Need Fuel pump hoses tips | FerrariChat

Need Fuel pump hoses tips

Discussion in '348/355' started by Brush, May 25, 2024.

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  1. Brush

    Brush Karting

    Aug 26, 2023
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    Full Name:
    Bruno
    Hi guys,
    since some weeks ai got trouble with my 348GTS. Difficult to start + sometimes rough idle AND sme kind of vibrations when driving + sometimes it absolutely can't go higher than 3000rpm and giving more vibrations and sensation motor stops and start continously.

    I changed the crank sensor without any result.
    I wanted to change the pumps and ordered those of lancia delta.
    The trouble is that the hoses connections on upper side are different (old pump is screwed, new one is just slipped and tightened with a collar). Is there any hoses set we can buy to make it compatible?

    my pump and the new one:
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    thanks!
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  2. m.stojanovic

    m.stojanovic F1 Rookie
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    Dec 22, 2011
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    Miroljub Stojanovic
    There is no "conversion kit" here but it can probably be done using a rubber fuel hose with clamps in place of the original "J" pipe. However, it would probably be unreliable and not worth it when you can get Bosch pumps that will fit at ~ 80 Euro a piece. It is Bosch 0 580 464 997 which you can get, for example, here: 0 580 464 997 - Fuel Pump | Spareto. These pumps are similar to the original ones except that they are 53 mm diameter so, if your original pumps are 60 mm, you will not be able to use the existing pump rubber "gaskets" but these you need to replace anyway. The 53 mm pump gaskets are available from Ferrari parts suppliers.
     
  3. Brush

    Brush Karting

    Aug 26, 2023
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    Bruno
    I think my new pumps are already 53mm models, with applicable rubber gaskets.
    So those pumps you mention are plug and play?
     
  4. Ferrarium

    Ferrarium F1 Veteran
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    Eric
  5. Brush

    Brush Karting

    Aug 26, 2023
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    Bruno
    I had already browsed that topic but as i already got the pumps.. I wondered if there were another solution than buying new one :/
     
  6. Ferrarium

    Ferrarium F1 Veteran
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    Jul 28, 2018
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    I suspect it’s The wrong pump, my 53mm was the same. But if the issue with your new pump is, it has a barb fitting not a threaded fitting just put a hose on and put an oeriker clamp on as page 2 shows to make new lines?
     
    F312PB likes this.
  7. Brush

    Brush Karting

    Aug 26, 2023
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    Bruno
    the problem is i fear a classic rubber hose would be soon destroyed by the gasoline, isn't it?
    And on one end of that hose, there is a special connector/clips if i am not wrong.
     
  8. Brush

    Brush Karting

    Aug 26, 2023
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    Bruno
    before i buy new pumps, is there an easy way to test the debit of the fuel pumps?
    I was thinking about removing connector below fuel fiter, ading a bottle and put contact during 30 sec and check how much there is inside. Would that work? Or do i need to start motor? (and only one bank will be powered of course).
    How much CC should i then find?
     
  9. steved033

    steved033 F1 World Champ
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    Apr 12, 2017
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    some rubber hoses are designed for "in tank" or "submersible" use.

    sjd
     
  10. Manuel.G

    Manuel.G Karting

    Mar 21, 2013
    221
    España - Madrid
    Does anyone know what the difference is between 0 580 464 997 and 0 580 464 990?
     
  11. m.stojanovic

    m.stojanovic F1 Rookie
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    Manuel.G likes this.
  12. Manuel.G

    Manuel.G Karting

    Mar 21, 2013
    221
    España - Madrid
    So the only difference is the flow rate and the diameter? Can either one be installed or does the flow rate have a big impact?
     
  13. m.stojanovic

    m.stojanovic F1 Rookie
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    Dec 22, 2011
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    No, the difference is in the flow rate. Pump 997 has the flow rate of 130 L/Hr which is the same as what the original 348 140317 60 mm Bosch 0 580 254 011 has.

    If you install 110 L/Hr pumps, they may be ok except at full throttle hard acceleration when they may run "out of breath". You can give them a try.
     
    Manuel.G likes this.
  14. Brush

    Brush Karting

    Aug 26, 2023
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    Bruno
  15. m.stojanovic

    m.stojanovic F1 Rookie
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    This is from Gates website:

    "If your in-tank applications and fuel systems cause your hoses to be in constant contact with gasoline or other fuel fluids, you need the Gates Submersible Fuel Hose. Most fuel lines are only designed to handle fuel on the interior of the hose, which can be damaged if the exterior is exposed to fuel."

    Of course, you don't need to buy "Gates" hose but it will have to be a "Submersible Fuel Hose". Google for it.
     
  16. Brush

    Brush Karting

    Aug 26, 2023
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    Bruno
    ok i found the gates one.
    But is my idea correct? Buy those hoses and M10*1 8mm adaptors? And problem is solved.
     
  17. m.stojanovic

    m.stojanovic F1 Rookie
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    Of course you can use those brass adaptors provided the thread M10 x 1.0 is correct. Have you verified it? As I remember, there are no copper washers with the original "push-on" adaptors for the "J" tubes which suggests that the thread is tapered and that that is how the sealing is achieved.
     
  18. Brush

    Brush Karting

    Aug 26, 2023
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    Bruno
  19. m.stojanovic

    m.stojanovic F1 Rookie
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    The original adaptors to which the plastic tubes connect are not plastic but brass or steel.
     
  20. Brush

    Brush Karting

    Aug 26, 2023
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    Bruno
    So you think I can use the copper adapter I mentioned?
     
  21. m.stojanovic

    m.stojanovic F1 Rookie
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    What is important is that, if the original adaptor has tapered thread, your new adaptor should also have tapered thread. Also, the original adaptor may have metric tapered thread or imperial tapered thread (which could be NPT or BSPT) which you have to find out before you by new adaptors. Finding hose adaptors with metric tapered thread may be a bit difficult.
     
  22. Brush

    Brush Karting

    Aug 26, 2023
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    Bruno
    even if i am in europe? :)
     
  23. A348W

    A348W Formula 3

    Jun 28, 2017
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    North Wiltshire, UK
    #23 A348W, May 29, 2024
    Last edited: May 29, 2024
    just a suggestion, why not save yourself a load of hassle and buy the correct pumps?

    with the symptoms you describe of the car’s behaviour Id be putting effort into fault finding! check current pumps work on the bench as they are out, do some tracing on the pump power supplies, sounds like a spurious electrical issue of some description
     
  24. Brush

    Brush Karting

    Aug 26, 2023
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    Full Name:
    Bruno
    because i already have other pumps? And because it would mean also buy the rubber adapter?
    I can't do a lot of test just because i can't lift enough the car and make the tank empty. I currently have 80 liters inside tank so the only way to work on it is giving it to workshop. But they can't keep it and store it during weeks waiting for parts. So i have to find almost every possible trouble cause and solution before bringing it back to workshop again.
     

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