How jetting affects the plugs...

[SouperSport]

I've read many of the posts on jetting and reading the plugs, so I'm beginning to figure it out. I understand you DON'T want to use brand new plugs OR older plugs that are a little worn out. I also understand if they are black, wet, or sooty then the mixture is too rich; and if the are too white, overheated, or burned then the mixture is too lean. Perfect jetting should be a nice "hershey chocolate" tan-ish color....

 

So heres my question(s)....

 

Assuming your 'Shee is perfectly dialed in, the plugs should last a good long while, right? And how long is that? I'm not asking about "preference"... I know people that change their plugs just about every other ride... I mean really... How long SHOULD they last? After about some 30+ hours of riding I finally changed my plugs and they looked kinda black and wet. I realize carbon will build up, but they shouldn't be wet looking should they (too rich?)? But that's what they looked like after about 30+ hours... Should that be expected after that long?

 

If jetting is perfect... as long as the electrodes are in good shape, I should be able to just clean them and put them back in right?

 

Just FYI:

I have a compeletly shock shee (except for twist throttle and idle screw kit). I have not adjusted the jetting at all, 'cause it was supposed to be "ready to go" when I got it from the dealer about a month and a half ago. That dealer was at about 1000ft and probaly 50 to 70 degrees. I live just above 3000ft and it's been anywhere from 30 to 60 degrees lately. I've been using Yamalube at 24:1 (factory recommend mixture). I'll be making the switch to full synth pretty soon, and wonder if I should go a little leaner on the mixture (not the jetting..the premix..like change to 32:1 or something). In that case, then need to rejet... correct? (what do YOU think I should be at?)

 

Just trying to understand this whole thing better....

 

Thanks in advance forthe help...

[Banchetta]

I don't have a lot of time right now, but the plugs should last over a year. I change my once a year and not because I have to. I run 32:1 oil. A black plug on normal riding is normal since the pipes aren't hot enough or motor to burn the gases completely. Run it wot in 6th gear and that plug will look better than if you cleaned it...