250 SWB sparkplug wire terminals | FerrariChat
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250 SWB sparkplug wire terminals

Discussion in 'Technical Q&A' started by AndruetBiche, Oct 8, 2006.

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  1. AndruetBiche

    AndruetBiche Formula Junior

    Oct 7, 2006
    427
    #1 AndruetBiche, Oct 8, 2006
    My packard 440 wires are fine but my end terminals need replacing. I presently have an end that is shaped like a dogs leg. Is this original? What type (straight?) and brand do you advise? Also was wondering what plug is best for street driving? I used to use NGK now I'm on AC. My engine is a normal 61 comp motor with 9.4 comp and 40 DCL/6.
     
  2. Motob

    Motob Formula 3
    Professional Ferrari Technician

    Nov 11, 2003
    2,389
    Frederick, Maryland
    Full Name:
    Brian Brown
    #2 Motob, Oct 8, 2006
    The original ends on a 250 SWB are straight with black rubber insulators.
    NGK plugs work best for us, B6ES.

    Brian Brown
    Patrick Ottis Co.
     
  3. robertgarven

    robertgarven F1 Veteran
    Owner

    Feb 24, 2002
    5,322
    Ventura, California
    Full Name:
    Robert Garven
    #3 robertgarven, Oct 9, 2006
    250 SWB! Bring it on over I will fix them for you!!

    :)
     
  4. AndruetBiche

    AndruetBiche Formula Junior

    Oct 7, 2006
    427
    #4 AndruetBiche, Oct 9, 2006
    Thanks Brian
    On the same topic: A number of people have used an extra washer/spacer on the sparkplug because of interferance with the head - what do you know about this?
     
  5. robertgarven

    robertgarven F1 Veteran
    Owner

    Feb 24, 2002
    5,322
    Ventura, California
    Full Name:
    Robert Garven
    #5 robertgarven, Oct 9, 2006
    If you decide to replace the wires I used these:

    http://www.magnecor.com/magnecor1/files/7mm-copper-conductor.pdf

    I am running the smae spark plugs Brian mentioned and running similar wire & ends on my gt4 and have had great luck. Even though the wires look good sometimes it is nice to get new ones, checking the attchment to the distibutors etc. Dont forget to fold over the wire where the screw goes in as it inhances the conection.

    Rob

    Can you post a pic of the car?
     
  6. Motob

    Motob Formula 3
    Professional Ferrari Technician

    Nov 11, 2003
    2,389
    Frederick, Maryland
    Full Name:
    Brian Brown
    #6 Motob, Oct 9, 2006
    With the NGK B6ES you shouldn't have to use an additional spacer or washer when installing the spark plugs.

    We use the extended tip plugs (NGK BP6ES) on the later cars (330's), but the ground electrode sometimes fouls on the cylinder head casting on the 250 motor.

    I would caution you about using a spacer, as this changes the heat path of the spark plug and may cause it to act as a hotter plug.

    Brian
     
  7. f355spider

    f355spider F1 World Champ
    Owner Rossa Subscribed

    May 29, 2001
    18,054
    USA
    #7 f355spider, Oct 9, 2006
    Another good source for Ferrari wires is www.kingsborne.com Also good for parts too, like the plug ends. I am uncertain if they carry the correct ones for early Ferraris, but they do have them for the later Ferraris (Beru brand connectors). Incredibly reasonable prices for such high quality product.
     
  8. ASU SAE

    ASU SAE Karting

    Aug 8, 2004
    59
    CA
    Full Name:
    T
    #8 ASU SAE, Oct 10, 2006
    Beru uses Souriau connectors. Deutsch connectors are also of high quality, too.

    Tim
     

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