I cant remember which way the plug number means
I know its 2 ranges different from stock

 

Well I can make a good guess that you have no idea why you are running it. Who told you to run it? You may want to find a new mechanic.

 

Mucky- here is an example...Ngk number cr8e stk plug. a 9 will be "colder" an 7 "hotter"

Buddy- If someone did his engine work, he just might be following the builders advise. But I agree, two heat ranges is a bit excessive for a thumper. my 2 cents, Bill

 

It is funny. the internet is a pain in the ***! To many people read something and go for it. If you are on the same machine, in the same area, same elevation, then and only then you have a reference point to start from.

I did a bunch of testing after my mods, and I still find the stock cr8e is the best performing plug for my application. Bill

 

Am I buddy?[img]i/expressions/face-icon-small-smile.gif[/img][img]i/expressions/face-icon-small-wink.gif[/img]

 

than it is a colder plug. I can never remember

 

do you want to be? Yes I was refering to you. I agree with you on the looking for a new wrench. two cooler is damn near frost bite. If you are new to the sport, who do you trust? a wrench usually. he might just be that person. I don't know, we don't know.