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Plug gaps

This is a discussion on Plug gaps within the External Engine forums, part of the LSx Technical Help Section category; I know this has been asked countless times already cause i did a search on it, but im still confused ...

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    slammed RAWPWR3's Avatar
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    Plug gaps

    I know this has been asked countless times already cause i did a search on it, but im still confused on what gap to get? From what ive read the NGK TR55IX(iridium) is the most recommended brand, and these are the ones i would like to get, but i dont know what gap! Different stores have different gaps. Some are.050, others are .060 etc. Also from what i understand, .060 is too big of a gap, but then i also read that its recomended .052-.060 is the required gap. So wouldnt .050 be too small, someone please help, there are so many different choices im just looking for a straight anwser! My mods are in the sig, and the only reason im looking for plugs is cause im gonna be installing headers soon.

    Thanks,Yulian

    '01 M.R.M. TA A4:
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    Yeah, but which gap do i choose? And thanks for replying.

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    Senior Member INMY01TA's Avatar
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    Stock gap is .060. People like to close the gap a lil as they raise the hp level. You can gap anywhere between .050-.060. Use NGK tr55 (part#3951).

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    Senior Member INMY01TA's Avatar
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    If you want to pay almost $60 for spark plugs then get those irridiums online. The tr55's can be bought at Advance auto for about a buck and a half each. Copper is a better conductor of electricity.

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    Senior Member INMY01TA's Avatar
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    Quote Originally Posted by KageSS View Post
    What?
    7x8=56 +shipping=$60 plug change.

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    Alright, thanks fellas.

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    slammed RAWPWR3's Avatar
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    Hey "kagess" I saw in youre pics that youre running an 80mm BBk Tb. Did you have to trim down youre smooth bellows?

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    Yeah i thought so, but yore also runnig the stock maf, so maybe it fit better for you. Right now i just got the factory accordian style thing in place until i trim down my smooth bellows too.

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    Oh o.k., thats cool, it looked stock. I currently have the slp 85mm maf.
    Oh yeah, and one more question 'bout the plugs, will they make the motor ping at WOT? I read that when i did the search.

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    Lol...alright man thanks alot, i appreciate it. Tomorrow ill stop by the local auto-parts and see if i can get me some.

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    Later

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    At least you are not running NGK TR4's with .080 gap running a 65,000 volt coil system.....

    Stock heat range is TR-55(IX) which most dealers gapping them at .060 due to their superior conductivity. Iridiums are often mistaken to have properties of Platinums, which is false. I have seen Juiced, Blown and stroked engines using Iridiums with no problems, unlike Platinums which kills them under those circumstances. Iridium alloys have greater conductivity than Copper as well. -Tim

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    Quote Originally Posted by INMY01TA View Post
    If you want to pay almost $60 for spark plugs then get those irridiums online. The tr55's can be bought at Advance auto for about a buck and a half each. Copper is a better conductor of electricity.
    NOPE..IRIDIUM's are the best conductor/plugs on the market today. They use them in Pro-Stock as well as Top Fuel...
    99 WS6 M6 NBM !Cags,!Cats,Vinci/Crane,Hurst,Detroit TruTrac,3:73,31 Splne,Edel.Race LT's,ORY,QTEC,Flow,ARP,Percy,MSD,SLP,AC/DELCO,Bosch,GMPP,Cntrfrce DF,Htchkiss,Susp.Tech,Lakewood,285's,Bilstein,Pro-kit,SLP,RK Sprt,A/Meter,Red Optima,Magnaflow S/S Tips,Hd Pins,Tint,Fire.Ex,[*4 Hot Rod Power Tours*]

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    Senior Member INMY01TA's Avatar
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    Quote Originally Posted by NHRAMAN View Post
    NOPE..IRIDIUM's are the best conductor/plugs on the market today. They use them in Pro-Stock as well as Top Fuel...
    Top fuel cars do not use iridium plugs.

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