Spark plug type confirmation

[Slider15]

hi,

can someone please verify that NGK BKR7E plugs are correct for my '93 GTS-t coupe.

[beacher1B0]

Yes and No. The "7" is too hot for a stock Rb20. I would go with a "6" if your under 300whp.

[cory]

6 is hotter than 7....higher the number the cooler the plug..... http://www.ngksparkplugs.com/tech_su...k_plugs/p2.asp

[Voodoo_ChildR32]

And usually double the price for colder plugs.


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[Slider15]

Thanks guys, i got the 7's. The car has been sitting for about a year so hopefully changing the plugs and tuning it a bit will fix the misfire and hesitation thats occuring.

[beacher1B0]

6 is hotter than 7....higher the number the cooler the plug..... http://www.ngksparkplugs.com/tech_su...k_plugs/p2.asp

My bad. You guys know what i meant.


Gap the plugs at 1.1mm. Still misfiring - gap at 0.8mm.
Still miss firing - check your coils.