Before any one says anything, I have read/searched all kinds of info on the subject but still can't find my answer.
I have a 99 RK with a 95 kit, cams, Samson slip ons, Hyper charger and a PC II. I know right now that there are stock HD plugs in it. Are these ok for this type of mods are should I look for something better/different ?
Thanks for the help.

 

welcome. were the engine upgrades DIY or did the dealer/indy do it? IMHO, the dealer/indy may have good plug recommendations for the set-up you have (what kind of cams, what kind of tune, etc.).

 

Neither, I bought it this way. I believe it was done at an HD dealer somewhere in Kansas but not sure. This info is only because of the sticker on the dip stick. That would bring up a whole new question on how I could find out for sure.

 

This is not exactly an answer to your question but I'd thought I would just toss this chart into the thread

 

http://www.e3sparkplugs.com/diamondfire.htm I have heard good reviews on these, I still have the 6r12G, its the gold plug available from some dealers.

 

Thanks for the chart, I already looked at that. Still, would there be a difference because of the 95 conversion? I found that alot of people have said the the Autolite 4164 would work well. Any thoughts?

 

PS, yea I guess I should have put this in Tech.

 

I use 4164's. R&R does in their builds also.

 

Anybody used these? Looks pretty darn cool. May be more snake oil, but I think I may give them a shot sometime...

 

Yea, I am hijacking my own thread but. Any one know where or how I can find out who built this bike and what was done to it. The info might help with my original question. As I said, I believe it was done at Topeka HD in Kansas.