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PRC stage 2.5 59cc heads

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Old Feb 7, 2020 | 05:59 PM
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Default PRC stage 2.5 59cc heads

I am bumping up my nitrous in the spring and adding a 102mm plate TB and intake I have used the TR6 NGK in the past but I was wondering on what would be a good plug to use this the 59cc heads and bumping the nx to 150-175 from 125
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Old Feb 8, 2020 | 05:53 AM
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NGK BR7 seems to be what everyone jumps to now. I have them and I have driven on them for a while no issues
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Old Feb 12, 2020 | 08:21 PM
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These plugs work great with the nitrous.

NGK Standard Series Spark Plugs BR7EF/3346
https://www.summitracing.com/parts/ngk-3346/

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Old Feb 15, 2020 | 10:28 AM
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As said above, a BR7EF should be fine with that level of nitrous. Just read the plugs and see if there is too much heat in them.
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Old Feb 15, 2020 | 01:52 PM
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BR7 for sure. colder obviously and non projected.
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