For all you guys looking for a plug that is more than one step colder than stock. This is for you I talked to a NGK Rep and was asking about a colder plug than a DPR9EA-9 for a Raptor and I found that we can use JR10B the stock # is 1299 and the Bike that it fits..... 86-88 GSXR 1100. How this helps with some problems for somebody.[img]i/expressions/face-icon-small-happy.gif[/img]

 

What are the symptoms of a spark plug that's too hot? Or, the benefits of using a colder range? I have a high-comp 686 that's jetted pretty close, slightly rich for safety until I can find a quad dyno with a gas analyzer. Thanks!

 

Here ya go! http://www.ngksparkplugs.com/techinf...31000&country=

OOP's it was suppose to be a link.[img]i/expressions/face-icon-small-sad.gif[/img] This is a pretty quick explanation. http://www.ngksparkplugs.com/techinf...200&country=US

 

all I can say is I am not any good at this computer thingy.......[img]i/expressions/face-icon-small-blush.gif[/img]

 

Thats a good site. Here is a link for the lazy people like me.
NGK

 

Thanks for the link ward