Trident Plug Lead, Carbon Or Copper ?

Discussion in 'Technical Help' started by MICK64, Sep 22, 2021.

  1. MICK64

    MICK64 Active Member

    Sep 15, 2020
    89
    28
    NEW FOREST. ENGLAND
    #1 MICK64, Sep 22, 2021
    One of my plug caps has a corroded connection at the plug end. I wondered if the leads are carbon or copper, as i am not going to pay the extortionate price of a new set. I am going cut the insulation off where it goes into the cylinder, and put a new copper wire through it. I am not sure if doing that might upset the ECU, as it could be a different resistance. Anyone have any input please.
     
  2. Cyborgbot

    Cyborgbot Guest

    #2 Cyborgbot, Sep 22, 2021
    Last edited by a moderator: Sep 22, 2021
    Copper has the highest conductivity rating of all non precious metals and given its more physical properties is almost certainly the material used.

    I’d avoid an unnecessary connections (including solders) in any HT circuit.

    A new set of leads isn’t that expensive is it?

    I found this on the triumphrat website.

    https://www.triumphrat.net/threads/...eir-own-high-tension-spark-plug-leads.649769/

    I thought you were the king of the archives…
     
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  3. MICK64

    MICK64 Active Member

    Sep 15, 2020
    89
    28
    NEW FOREST. ENGLAND
    #3 MICK64, Sep 22, 2021
    I cant fathom the dealer sites, but here is a used set, And i wont be paying anything like that. As for the archives crack, I must have skipped that one. :) https://www.ebay.co.uk/itm/284461612010 I am waiting to hear back on the dimensions of these. https://www.ebay.co.uk/itm/313561442682
     
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  4. capt

    capt Elite Member

    May 8, 2016
    3,050
    750
    western Australia
    #4 capt, Sep 23, 2021
    Aren't the caps screw in and there's just something like Sikaflex glue holding and sealing the joint ?? I replaced the lead on one of my Triumph's , just don't recall which one , used copper lead and no issues , the lead is from the coil !!! So the ECU won't see any changes, as it is only connected to the coil ! It reads the resistance and voltages from the coil's , can't go beyond as coils are an electrical barrier !!
     
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  5. MICK64

    MICK64 Active Member

    Sep 15, 2020
    89
    28
    NEW FOREST. ENGLAND
    #5 MICK64, Sep 23, 2021
    Thank you for that.
     
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