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XJ XJ8 / XJR ( X308 ) 1997 - 2003

00 XJR spark plugs-replacements?

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Old Jul 27, 2013 | 10:53 PM
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Default 00 XJR spark plugs-replacements?
Given the variety of replacement plugs available in '13- any consensus on what to run in my 00 XJR? Thread review not particularly germane.
 
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Old Jul 28, 2013 | 12:59 AM
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I'm running one step colder Denso U-Groove per advice from Kenne Bell. Their web site says for some reason these lasted longer and performed better than the iridiums.

This is a good quick read:
http://kennebell.net/KBWebsite/Commo...SPARKPLUGS.pdf
 
Last edited by WaterDragon; Aug 1, 2013 at 08:23 PM.
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Old Jul 28, 2013 | 07:44 AM
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NGK Iridiums here.
 
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Old Aug 1, 2013 | 04:48 PM
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Ngk iridium
 
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Old Aug 2, 2013 | 02:54 PM
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NGK IFR5N-10 (The 10 being the gap, of 1mm)

BTW kenne bell quote twinscrew supercharger equipped engines. Jaguar Eaton engines require NGK Iridium.
 
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Old Aug 2, 2013 | 08:00 PM
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Originally Posted by Sean B
NGK IFR5N-10 (The 10 being the gap, of 1mm)

BTW kenne bell quote twinscrew supercharger equipped engines. Jaguar Eaton engines require NGK Iridium.
When I talked to them on the phone they gave me the Denso U-groove part # for my Eaton at 15 psi and suggested the one step colder U-grooves.
 
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