4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

Spark plug recomendation.

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Old 11-04-2007, 07:23 AM
  #11  
iraziel
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Default RE: Spark plug recomendation.

ORIGINAL: monkeydude3

unless you have forced induction get the factory specififed motorcraft plug.
Everyone's making recommendations accrording to NA, but what about F/I? What spark puls to go with then?
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Old 11-04-2007, 09:38 AM
  #12  
black96white
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Default RE: Spark plug recomendation.

i had bosch platinum on my gt and everything was just fine but i was having a mis fire (turned out to be a feul injecter) and replaced them with bosch plat irideum you don't have to gap them ,and no sparkknock but it's all your preference
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Old 11-04-2007, 10:44 AM
  #13  
iraziel
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Default RE: Spark plug recomendation.

i just did a few look-ups, looks like Denso or NGK is the way to go...but Denso seems to have better reviews withproduct longevity and gains (if the tests arn't bogus...23-25hp w/ f/i some say). Doubting the gains, but multiple users confirm Densos' spark plugs holdin up well to 100k miles....over exaggerated perhaps?
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Old 11-04-2007, 11:34 AM
  #14  
01redstang
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Default RE: Spark plug recomendation.

MOTORCRAFT OEM 100%

[IMG]local://upfiles/83012/76E530C0DEAC46958A546EA08CF2B1DD.jpg[/IMG]

[IMG]local://upfiles/83012/89519DBAC9024101B01335704CBC5D46.jpg[/IMG]
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Old 11-04-2007, 11:38 AM
  #15  
Yellow Fever
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Default RE: Spark plug recomendation.






NGK TR6's are good plugs.


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Old 11-04-2007, 11:41 AM
  #16  
ShadowDrake
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Default RE: Spark plug recomendation.

NGK or motorcraft.

I changed mine to NGK TR55... I think. Stock heat range, copper core. Gapped to stock. Works great.
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Old 11-04-2007, 11:42 AM
  #17  
StylinM6s
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Default RE: Spark plug recomendation.

I'm getting my plugs changed soon to NGK tr55. hear good things about them on svtperformance.com plus it's $1.98 a plug
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Old 11-04-2007, 11:53 AM
  #18  
Yellow Fever
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Default RE: Spark plug recomendation.






Ijust had this conversation with Jim Jr. from JDM.
He recommended NGK TR6's gapped at .032
for my blower set up.



[/align]
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