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What is the best spark plug for my XJR ?

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Old 07-01-2012, 11:12 AM
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Default What is the best spark plug for my XJR ?

Opinions ?

The kenne bell site says they have tested lots and the Denso U-groove performed well and held up well the longest, longer than iridium tipped.
 

Last edited by WaterDragon; 07-31-2013 at 11:34 PM.
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Old 07-01-2012, 11:18 AM
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Originally Posted by WaterDragon
Opinions ?
Mine is that I'm going to sit this one out and have a beer while watching the fur fly. I vote for the OEM plugs.
 
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Old 07-01-2012, 11:38 AM
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I am a fan of the NGK iridium
 
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Old 07-01-2012, 01:02 PM
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Originally Posted by Mikey
Mine is that I'm going to sit this one out and have a beer while watching the fur fly. I vote for the OEM plugs.
What are the OEM plugs? Why those.

I'm looking for the best performance 1/4 mile wise.

I have the NGK iridium in my wifes XJ8 with no issues.

I was curious if there were things people liked better...

I see Eurotoys sells the densos.
 

Last edited by WaterDragon; 07-01-2012 at 02:11 PM.
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Old 07-02-2012, 11:19 AM
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denso is crap their like NGKs redheaded step child their materials are far less superior than ngk ive always used NGKs in all my cars from my 1200 horsepower turboed LSX trans am too my supercharged jag always worked great for me.
 
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Old 07-02-2012, 02:09 PM
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Which iridium?

Is there a different part number for the supercharged since it is running hotter?
 
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Old 07-03-2012, 10:19 AM
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Why yes, WaterDragon, it different for the supercharged, it is NGK part number 3764 for the XJR

Gee self, thank you.
You are most welcome.
 
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Old 07-03-2012, 02:14 PM
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see folks this is Jeff ^^^^^^ this is jeff on drugs dont be a jeff LOL
 
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Old 07-03-2012, 07:21 PM
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What??? talking to myself is weird?? That way I always have someone to talk to...


No.. I was just posting the correct part number for the plugs in "a creative way"

See, I'm "special"
 
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Old 07-03-2012, 10:13 PM
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Not sure on Jags, but I always liked NGK 1 step colder plugs on all my cars.
 
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Old 10-03-2012, 01:42 AM
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I use these in my XJR they made half a horsepower on the dyno been using them for years now here in Australia they are called Brisk in the US they call them Nology I use the silver ones very happy they lasted for years in my Benz Nology Silver Spark Plugs for direct fire ignitions
 
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Old 10-03-2012, 04:23 AM
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OEM - The dealer is competitive on price too I've found. (NGK Iridium)
 
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Old 10-03-2012, 07:27 PM
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Hi Sean B a completely different subject
I just noticed you live in southport which made me smile as I live in Southport as well on the Gold coast Australia cheers mate
 
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Old 10-03-2012, 08:10 PM
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+1

Originally Posted by Mikey
Mine is that I'm going to sit this one out and have a beer while watching the fur fly. I vote for the OEM plugs.
 
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