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Sparkplug Type Required Please.... :)

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  • Sparkplug Type Required Please.... :)

    Hi guys

    just a quickie -

    engine info - 1972 GM In Line 4 120hp - Serial Number 3254358

    The manual (clymer) calls for AC CR44N2 - and having searched for an equivalent I have come up with NGK BR6ES

    The ones in it are NGK BPR6ES - which have a protruding end -

    Any advice appreciated please - either correct NGK or Champion would be really useful please.

    Cheers

    Adam

    sigpic

    7 BEAUTIFUL kids, £6.00 in the bank, 5 good lakes nearby, 4 weeks paid holiday, 3 jobs, 2 boats and 1 FANTASTIC wife to share it all with

    Praise be! Life is precious - live it


  • #2
    Re: Sparkplug Type Required Please....

    I like the AC Delco MR43T.

    The NGK I believe should be BR6FS.

    I would never recommend Champion... but that's just me.

    Comment



    • #3
      Re: Sparkplug Type Required Please....

      Mercruiser calls for the AC CR44N, or NGK BR6ES.
      The BPR6ES is basically the same as a BR6ES as far as how it works. The only thing different is the overall plug height and a fixed or removable terminal end on the plug.

      Compare here.
      http://www.ngk.com/more_info.asp?AAIA=&pid=2197 vs http://www.ngk.com/more_info.asp?oth...15614&pid=3150
      Don S.

      sigpic

      Please, no PM's (Private Messages) regarding boat/engine problems.
      That is what the forums are for.
      Only forum/moderator issues will be answered in PM's.

      Comment



      • #4
        Re: Sparkplug Type Required Please....

        Originally posted by Fishermark View Post
        I like the AC Delco MR43T.

        The NGK I believe should be BR6FS.
        Those are the wrong plugs for his engine, he has a 72, and look at his sn range.
        Don S.

        sigpic

        Please, no PM's (Private Messages) regarding boat/engine problems.
        That is what the forums are for.
        Only forum/moderator issues will be answered in PM's.

        Comment



        • #5
          Re: Sparkplug Type Required Please....

          Thanks fishermark

          And Don - cheers buddy - thats the conclusion i came too as well - nice to hear a guru confirm it though.

          I can see how you got it slightly wrong fishermark - the GM I/L4 120 took a different plug up to SN3825578 - then 3825579 on is as you say the BR6FS - it was the P bit and the length i was double checking - but hey mate as I say very grateful for the input

          Cheers guys

          Adam

          sigpic

          7 BEAUTIFUL kids, £6.00 in the bank, 5 good lakes nearby, 4 weeks paid holiday, 3 jobs, 2 boats and 1 FANTASTIC wife to share it all with

          Praise be! Life is precious - live it

          Comment



          • #6
            Re: Sparkplug Type Required Please....

            Oops! Sorry about that. I see that one is tapered and one has the gasket.

            Comment

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