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Old 03-30-2006, 06:48 PM   #1
Benesesso
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Default Which NGK Spark Plugs

What's the word on which NGK's to use in a turbo--platinum or the newer iridium?
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Old 03-30-2006, 06:58 PM   #2
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Iridium is better IMO
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Old 03-31-2006, 12:04 AM   #3
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Iridium is better, and there are two types available. IF you go to Supra sport they sell both the difference is;

to quote Charles Britz of SupraSport.com "The difference is in the heat range. BCPR5EIX11 3306 is a hotter plug meaning that there is more electrode exposed. You can use this plug with basic performance upgrades but when turning up the boost the BCPR6EIX 5689 is a better choice because it is colder. With the higher temperatures with a turbo charged engine could cause the hotter plug to fail or cause preignition."
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Old 03-31-2006, 02:51 PM   #4
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Picked up a set of NGK Iridiums yesterday. $6.95 ea.
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