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Thread: Spark Plug Question

  1. #1
    Junior Member Backyard Mechanic ndgcpr's Avatar
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    Default Spark Plug Question

    Hey all

    I just got the spark plugs i ordered from NGK for my 1G-GTE. The problem i have is as follows.



    They are different!!! Yes they are both BCPR6EP-N-8 and yes they are both have NGK R written on them, but the cases and spark plugs look slightly different, that single silver one is one of the 4 in the big box.

    Another thing that concerns me is the yellow box states "Adjust spark plug gap to engine makers' specifications.", the silver "Do not adgust spark plug gap due to possible damage to fine center electrode." I know that you are not meant to adjust these so the different instructions cocern me. The only difference is on the bolt head which has H76S on the yellow box and H52M on the others. Can someone shed some light, are they ok to all go into the same motor?

    Thanks
    Noisy Diff and Gearbox Club of Pine Rivers
    and you thought your car was loud
    The Soarer brought to you by the letter TT

  2. #2
    Toymods V8 Member Too Much Toyota CrUZida's Avatar
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    Default Re: Spark Plug Question

    ALL Iridiums will say do not adjust gap.

    The yellow ones you have are Copper I'd say.
    Peewee
    1985 MZ12 Soarer - 1UZ Powered
    2013 86 GTS

  3. #3
    Junior Member Backyard Mechanic ndgcpr's Avatar
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    Default Re: Spark Plug Question

    with the same part no?
    Noisy Diff and Gearbox Club of Pine Rivers
    and you thought your car was loud
    The Soarer brought to you by the letter TT

  4. #4
    Junior Member Too Much Toyota oldcorollas's Avatar
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    Default Re: Spark Plug Question

    do the centre electrodes look different?
    "I'm a Teaspoon, not a mechanic"
    "There is hardly anything in the world that a man can not make a little worse and sell a little cheaper" - John Ruskin (1819 - 1900)

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  5. #5
    Junior Member Backyard Mechanic ndgcpr's Avatar
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    Default Re: Spark Plug Question

    no they look very similar, both look like the lead out of lead pencils. My guess is that a copper one would be a yellowy copper colour?
    Noisy Diff and Gearbox Club of Pine Rivers
    and you thought your car was loud
    The Soarer brought to you by the letter TT

  6. #6
    Junior Member Too Much Toyota oldcorollas's Avatar
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    Default Re: Spark Plug Question

    i wouldve thought the iridiums where a thinner tip??

    typical iridium/platinum tip




    normal spark plug tip



    which do you have?
    "I'm a Teaspoon, not a mechanic"
    "There is hardly anything in the world that a man can not make a little worse and sell a little cheaper" - John Ruskin (1819 - 1900)

    AU$TRALIA... come and stay and PAY and PAY!!! The moral high horse of the world!

  7. #7
    Junior Member Backyard Mechanic ndgcpr's Avatar
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    Default Re: Spark Plug Question

    definately the top one, just not that long, but it does go to a thinner point

    I can try and take a pic, it just doesn't turn out to well
    Noisy Diff and Gearbox Club of Pine Rivers
    and you thought your car was loud
    The Soarer brought to you by the letter TT

  8. #8
    Toymods V8 Member Too Much Toyota CrUZida's Avatar
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    Default Re: Spark Plug Question

    Is the number on the box the same?

    How much did you pay each?

    Copper ones are normally $3 ea, Plantinums are $15 each.
    Peewee
    1985 MZ12 Soarer - 1UZ Powered
    2013 86 GTS

  9. #9
    Junior Member Backyard Mechanic ndgcpr's Avatar
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    Default Re: Spark Plug Question

    i got them through the local car shop, i went in on sat and ordered them, paid about $120 and they came in today so i went and picked them up.

    Yes they both have BCPR6EP-N-8 on the box and printed on the spark plug itself
    Noisy Diff and Gearbox Club of Pine Rivers
    and you thought your car was loud
    The Soarer brought to you by the letter TT

  10. #10
    Junior Member Too Much Toyota oldcorollas's Avatar
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    Default Re: Spark Plug Question

    simple answer? call NGK and ask
    http://www.ngkspark.com.au/contact.htm
    "I'm a Teaspoon, not a mechanic"
    "There is hardly anything in the world that a man can not make a little worse and sell a little cheaper" - John Ruskin (1819 - 1900)

    AU$TRALIA... come and stay and PAY and PAY!!! The moral high horse of the world!

  11. #11
    Toymods V8 Member Too Much Toyota CrUZida's Avatar
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    Default Re: Spark Plug Question

    P in the end of the name = platinum
    Peewee
    1985 MZ12 Soarer - 1UZ Powered
    2013 86 GTS

  12. #12
    Junior Member Backyard Mechanic ndgcpr's Avatar
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    Default Re: Spark Plug Question

    Quote Originally Posted by oldcorollas
    simple answer? call NGK and ask
    http://www.ngkspark.com.au/contact.htm

    Yeah i guess. Just thought if i go back to the shop or possible ring them they will just say "nah it right" so they don't have any hassels.

    Thanks for the help fella's, will call tomorrow and ask about that other number
    Noisy Diff and Gearbox Club of Pine Rivers
    and you thought your car was loud
    The Soarer brought to you by the letter TT

  13. #13
    Junior Member Automotive Encyclopaedia
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    Default Re: Spark Plug Question

    the gold ones are just the older batch, ngk went to a more silver color about 1 year ago.
    Dave

  14. #14
    jzx100 fan boy Domestic Engineer slide86's Avatar
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    Default Re: Spark Plug Question

    if you have the top type then definetly dont try to adjust them. you can damage the electrode pretty easily
    Quote Originally Posted by The Witzl
    Please visit here, they will have all the answers you need for this "conversion" - www.hot4s.com.au

  15. #15
    Junior Member Backyard Mechanic ndgcpr's Avatar
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    Default Re: Spark Plug Question

    so is old and new batches ok?

    I guess there is no real difference, just would be nice if everythign was exactly the same thats all
    Noisy Diff and Gearbox Club of Pine Rivers
    and you thought your car was loud
    The Soarer brought to you by the letter TT

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