non-operational fuel system in 330 GT 2+2 | FerrariChat

non-operational fuel system in 330 GT 2+2

Discussion in 'Vintage (thru 365 GTC4)' started by StevenD57, Sep 8, 2013.

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  1. StevenD57

    StevenD57 Rookie

    Feb 15, 2009
    15
    #1 StevenD57, Sep 8, 2013
    Last edited: Sep 8, 2013
    I am assisting a friend with resurrecting his exotic car collection after many years of inactive storage. One of the cars is a single headlight series 2 1967 330GT 2+2. We have gotten the car "almost" to the point of starting but the fuel supply system is not functional. The fuel system has not been screwed with or other-wise modified. It still has the original mechanical pump up front on the engine and the original electric clicker pump under the back of the car near the fuel tank. In fact except for one spot under the hood leading to the back of the fuel rail, the whole system still has the original yellow and black fuel hoses.

    We removed and cleaned the electric pump (cleaned the accumulated grease, oil, and dirt off the outside and lightly sanded the surface of the electrical points). This operation got the electric pump to function (runs with a steady clicking now) but it does not pump fuel. I have had Ferrari parts places tell me that parts for this original electric fuel pump are pretty much non-existent.

    I have read a lot about the various problems with these old pumps vis-a-vis the modern ethanol fuel we are getting here in the US now. I am wondering what others have done to get their mid-sixties Ferraris with the similar fuel system to a reliable condition.

    Another of the cars in his collection is a series 1.5 four headlight 330 GT 2+2 with the five speed transmission. This car had a heavily modified fuel system where the mechanical pump had been completely bypassed, and the original points style electric fuel pump had been replaced by a set of twin old style Bendix fuel pumps. To do this they had cut up the steel fuel lines with the banjo connections coming off of the fuel filter canister in the back of the car to connect up the twin Bendix with rubber hoses and hose clamps. This modified fuel system in the four headlight car was also not reliable in the condition we found it. Plus the mounting of the twin Bendix fuel pumps was less than ideal as they had them hung very low under the car where they were VERY close to the top of the one muffler ahead of the rear axle. I ended up replacing the twin Bendix fuel pumps with a modern Carter fuel pump tucked further up under the car away from the muffler and installed a return style fuel pressure regulator. This made the car very reliable to drive.

    In looking at the original but non-functional fuel system in the single headlight series 2 car I am somewhat reluctant to cut up the steel lines in the back of the car to fit a single modern fuel pump but with the hard steel lines running the the electric pump with banjo fittings I know it would be very difficult to fit a modern fuel pump without vastly altering those hard steel lines with the banjo style connections.

    I am looking for suggestions on how to make the fuel system of the single headlight series 2 car be as reliable as the much modified fuel system of the four headlight series 1.5 car.
     
  2. buster bram

    buster bram Formula Junior

    Dec 10, 2005
    439
    mussolini's Garage
    Full Name:
    Sean
    There was a article on this problem with diagrams on vintage section the other week should have all the info there

    Sean
     
  3. StevenD57

    StevenD57 Rookie

    Feb 15, 2009
    15
    I think you are referring to the diagrams I made. If it is the thread I am thinking of, I did those diagrams when I was trying to figure out how the original fuel system worked verses how the modified fuel system on the four headlight car we have was sort of not working.

    If it is a different thread I would really appreciate a link or pointer to that thread.
     
  4. DWR46

    DWR46 Formula 3
    Honorary

    Jun 19, 2012
    2,032
    Honestly, Steven, this was all addressed in the original thread. Rebuild kits are commonly available for both the electric and mechanical pumps that are ethanol friendly. If you go through both cars, and carefully clean out the lines, filters, etc, then rebuild the original pumps, you will be fine. I am not aware of any problems runing these cars with ethanol fuels today, though the gas has to be kept very fresh, and do not let it set in the tanks for any great length of time. The Carter pump you speak of has too high a pressure for the Weber carbs and will just get you into trouble. Just stay original, used mechanical pumps are also very available. If you want to replace the electric, use a Facet #476087. This matches the later Bendix pumps the factory used to replace the Fispa units. It is the same in output and pressure.
     
  5. silvergate

    silvergate Rookie

    Oct 2, 2012
    1
    Are you getting fuel to the electric pump? If not, I would pull the pickup tube from the side of the tank. Its possible it is clogged.
     
  6. NoECUs

    NoECUs Rookie
    Silver Subscribed

    Mar 13, 2005
    38
    Texas
    Full Name:
    William Harrod
    Check the fuel pick-up that extends down into the tank. On my car, the pick-up tubing had split inside the tank - allowing the pump to draw in air. It was difficult to find the problem.
     
  7. coryh

    coryh Karting

    Nov 26, 2011
    104
    Very good point!
     
  8. DWR46

    DWR46 Formula 3
    Honorary

    Jun 19, 2012
    2,032
    Over the years, I have seen a number of split pickup tubes.
     
  9. ArtS

    ArtS F1 World Champ
    Owner Silver Subscribed

    Nov 11, 2003
    12,692
    Central NJ
    For additional DIY help, go to tomyang.net there are detailed walkthroughs of the fuel system and rebuilding each part.

    By the way, which serial numbers are the cars?

    Regards,

    Art S.
     
  10. anthony moody

    anthony moody Rookie

    Apr 16, 2011
    6
    Jakarta, Hong Kong, Oxford
    Full Name:
    anthony moody
    Can anyone recommend the best source for a FISPA fuel pump rebuild kit for a 250? Thank you.
     
  11. coryh

    coryh Karting

    Nov 26, 2011
    104
    I got mine from Goeff Ohland at Partsource in Camden, Maine.
     

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