Plug heat range #
Sep 2, 2006 | 01:39 AM
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Plug heat range #
I am using NGK 1299 JR10B plugs in my 11.5:1 stock bore and i am using pump premium with good results but...what effect if any will 1 or 2 heat ranges down in #(9 or8) do? I searched on this subject with limited results so any information will be appreciated.
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MikeyBoyesq
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