Spark Plug Experience

pkucan · 08-04-2010, 04:16 PM

I plan on going with Champion but which ones for an 02 4.7L?

Copper
Single Plat
Double Plat
Iridium

What works for you?

Thanks

N8ECH · 08-15-2010, 07:37 PM

PKU:
Champion Copper RC12MCC4 (if I remember correctly) worked fine for me.

When I changed my oem set at 30k, there was plenty of life left.

Don

2000izusu · 08-17-2010, 09:12 AM

i would go with copper. its what came in it from the factory, and the motor was designed to run on them! mike

puffin3 · 02-18-2011, 05:39 AM

Quote:

Originally Posted by 2000izusu

i would go with copper. its what came in it from the factory, and the motor was designed to run on them! mike

Is it easier on the engine and/or more fuel efficient to run hotter or colder plugs and which numbers mean which are hotter/colder? Thanks

N8ECH · 02-19-2011, 08:37 PM

Puffin:

Changing the heat range of your plugs will not gain you anything unless you have a modified motor.

Folks with superchargers sometimes run a colder plug to help prevent pre detonation from excessive cylinder temps.

Your best bet is to go with the OEM Champions which can be had for ~$18 a set.

Don

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