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So I had a big build done on my 103.
117” now, CR is 11.3:1 with 640Gear cams.
I crossed referenced the plugs the builder had in there and came back as stock. DCPR7E
They look a little too clean with some tan specks on the insulator.
Im thinking at this level there should have been at least one heat range colder plugs in there.Like DCPR8E...
thoughts?
Last edited by Breakout110; Aug 19, 2021 at 12:52 PM.
Fuel Moto told me to run stock plugs on my Stage IV 120 build @ 11.3:1 compression, same as yours. Your plugs look good. I just changed mine and they looked similar.
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Plug heat range vs mods.
