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What to gap TR6 Plugs to - H/C No N20

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Old 07-03-2009, 01:50 AM
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Default What to gap TR6 Plugs to - H/C No N20

Alright guys,

so I've searched a bit.. Keep in mind car is N/A, NO N20 or Forced Induction.

I have sitting in front of me, an NGK TR6 & MSD Wires package. I currently have TR55's in the car. I'm wondering, what should I gap these TR6's to? My car has full bolton's, heads, cam, and more.. I'm well over 400RWHP, which is why I went one heat range colder to these plugs.

I've heard some people gap these at .045 for no N20, and also a lot for .042 .. I forget what they come gapped at, and It's too late to run downstairs to find the gapping tool.

Thanks for any help fellas.
Old 07-03-2009, 08:36 AM
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I gapped them to .042 and the car seems to be running well. Mods, you can lock this if you'd like to.




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