how do these plugs look?

[chardhin]

Front cylinder:

;

Rear cylinder:


Just pulled these out, They look clean no build up that is, the rear is whiter than the front wich leads be to believe its a little lean. Am I correct?

[wilbur]

They look like plugs.

How many miles?
What type of riding/RPM range?

Overall; not bad. I've seen worse.

[rabes56]

Look OK to me. Rear cylinder runs a bit hotter so it is not unusual for it to look a bit leaner. I use a colortune plug and try to get the rear cylinder spot on which usually has the front slightly richer. Are you having running issues?

[bitpusher]

they loo good to me. not black, not white - just right.

[chardhin]

4,000 miles since conversion, riding in the 3200-3600rpm. I have some pinging under mid- heavy acceleration. Put in colder plugs, of that doesnt work I will change jets.

[wedge]

Originally Posted by chardhin

4,000 miles since conversion, riding in the 3200-3600rpm. I have some pinging under mid- heavy acceleration. Put in colder plugs, of that doesnt work I will change jets.

The pinging must be very slight, and you must be aware of it and keeping it from getting too bad by limiting how fast you feed the throttle, because there is zero evidence of detonation on that plug. Color is a bit dark down inside, but then this is not from a clean cut so I will say that it does not appear to be black, but rather a (as Rocketman likes to call it) Kingsman charcoal color. You can live with that, and if that color does not get very light gray down inside near the bottom you are good. Looking at this, you are possibly correct in going to the #8 plugs. Color is hard to determine on the computer, but it looks like a slight tan is developing on the porcelain, which would indicate a good heat range for the plug. You may still get away with running colder, and we will find that out now. Watch for pepper looking specs on the porcelain, that is detonation, and if they get bad, it's time to start rethinking everything.

Did you say what ignition you are running? I'm thinking if it's a TC88 that you may want to back it up a slight bit and possibly get back to standard #7 plugs. But lets see how the new plugs color up, and how it feels first.

How long were the plugs in? The picture is not too clear, so I have to ask, am I seeing the center electrode rounding off? If so, you need to change the plugs more often. I run the cheaper ones like you just got and trash them every 5000 miles. It's just not worth running bad plugs when they are so cheap. Again, can't see for sure, so this may mean nothing.

[chardhin]

About four thousand or so miles on these plugs. I am rummin the tc88a with Ricco big bore hooligan map. I will put a good 100 miles on these plugs and check em out. You are correct, I dont let it ping if I can help it.

[xena]

On my Sporty the front cylinder has always
run a little leaner than the rear - just the opposite
of yours. I've run lots of different Maps and jets
and have never been able to completely eradicate
all the pinging especially when the outside temps
go up above 90 degrees.

[shotgun46]

They look Normal to me ! Mine always look the same

[chardhin]

Originally Posted by xena

On my Sporty the front cylinder has always
run a little leaner than the rear - just the opposite
of yours. I've run lots of different Maps and jets
and have never been able to completely eradicate
all the pinging especially when the outside temps
go up above 90 degrees.

over 90 degrees is defenatly when it pings. I think I am just gonna take it easy in this kinda heat.