Last Updated
28 December, 2004

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UNDER CONSTRUCTION
Installing a Supra
Twin-Turbo Fuel Pump
  If you make significant changes to your 3S-GTE motor, like larger injectors and a bigger turbo, you'll need to ensure that the fuel delivery is up to the task. Installing a fuel pump from a Toyota Supra Twin Turbo is the most straightforward way to increase capacity, and it's a direct replacement for the MR2's fuel pump.  

  
Tools/Materials Needed

  • Supra Fuel Pump, Part No. 23221-46110

  • Supra Fuel Pump Filter, Part No. 23217-46110

  • Supra Fuel Pump Filter Clip, Part No. 23219-03010

  • Fuel Pump Gasket, Part No. 77169-17010

  • Fuel Filler Hose, Part No. 77213-32010 (Optional)

  • Fuel Hose No. 1, Part No. 90445-22024 (Optional)

  • Assorted sockets, 10, 12, 14mm

  • 19mm open end or flare nut wrench

  • 14mm flare nut wrench

  • Long nose pliers in a variety of sizes

  • ¼" I.D. reinforced fuel line hose

 
Doing It
  This is one of those jobs where the actual replacement takes less than 30 minutes. However, getting the tank out and putting it back in takes several hours, so make sure you allocate enough time.

My motor was out of the car, so I had the advantage of "easy" access to the fuel hoses. Even so, I was unable to save the main fuel filler hose, as I needed to cut it off. This is a pricey hose, about $35 or more even with a discount from your Toyota dealer. There's another hose (Toyota calls it Fuel Hose No. 1), that should probably be replaced at the same time. It appears to provide fuel tank venting during the filling operation.

The other hoses can probably be saved, but you'll be doing yourself a favor by simply cutting them off and replacing them, They are all standard ¼" I.D fuel line hoses.

Another advantage with the motor out was that the coolant lines were empty, so I could move them out of the way. As you will find, the tank is a tight fit, and the A/C and coolant lines are additional obstructions that make the project tougher than it should be.
 		  
  First, plan a little and reduce the amount of fuel in the tank. I ran mine down to about two gallons, which reduced the weight of the tank + fuel to a manageable level for one person to handle. Draining the tank was something I wanted to avoid, as I would be stuck indoors where fumes could turn deadly.
 		  
  Before you raise the car, there's some work to do inside the cabin. The electrical connections to the fuel level sending unit need to be disconnected.
 		  
  You can do this by

 		  
 

 		  
 


 		  
 


 		  
 


 		  
 


 		  
 


 		  
 


 		  
 


 		  
 


 		  
 


 		  
 


 		  
 


 		  
 


 		  
  You'll need to get the car up pretty high. Mine was already raised quite high to drop the motor. The tank need about 12" of clearance, plus you'll need the additional clearance for your body and a creeper. 24" to the bottom of the tank is plenty -- you could do it with less if the tank is empty.
 		  
 


 		  
 


 		  
 


 		  
 


 		  
 


 		  
 


 		  
 


 		  
 


 		  
 


 		  
 


 		  
 


 		  
 


 		  
 


 		  
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     

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