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Aeromotive Stealth Fuel System Upgrade

1989 Mustang Lx Fuel System Front View
Casey Upton of DMC Racing... 
   
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1989 Mustang Lx Fuel System Front View
Casey Upton of DMC Racing lowers the stock fuel tank on to a rack. Two straps and a cover need to be removed in order to get the tank out of the car. A little wiggling is required to get the filler neck to slip out of the tank.
1989 Mustang Lx Fuel System Front View
The wheelwell liner on the... 
   
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1989 Mustang Lx Fuel System Front View
The wheelwell liner on the passenger side was removed to gain access to the old fuel lines for removal. The new Aeromotive lines were run behind the liner as well.
1989 Mustang Lx Fuel System Front View
This rubber grommet was the... 
   
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1989 Mustang Lx Fuel System Front View
This rubber grommet was the only casualty as we pulled the tank down. It split as time and weather took its toll on our '89 coupe. One call to Latemodel Restoration solved our problem. The unfortunate part is that we couldn't fill the tank until the part arrived as the filler-neck would leak without it.
1989 Mustang Lx Fuel System Front View
Our old system utilized a... 
   
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1989 Mustang Lx Fuel System Front View
Our old system utilized a pick-up tube that was inserted in the fuel tank. The pump sucked fuel through the tube, sort of like drinking from a straw. That is -8 line for the feed, while the return checked in at -6.
1989 Mustang Lx Fuel System Front View
It's helpful to have AN wrenches... 
   
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1989 Mustang Lx Fuel System Front View
It's helpful to have AN wrenches handy when working with fittings. The wrenches are not required, but they fit nicely and don't scratch the anodized surface.
1989 Mustang Lx Fuel System Front View
Upton removed the Ford Racing... 
   
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1989 Mustang Lx Fuel System Front View
Upton removed the Ford Racing GT-40 upper intake manifold to expose the fuel rails. He also unhooked the wiring harness for easier access to the fuel injectors and rails.
1989 Mustang Lx Fuel System Front View
The lower intake ports were... 
   
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1989 Mustang Lx Fuel System Front View
The lower intake ports were taped off to prevent bolts or debris from falling in. Upton removed the old fuel rails, which were fine, but we want to install the fancy new Aeromotive ones.
1989 Mustang Lx Fuel System Front View
The fuel injectors are swapped... 
   
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1989 Mustang Lx Fuel System Front View
The fuel injectors are swapped to the new rails. Add a little grease to the rubber O-ring on the injector. Keeping the rubber O-ring lubed nicely is good for longevity and eases installation.
1989 Mustang Lx Fuel System Front View
Here is a problem with the... 
   
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1989 Mustang Lx Fuel System Front View
Here is a problem with the driver-side fuel rail--it interferes with the distributor. The stainless steel braided line cannot be attached in 5.0L applications. There are two choices. The first is the easy one as Aeromotive knows this problem and has a port underneath the rail. The other is to swap to a smaller distributor cap, like the one from MSD.
1989 Mustang Lx Fuel System Front View
Upton removed he cap from... 
   
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1989 Mustang Lx Fuel System Front View
Upton removed he cap from the underside of the rail and installed it in the front hole.
1989 Mustang Lx Fuel System Front View
He then used the open fitting... 
   
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1989 Mustang Lx Fuel System Front View
He then used the open fitting from the front and screwed it into place under the fuel rail.
1989 Mustang Lx Fuel System Front View
The instructions don't suggest... 
   
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1989 Mustang Lx Fuel System Front View
The instructions don't suggest a specific mounting location for the fuel pressure regulator. We mounted it on the firewall, which, by the way, is not NHRA-legal. To be NHRA-legal, the regulator must be mounted at least 6 inches from the firewall. With our setup, the return lines are plumbed to the back of the rails, but you can put them at either end of the fuel rail.

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1989 Mustang Lx Fuel System Front View 1989 Mustang Lx Fuel System Front View
1989 Mustang Lx Fuel System Front View 1989 Mustang Lx Fuel System Front View
 
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