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360 360 fuel pump replacement DIY question

Discussion in '360/430' started by Djack005, May 30, 2025 at 7:19 PM.

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  1. Djack005

    Djack005 Karting
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    Dave Jackson
    #1 Djack005, May 30, 2025 at 7:19 PM
    I’m gonna be replacing my fuel pumps in my 2003 360 spider. One of them started leaking and the other one looks like it’s original, so it’s time to do them both! have new fuel pumps, locking collars and gaskets from Eurosspares. Looks like a pretty easy job, but I have one question for the group.

    Somewhere on this forum I noted that it’s recommended to torque the collar to 60 Newton meters. Not sure how I would go about doing that. Also, that seems like a lot of torque for a thin plastic collar. For those of you who’ve done the install, how did you torque the collar?

    I was thinking of just white knuckling it. Any other suggestions or pointers on getting the job done?


    Thanks
     
  2. hessank

    hessank Formula 3
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    #2 hessank, May 31, 2025 at 7:17 AM
    I believe it is installed snug and not too tight or else the next time will involve a lot of swearing and eventual drinking.
     
  3. Kevin Rev'n

    Kevin Rev'n Two Time F1 World Champ
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    #3 Kevin Rev'n, May 31, 2025 at 4:28 PM
    When you remove the old one you should be able to take it apart and get a "feel" for the torque. Also everything on that system has torque stripes/marks so if you mark your tight spot you should be able to see if it is moving later.
     
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  4. EWR

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    #4 EWR, May 31, 2025 at 5:23 PM
    Isn't "eventual" drinking "inevitable" when doing any repair? ;)
     
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  5. gvanrenterghem

    gvanrenterghem Karting

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    #5 gvanrenterghem, Jun 3, 2025 at 7:07 AM
    Hey, first make sure that you fit a new rubber seal on each of the pumps, then also make sure you use a new version of the nut ring. To close it properly, make sure you push quite hard down on the pump with your hand going through the hole of the ring, then while applying constant pressure, screw the ring hand-tight until you cannot go further by hand. Then take a flat screw-driver with large face, a rubber mallet, and hit "lightly" a couple of times the screw-driver while it seats on one of the groves of the ring. That should be sufficient to (1) get a proper seal without fuel fumes going through and (2) not make any mechanic call you names when they try removing it again in 20 years time.
     
  6. yelcab

    yelcab F1 World Champ
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    #6 yelcab, Jun 3, 2025 at 9:01 AM
    20 years?
     
  7. gvanrenterghem

    gvanrenterghem Karting

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    #7 gvanrenterghem, Jun 3, 2025 at 9:14 AM
    20 years as they are 20+ years old and personally I only replaced my 25 year old pumps because of the risk of cracking/leaking/fire, but technically my original pumps from 2003 were working fine (except the plunger who was stuck). Assuming replacing them after a minimum of 20 years does not seem unreasonable, and since they only cost me EUR 350 to replace the pair (including seal and ring), it is a cheap price to pay to have peace of mind.
     
  8. yelcab

    yelcab F1 World Champ
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    #8 yelcab, Jun 3, 2025 at 1:18 PM
    I'm saying they don't last 20 years ...
     
  9. RedNeck

    RedNeck F1 World Champ
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    #9 RedNeck, Jun 3, 2025 at 2:47 PM
    Eventual? sounds like yall are doing it out of order.
     
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  10. gvanrenterghem

    gvanrenterghem Karting

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    #10 gvanrenterghem, Jun 4, 2025 at 1:36 AM
    No Offence but this is part of the urban legend that Ferraris are unreliable and use poor quality parts.
    I removed my "19 MAR 2001" fuel pumps (see picture) just as a safety measure to replace them by the improved version with no risk of cracking, but my 23 year / 48,000km old pumps were (1) working totally fine and (2) no cracking plastic anywhere.


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