Will changing to a cooler spark plug effect NA power?

Cerwin Vega Fan

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Join Date: May 2004

Posts: 252
#1

Will changing to a cooler spark plug effect NA power?

01-07-2005, 03:31 PM

I know if you run any kind of nitrous are you suppose to run a cooler plug. My question is when your not on the juice does the cooler spark plug weaken NA performance?

Thanks

1995 Camaro Z28 Convertible.
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Injuneer

Registered User

Join Date: May 2003

Posts: 4987
#2

01-07-2005, 04:27 PM

Running a colder plug will not reduce power. The exception would be running a plug so cold that it "fouls" with fuel during low load operation. In general, one step and probably even two steps colder will not cause fouling in a modern EFI setup. With a carb, it can be more of a problem.

Fred

381ci all-forged stroker - 10.8:1 - CNC LT4 heads/intake - CC solid roller - MoTeC engine management - 8 LS1 coils - 58mm TB - 78# injectors - 300-shot dry nitrous - TH400 - Gear Vendor O/D - Strange 12-bolt - 4.11's - AS&M headers - duals - Corbeau seat - AutoMeter gauges - roll bar - Spohn suspension - QA1 shocks - a few other odds 'n ends. 800HP/800lb-ft at the flywheel, on a 300-shot. 11.5 @ 117MPH straight motor
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