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Spark plug gap question.

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Old Jul 25, 2016 | 01:54 PM
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Spark plug gap question.
Doing the plugs and coils in my 04 turbo cab. I run gt28r turbos with a tune. I bought the Bosch fr6ldc plugs. They come gapped at .036". I have read some people say run them at that but the factory gap is different.
Thoughts? What do you all run?
Put them in and go or re gap them?
 
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Old Jul 25, 2016 | 01:57 PM
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.25 gap
 
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Old Jul 25, 2016 | 02:09 PM
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Originally Posted by 32krazy!
.25 gap
.025?
 
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Old Jul 25, 2016 | 02:12 PM
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Originally Posted by hodie21
.025?
Yes fat fingers!
 
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Old Jul 25, 2016 | 02:17 PM
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Ok. Just means I have to remove all my plugs and coils again. I did the job then read the plug package.
 
Last edited by hodie21; Jul 25, 2016 at 02:25 PM.
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Old Jul 25, 2016 | 03:09 PM
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Very strange. fr6 should have came gapped around .025-.026. I just installed a set over the weekend and all were in that area. Definitely not .036.
 
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Old Jul 25, 2016 | 05:02 PM
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.034-.036
Must measure with a wire gauge...they come 'right' out of the box for most cars
 
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Old Jul 25, 2016 | 05:29 PM
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I installed mine straight out of the box and no misfire for 1000s of kms with my gt28s and tune.
 
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Old Jul 26, 2016 | 01:04 AM
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OEMs straight out of the box on a built 3.8L. Zero issues, ever. Don't overcomplicate it..
 
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Old Jul 26, 2016 | 01:12 AM
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Not OEM but straight out of the box too.
NKG PFR7B. If your car is tuned...thats the spark plug to use.
 
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