Correct spark plugs??

[fasteddie]

I have spent the last hour trying to find the correct plug # and all I find is the upgraded CR10s
but what is factory for a 09 nytro? will CR8E be ok?

 

[MrChetStuart]

Factory plugs are CR9E. I have no idea about the CR8E one way or the other.

 

[Nytro94]

CR9E is a hotter plug than CR8E always remember that, the higher the number the hotter plug. Unless it is Champion.... Champion is the complete opposite of all the other spark plugs names.

 

[nydiver]

CR9E is the stock NGK as stated and its a basic, normal plug. Autozone stocks the NGK 6263 which is the same as the 9e for $4 a plug

Here's a cross chart if you want to buy another brand

http://www.sparkplug-crossreference.com/convert/NGK_PN/CR9E

 

[canoehead]

NGK Spark Plug Heat Rating
The spark plug heat range has no relationship to the electrical energy transferred through the spark plug. The heat range of a spark plug is the range in which the plug works well thermally. The heat rating of each NGK Spark Plug is indicated by a number; lower numbers indicate a hotter type, higher numbers indicate a colder type. - See more at: http://www.ngksparkplugs.com/about-ngk/tech-talk/spark-plug-basics#sthash.S2Mj6xDH.dpuf

 

[wowchad]

CR9E is the stock NGK as stated and its a basic, normal plug. Autozone stocks the NGK 6263 which is the same as the 9e for $4 a plug

Here's a cross chart if you want to buy another brand

http://www.sparkplug-crossreference.com/convert/NGK_PN/CR9E

Thanks for posting that chart, it's a good one to bookmark.
So again standard factory plugs are CR9E, but a lot of users run the CR10/ CR10EK...why is that, what's the benefit?
I found them on eBay for $5.50 so I'm thinking I can't go wrong for the price & I'll be getting a "premium" spark plug.
However CR9EHIX are the Iridium replacement and those are just over $6.50 each so that's another good option. CR9EHIX-9

Chad

 

[canoehead]

The CR10EK is a multi-ground electrode, in other words dual electrode vs. 1. Multi-Ground Electrodes Improve Ignition Capabilities and are Less Sensitive to Increased Voltage Requirements Due to Gap Growth.

 

[wowchad]

In typical wowchad fashion I over ordered so if anyone needs some... hmu

 

[radianguy]

CR9E is a hotter plug than CR8E always remember that, the higher the number the hotter plug. Unless it is Champion.... Champion is the complete opposite of all the other spark plugs names.

I thought the 8 would be a hotter plug than 9?

 

[canoehead]

NGK Spark Plug Heat Rating
The spark plug heat range has no relationship to the electrical energy transferred through the spark plug. The heat range of a spark plug is the range in which the plug works well thermally. The heat rating of each NGK Spark Plug is indicated by a number; lower numbers indicate a hotter type, higher numbers indicate a colder type.