mattb348 Posted October 17, 2005 Report Posted October 17, 2005 Ok, I'm sure most of you are sick of the same old jetting questions, but I feel that I have a unique question here, and I have never seen anyone ask this so far. Here goes.... I know its possible to burn up an engine with the jetting to lean, and I'm assuming it will burn up in the high RPMs/WOT, but what about the LOW rpm range? Like in the pilot jet range. I know dirtbikes have only 2 jets to tinker with (slow jet & main jet), but what about banshee's? how many jets do those have? And yes, I'm aware that I left out the needle jet; I don't plan on ever messing around with that (why bother, it justs make it so you now have THREE jets to friggin mess with). I have a stock 2002 banshee that I want to put pro circuit pipes & silencers on. I'm guessing I may have to tinker with the main jets after, but I'm wondering if its going to lean out my pilot jet and burn up my engine if I put around on trails at very low rpm's. Also, do plug chops and carbon rings work the same as with MX dirtbikes? With those, you run it WOT for about 15-20 seconds, then kill the engine, and then you have to cut off the threaded area of the plug and look at the carbon ring at the bottom of the white insulator (and it should have a carbon ring that is 1-3 mm long, extending UP from the base of the insulator) Lastly, does anyone bother tuning the pilot jet with banshee's? and if so, what do you look for? do you try and get the best lowend power/response without burning up the engine? Thanks for any help! Quote
midnite Posted October 17, 2005 Report Posted October 17, 2005 (edited) Pilot jet=idle to 1/8 throttle. Needle jet 1/8 to 3/4 throttle. Main= 3/4 to wot. If you have to take your float bowl off to change main jets, why not change the pilot jet, it's right in front of the main jet. Just put in #30 pilots, and play with the air screw to fine tune the pilots. What elevation you ride at? Edited October 17, 2005 by midnite Quote
rocketboy Posted October 17, 2005 Report Posted October 17, 2005 your not gonna blow up your bike by running a lean pilot its gonna run like ass though ,yes people who know what there doing check and often change the needles the pilots the mains the clip posiitons etc. its not rocket science but it can be tricky with little jetting experiance .your gonna give yourself a heart attack ,your pipes and filter on stock carbs is nothing to jet ,try jetting a full blown race machine wit h different everything and youl l really know about aggrevation. Quote
chris642 Posted October 17, 2005 Report Posted October 17, 2005 needles can make a big diffrence in how your bike runs so i wouldnt every say that you should just leave it and never mess iwht it. a cr 80 i had had a horrible mid range bog right before the powerband, i dropped a clip on the needle and it ran like a beast!!(yes, a cr 80 ) Quote
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