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Thread: Spark Plugs?

  1. #31
    CelicaSupra.com Member DreadyDiggs's Avatar
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    Quote Originally Posted by cdr_913 View Post
    the manual i have for a 79-92 Celica Supra (Haynes) says to not use platinums
    My Haynes Manual page 1-3

    Spark Plug Type
    1983-1986: ND P16R or NGK BPR 5E-P11

    TOYOTA
    SUPRA

    YEAR- 1984
    ENGINE TYPE- L6
    LITER- 2.8
    CC- 2754
    ENGINE DESIGNATION- 5MGE
    STANDARD PLUG NO- W16EXR-U
    STANDARD PLUG STOCKNUMBER- 3031
    PLATINUM PLUG NO- P16R
    PLATINUM PLUG STOCKNUMBER- 3004
    IRIDIUM LONG-LIFE PLUG NO -
    IRIDIUM LONG-LIFE PLUG STOCKNUMBER -
    IRIDIUM POWER PLUG NO- IW16
    IRIDIUM POWER PLUG STOCKNUMBER- 5305
    GAP- 0.044
    That taken from a Denso website search for our plugs. Of course the NGK plug is also a platinum...Either you misread or Haynes owes you money for giving you a book with misinformation

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  3. #32
    CelicaSupra.com Member do562000's Avatar
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    Bosch is a bad brand? damn i knew i sould of wait till they got somein else in stock or wint else were oh well i guess i run them and change them out win i change my oil in 7m

  4. #33
    CelicaSupra.com Member gteduck's Avatar
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    i've been using NGK LASER PLATINUM, got some DENSO PLATINUMS to go in next time(got a good price).
    Just use what toyota recommend, i think they know best!
    some sites i found, first one is very interesting, check them out . a couple will tell you what you need in a few different brands. http://www.aa1car.com/library/sparkplugs_for_dis.htm
    http://www.carsparkplugs.com/
    http://www.densoaftermarket.com/sparkplug.php
    http://www.densoiridium.com/faq.php
    Last edited by gteduck; 02-18-2010 at 01:12 PM. Reason: typo to many http's

  5. #34
    CelicaSupra.com Member gteduck's Avatar
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    Last edited by gteduck; 02-17-2010 at 03:33 PM. Reason: fogot to take http// out wen i pasted ,,doh!!

  6. #35
    Member J3wman's Avatar
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    iridium ftw
    " and the heavens opened and the trees lifted forth and came a voice on high proclaiming, my children go not forward seeking clear tail lights and a cool air intake. Follow the way of the lord and find in your heart forged pistons and share with me postive pressure and dirty thirds" Luke 11:11

  7. #36
    Nut sucker
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    Well.. ive got about 250 spark plugs left out of about 400 I got recently. Free of course. I had NGK LASER IRIDIUMS in my car that were old, but not badly worn, I replaced them with BOSCHE 4 point Platinum plugs. They worked better than the plugs that were in it, but of course those plugs were used. I threw the plugs in because I had them laying around and out of the 400 plugs were some of the only ones that would fit 6mge.
    I personally dont worry much about it on an N/A engine unless its an aircooled VW and I definitely recommend Copper.... and if this was a built turbo motor, id go copper, but hey, what do I know.

  8. #37
    CelicaSupra.com Member 82toy's Avatar
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    Have a set of plus4s in since 2001. daily driver in summer, great gas milage(24-28) has never left me stranded
    Lead,Follow,or Get the hell out of Way

  9. #38
    CelicaSupra.com Member Donn29's Avatar
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    Quote Originally Posted by DylanM View Post
    Burn your haynes manual
    x2
    WTF?

    I use standard Plats or Coppers, and only NGK.
    86 Black MA67: 87 7M, 300hp, no shit! 84 Brown MX63: It's a Dork, not Donk!
    Check out some 7M Supra Videos!
    Links: My 7M-GTE swap guide Electrical FAQ 85 MA61 TEWD 86 MA61 TSRM 87 MA71 TSRM 90 MA71 TSRM
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  10. #39
    CelicaSupra.com Member supkar's Avatar
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    I went to copper NGK and felt the performance difference. I never went back.
    .035 gap
    But when they go, they really go and they're cheap to change.
    I really think Toyota went platinum for longevity reasons.
    83-Red P-type , 6M,. LJM strut-bar, RC intake,Thorley header,Tenzo 17" wheels, cross-drilled rotors, Eibach springs, KYB shocks, 85 hatch and int., 82 header panel=Frankenkar

    87 4 Runner, White, 22RE, 302K on original motor, still strong

    "This car is so loud , I heard you before I saw you!" said the nice policeman.

  11. #40
    CelicaSupra.com Member DreadyDiggs's Avatar
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    Copper is a better conductor than platinum, but platinum is harder than copper and has a higher melting point.

    So that's the trade off. You either get better conductivity but for a shorter amount of time normally, or you get less conductivity for a longer amount of time.

    For the price of spark plugs, knowing these facts here and knowing about electricity, ALTHOUGH I'm all for using OEM products as much as possible, I do think my Supra will end up with good ol' Copper plugs when I do it's first tune up under my ownership.

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