Z400 Spark Plug???

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Mar 23, 2007 | 10:57 AM

JkAss

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Z400 Spark Plug???

Which Spark plug would be best for my 2006 LTZ400 at sea level/ So Cal desert, the CR6E, CR7E, CR8E or the CR9E? Thanks in advance.

Mar 23, 2007 | 03:49 PM

DVXDUDE

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Z400 Spark Plug???

whats your manuel say??? it came with the cr7e right???

i've ran cr8e before, got a 7e in right now though

i would stick to the 7-8 area unless told differently

Mar 23, 2007 | 07:20 PM

mucky

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From: Phoenix

Z400 Spark Plug???

it came with the 7e in it, if you change to a higher compression then use the 8e for the higher octane fuel, just remember the higher the number the colder the plug

Mar 28, 2007 | 01:07 PM

kawiking

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Z400 Spark Plug???

why 8e for higher compression ??

Mar 28, 2007 | 06:51 PM

theCATman

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From: WI

Z400 Spark Plug???

Because the higher compression is building more heat. So, a colder plug will help out with any possible knock.

Mar 28, 2007 | 08:38 PM

kyledc18

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Z400 Spark Plug???

if your going to be doing a lot of high speed riding use the cr 8
i also used one of those new fancy plug from ngk in my z, iridium i think there called, it worked good