CR7E??? Spark Plug

[Sand84]

This is all they had.  I have a CR9E to..  Which one is better to run?

[Colorado700R]

Stock is Cr 8E, the 9 has better heat charcteristics

[Livingmylife93]

I always end up running CR9E because thats all autozone normally has...

[Kenny]

CR9E is fine..... it is a colder heat range than the 8. As long as you don't foul plugs, it will work fine

[Krandall]

That means you got your motor back today?!

[Sand84]

Yes I did Randy


So its a no go on CR7E   Dont use?

[Colorado700R]

Correct,a higher performance motor ahould run a colder plug (according to the NGK website anyway)

[kyledvor61]

I run the 7 in the yfz because thats all I had laying around

[Sand84]

Ok well I thought i had some 9's but all I got is 7's so im gonna take them back and get some 9's

[Peelz]

I have a 9 raptor plug in my lawnmower now. Runs great. It shot the stocker out of it the other day. Must have came loose, the threads were sheared off.

[unclesharty]

Its always safer to run a colder plug than a hotter one, unless your having a problem with fouling. Just like its always safer to be a tad rich than a tad lean. Its all about keepin the motor cool.

[Gunz]

Its always safer to run a colder plug than a hotter one, unless your having a problem with fouling. Just like its always safer to be a tad rich than a tad lean. Its all about keepin the motor cool.

Good to know. I never had a clue you could run a different size plug.

[SprinterX]

Good to know. I never had a clue you could run a different size plug.

It's not a different size, it's a different (colder) heat range.

[Gunz]

Good to know. I never had a clue you could run a different size plug.

It's not a different size, it's a different (colder) heat range.