Re: Holley blue pump trunk mounting question.....
[Re: Stanton]
#132229
10/05/08 08:19 PM
10/05/08 08:19 PM
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Joined: Jan 2003
Posts: 25,200
Upper Midwest
MoparforLife
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,200
Upper Midwest
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Quote:
Since the pumps are pushers rather than pullers and rely on gravity feed for the prime(as previously stated), then theoretically you should be able to mount the pump anywhere as long as its below the tank. You could even mount it on the framerail behind the front wheel !!! Gravity will always fill the void - whether its 15" of line or 15'. I think the only reason people tend to mount them in the rear is because they're more easily concealed and the noise is behind them.
The installation instructions say to mount below the low fuel level as close to the tank/cell as possible. From the manual on the Holley site:
PUMP MOUNTING AND INSTALLATION:
The best location for mounting any electric fuel pump is the rear of the vehicle. The inlet and outlet of the pump must be
mounted below the lowest point of the tank. This is necessary to allow for an adequate fuel supply. The pump is designed to
push fuel and not designed to suck fuel out of the tank. It needs to be gravity-fed or if it’s pulling from the top of the tank, it
needs to develop a siphon feed to the pump. The pump should be mounted on the chassis, in a vertical position with the pump
motor on top. Avoid exposure of the pump and fuel lines to moving parts and to any hot areas, such as the exhaust manifold.
The pump should not be mounted in a closed area, such as the vehicle’s trunk. Follow the steps below for mounting the pump.
WARNING! THE PUMP MUST BE LOCATED SO THAT INTERFERENCE BETWEEN THE VEHICLE’S BODY AND ITS
CHASSIS MOVEMENT IS AVOIDED. THE PUMP AND ITS CONNECTING HOSES MUST NOT BE SUBJECTED
TO LOW GROUND CLEARANCE, WHERE ANY FLYING ROCKS OR ROAD DEBRIS CAN CAUSE DAMAGE.
FAILURE TO AVOID THESE HAZARDS WILL LEAD TO PUMP DAMAGE, WHICH COULD RESULT IN FIRE,
PROPERTY DAMAGE, SERIOUS INJURY, AND/OR DEATH.
1. Select a mounting site as close as possible to the fuel supply and away from possible sources of heat, as detailed
previously.
2. Use the mounting bracket (supplied) as a template and drill two clearance holes for 5/16” bolts.
3. Place the rubber gaskets (supplied) between the mounting bracket and motor housing and mount the pump in the vertical
position (motor on top) using two 5/16” bolts.
4. Connect the fuel line from the tank to the fuel filter and the filter to the inlet port of the pump. Connect the carburetor
delivery line to the outlet port of the pump. Use the same size flexible hose as original equipment. Avoid unnecessary
restrictions such as sharp bends and undersized fuel fittings and hoses. Avoid routing fuel lines in areas that would cause
chafing. All fuel line connections must be leakproof.
WARNING! DO
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Re: Holley blue pump trunk mounting question.....
[Re: tpabayflyer]
#132230
10/05/08 09:37 PM
10/05/08 09:37 PM
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Joined: Dec 2003
Posts: 5,314
Carstairs, Alberta, Canada
dave571
master
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master
Joined: Dec 2003
Posts: 5,314
Carstairs, Alberta, Canada
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Quote:
I have read that the pump should be mounted below the tank but it is required??
as said, yes.
Quote:
If I don't mount the pump below the tank am I asking for trouble?? TIA TBF
as said, yes.
mount it lower than the tank, and as close to the tank as possible.
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Re: Holley blue pump trunk mounting question.....
[Re: Stanton]
#132235
10/06/08 10:17 AM
10/06/08 10:17 AM
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Anonymous
Unregistered
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Anonymous
Unregistered
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Quote:
Since the pumps are pushers rather than pullers and rely on gravity feed for the prime(as previously stated), then theoretically you should be able to mount the pump anywhere as long as its below the tank. You could even mount it on the framerail behind the front wheel !!! Gravity will always fill the void - whether its 15" of line or 15'. I think the only reason people tend to mount them in the rear is because they're more easily concealed and the noise is behind them.
Actually, a car that can pull a ten second pass needs about 14 psi flow to the front of the car to break the force of enertia on a launch. Mounting a pusher pump close to the front of the car will starve a fast car for fuel on a hard launch. Been there, done that. If you run nitrous on this car, you're looking at a melt down on the start line. This is just me saying this, so take it how you want, but I mount them as close to fuel cell as possible with -10AN line from the cell to the pump. Then whatever size you need to run to the front of the car.
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