Detonation

Hello all. I was checking my plugs and they are starting to show some signs of detonation, some shiny little balls on the porcelain. The bike is stock aside from a K&N filter with a 2-1 header. It is a 03' 88 cid twin cam.
The carb has a #180 and a #45 stamped on the jets.
With the stock dual staggered exhaust the end of both pipes were fairly sooty. The new collector has a little bit of soot not very much, nothing compared to old set-up. I have order a 88-89 Sportster needle to put in. Does the jetting sound right? I know very little about working on bikes.

thanks

took the carb apart again..think I may have a DynoJet kit in it because the emulsion tube has not nut to hold when taking main jet out..also only as two air bleeds in it near the bottom. And the need has 6 different height settings. Like I said before it has a 45 pilot and a 180 main. The needle was a the 3rd from bottom I put it 2 from bottom with the idle/fuel mixture set at 3 turns out. The bike started and idled good no cough or spit when cracking the throttle in neutral. On the way to work felt a bit of a stumble when cracking the throttle say in 3rd and then seems to come out of it after a second or two. Pulled the plugs at work and the ground strap looked fairly white very little evidence of a fuel ring on the top thread. I was thinking that raising the needle would richen it up some in low throttle applications? If I had it my way I would either start from stock or order a kit from CVP but I have to work with what I have at the moment. The slide was metal and also the vacuum port was drilled to 1/8". From my understanding I can't use a H-D or CV jet with that emulsion tube...so that kind !@#$% me..

any input is appreciated.

That stumble could be from the drilled slide jumping too quick...Sporty needle could help with the 45 pilot...Pretty sure most dyno-jet kits use a 48 pilot.Best bet when you have the coin would be dump the dyno jet and get CVP kit or stock HD and a new slide...Kinda hard to read plugs now with the fuel today...

Thanks for the replies.. btw. My mileage is around 33 mpg... could i expect a bit better mileage for a longer haul? I did read somewhere where the DynoJet kit just makes noise and nothing gained performance wise?? This is the way the bike was when i bought it so don't really know what to expect.

Mileage sounds pretty bad. What kind of riding are you computing mpg on? Your mileage sounds like what I got with a vacuum leak and a ignition spark short - I'd think you should be getting at LEAST 36 mpg.

Ended up gettin a sportster needle with a used stock emulsion tube so not exactly sure of part #, but have a 185 and a 190 main with a 45 and 46 slow jet. Like Ken mentioned earlier I am going to try the 190 with 45 and stock emulsion tube. Unfortunately mostly do short little jaunts, except for weekends etc. Live 4 miles from work.

How would I go about checking the spring? I will have it out tomorrow. Don't really have anything to compare it to? What about shimming the spring a bit?

Ended up putting the stock emulsion tube back in with a 190 main sports term needle with one shim.. 45 slow jet. 3.5 turns out on mixture where it seemed best..seemed to have a bit of a flat spot in first half of throttle. Put two more shims under needle and went to a 46 slow jet.. woke the bike up by seat of the pants.. not sure which did it but thought "F it" do both at the same time. Going to let a buddy take it for a drive again and get a second opinion.. air/fuel screw now 2 turns where it seems to like it. Thanks for all the help. Great fourm!