308 Plug wire extendors, resistance or not | FerrariChat
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308 Plug wire extendors, resistance or not

Discussion in 'Technical Q&A' started by Sean F., Jun 5, 2006.

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  1. Sean F.

    Sean F. F1 Rookie

    Feb 4, 2003
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    Sean F
    #1 Sean F., Jun 5, 2006
    I posted this in the 308 section but I probably should have put it here.

    1977 308GTB w/ points still active.

    I know their are two types but which should the early carb cars have?

    I pulled the plugs out of my car last night to check them after my carb. rebuild. I noticed that I have two different types of plug extentions. One set has almost no resistance (and a continuity tone) the other set has lots of resistance (20K) and no continuity tone on the volt/ohm meter.

    Which one am I supposed to have?
     
  2. NYCFERRARIS

    NYCFERRARIS Formula 3

    Mar 2, 2004
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    #2 NYCFERRARIS, Jun 5, 2006
    on the outside body...there are two types; black and red...(black is for the 2V cars I think..red for 4v and 328...not 100% sure though)
     
  3. Ken

    Ken F1 World Champ

    Oct 19, 2001
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    #3 Ken, Jun 5, 2006
    A cheap meter may read the resistance plugs as "open" i.e. no continuity.

    If your engine is your music, get the racing wires (solid copper I believe). If you want to hear the radio, use those 'carbonized textile & fiberglas conductors', with silicone rubber jacket (resistance plugs). I assume your owners manual will tell you what the car was actually designed for I would would bet the farm is the resistance kind.

    Ken
     
  4. Sean F.

    Sean F. F1 Rookie

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    #4 Sean F., Jun 5, 2006
    What I've found from F_UK site is that red is 2v and black is 4v. I suppose since a few of them are cracked I should just order some new ones. I just wanted to know if they should have resistance or not.
     
  5. BigTex

    BigTex Seven Time F1 World Champ
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    #5 BigTex, Jun 5, 2006
    Check that..my original 2Vs are all black, bro.....bring your meter over here!
     
  6. f355spider

    f355spider F1 World Champ
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    #6 f355spider, Jun 5, 2006
    Yup, my 78 308GTS had black too...and when I replaced the with new ones from T.Rutlands, they sent me black...but not sure if they had resistance or not...never checked. But I DID have radio interference...and switching to resistor NGK plugs corrected that.
     
  7. Verell

    Verell F1 Veteran
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    May 5, 2001
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    Verell Boaen
    #7 Verell, Jun 6, 2006
    The red have internal resistors. I dissected one that had a bad arc-thru a few years back & posted it to the old fchat. It's still there somewhere.

    Mine measured open with an ohmmeter, but work fine. If I remember right, the internal resistor measured ~2K Ohms after the dissection.
     
  8. Sean F.

    Sean F. F1 Rookie

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    #8 Sean F., Jun 6, 2006
    Well I ordered some from Dennis McCann, PN 116613 according to Ferrari.oweners web site. They are red.

    They should be here in a few days and when I get them I'll check and post it for future reference. New plugs and wires will be installed as well.
     
  9. NYCFERRARIS

    NYCFERRARIS Formula 3

    Mar 2, 2004
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    #9 NYCFERRARIS, Jun 6, 2006
    curious about price for set of 8..what plugs you gonna run with..
     
  10. Sean F.

    Sean F. F1 Rookie

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    #10 Sean F., Jun 6, 2006
    $8 each. NKG BP6ES gapped to .035". Accel 4040R wires per this thread for new wires http://www.ferrarichat.com/forum/showthread.php?t=39303

    I'm also going to go to a local guy FCA here who has a dwell meter and knows how to set the points for me. He said to "bring it over" at the last meeting and he'd help me so I am. I have no idea when the last time they were checked.

    I know the timing is correct however, but we'll check that too.
     

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