Jetting and Carb Tune Question
I inhereted a 2002 KLR with 40,000 km, and it's had a history. Painted a sexy blue and gold with a bizarre mod list (you should see the subframe bolts), I rode the bike all last summer and noticed the carb was gummy and sluggish.
I'm giving it an overhaul for the summer - doohickey, carb tune, general maintenance and recommended mods - and I'm a bit puzzled on how to tune my carb.
So far I've done:
- Dynojet kit (already on the bike when I got it)
- SuperTrapp IDS2 (already on the bike)
- Cut and de-snorkeled airbox
- Pine-Sol soaked and cleaned the carb
- Drilled mixture screw (2 1/4 turns)
- Drilled slide to 7/64
What puzzles me is the jetting on the carb. It's got a Dynojet #150 main (Keihin #165 according to JetsRUs) - I've never seen someone mention anything higher than #150 Keihin. On top of that Dynojet says stage 2 (third notch on the needle) is supposed to go with a #155 jet (Keihin #171).
I'm gonna test the new setup tonight, but I've never heard of jets this big used on the KLR. Right now I'm leaning toward the #155 jet as prescribed. I'd really appreciate some pointers on where to go.