MFJustin
Welcome to Thunderdome
Had a question for you knowledgable carb people. I've read and Reread the carb guide and think my carb tuning attempts are coming out ok. I've got an '81 running a set of BS38's, straight pipes and UNI foam filters. Main jet has been bumped up to a 142.5 from the stock 135. Bike idles good, as far as WOT throttle goes it pulls but I definitely feel some break up which would indicate running too rich. Mix screw is sitting at the recommended 2 1/4 turns out.
After running these plugs for awhile to see how everything would shake out, I pulled them to take a look. The left cylinder plug looks to be black but not super black, the right cylinder plug looks light-grey/whitish. I thought I remember reading that the right cylinder burns hotter so that could be the cause for a different color plug. These plugs are BPE7e's by the way. Just wanted to see if one of you more knowledgeable individuals could look at my plugs and tell me what you think. I want to drop the main jet down to a 140.0 to see if I can eliminate some of that breakup but my concern is that the right plug is coming out that color because its running lean and don't want to lean it more by dropping the mains. Bike doesn't have any popping at idle or deceleration, feels like it runs good overall but I'd rather be able to say the bike runs great instead of settling for good.
Hopefully these pics will do. Hard to get my iphone to focus on what I want it to.
After running these plugs for awhile to see how everything would shake out, I pulled them to take a look. The left cylinder plug looks to be black but not super black, the right cylinder plug looks light-grey/whitish. I thought I remember reading that the right cylinder burns hotter so that could be the cause for a different color plug. These plugs are BPE7e's by the way. Just wanted to see if one of you more knowledgeable individuals could look at my plugs and tell me what you think. I want to drop the main jet down to a 140.0 to see if I can eliminate some of that breakup but my concern is that the right plug is coming out that color because its running lean and don't want to lean it more by dropping the mains. Bike doesn't have any popping at idle or deceleration, feels like it runs good overall but I'd rather be able to say the bike runs great instead of settling for good.
Hopefully these pics will do. Hard to get my iphone to focus on what I want it to.