Guys,
I bought some iridium plugs today from the USA and he sent the DPR8EIX-9 instead of the DPR9EIX-9. The 8 number represents the heat rating. Will an 8 heat rating plug be ok in this bike. From what I can see on the NGK website the 8 will run hotter than the 9 but I dont know by how much and what this will do in relation to heat etc.. I don't want to put them in and it cause some damage etc. I'd appreciate any opinions from anyone that knows more about this than me. If it ends up that they are ok to use I will and just let the guy know he sent me the wrong ones. Thanks in advance.

 

One heat range difference won't harm motor. If you ride your bike alot in town or cruising, the hotter heat range will actually be beneficial. Colder heat ranges are for high rpm riding.

 

Thanks for that. Appreciate it. In they go then.

 

I know iridiums are supposed to be the best out there, but best set I ever had in my 'cane was cheap set of Autolites.

 

I just got them to see how they went. They claim lower fuel consumption, longer life, smoother engine running and improved ignition efficiency giving enhanced power and acceleration. ( qouting from the box ). I'll see how that goes and if they dont prove to be any different from standards I'll go back to them next time. Plus they are 30 dollars each here and I got em for $50 AUD posted to my front door. I love a bargain !!!!!

 

All my race buddies use them. Blackbird motor I put in my RR already had them so I don't know how it ran before. I can tell you it screams now! Post a review when you get some seat time with them.