nicktoney Posted October 16, 2006 Report Posted October 16, 2006 alright, my mods are in the sig. right now i have 300mains, 27.5 pilots and .5 turns out on the screw. the temps here are dropping down to around 30-50... usually cold. when i go to start my shee, shes a bitch to start. i mean, i have to pop start it to get it to start... then i hear one cyl ding ding ding... then the other comes around... then when its warm it runs great. if i drop down to stock pilots, will that help cold starts? i mean, FREEZING starts? im gonna clean my carbs, swap plugs, and the such tonight again, but just let me know what the standards are with jetting with dropping temps... is it one size larger main with each ten degrees? fyi- elevation- 1200-1400 Quote
dajogejr Posted October 18, 2006 Report Posted October 18, 2006 27.5 pilots should be just fine with your mods. However, dropping down a size will hurt, not help. You need more gas for cold starts, not less. Are you using your choke to start it? If you're at .5, and it is still tough to start, bump up to a 30 pilot and go 1.5 to 2.0 turns out.... However, I think the problem may be elsewhere. When I had similar mods, I could run a 25 with .5 turns out or a 27.5 at 1.5 turns out or so. I think it's time to check compression, just to be safe... Also, I'd completely dissasemble the carbs and choke circuit to clean 'em. The bike should'nt start on "one" cylinder, and then the other picks up....that tells me it's not a jetting specific problem. Could be spark, could be a dirty carb, worn reeds, worn top end. I don't think changing the brass is your cure here.... There is no "Standard" for jetting...only rules of thumb based on experience. Normally, a 20 to 30 degree drop in temp requires one size larger main. Again...rough guesstimate. Based on your mods (mainly a full airbox w/ lid and no snorkel) and your elevation, (just above 1000 feet) I think you're jetting is rich all around. The main might be ok for real cold temps....but I truly feel your pilot is rich as is. Quote
nicktoney Posted October 18, 2006 Author Report Posted October 18, 2006 hey thanks... here is what ive been thinking and yes, compression check on both cyl. are 151-153 area... right where they should be.. i use the choke to start... im thinking the reason it didnt start to nice was because i ran my bike just putting around the yard.... probably loaded up... putting just to put it out of the way... then i went to start and when i pushed it down the hill it just hummed, then started dinging on the right, then finally left... felt like fouled plugs.. took it screaming through the yard and up and down the field after it was warm... parked it.. next day, i went out in the morning when it was COLD... started after 3 kicks... choke on... who knows, maybe something needed blown out... maybe my plugs needed cleaned up... idk... ill clean it up anyways.. and check my reeds... thanks again! Quote
dajogejr Posted October 18, 2006 Report Posted October 18, 2006 for 2.00 a plug, cleaning them up is a total waste. Buy two new ones.... And...I think you should LEAN out your pilot and go back down to a 25. Putting around getting them loaded up, and .5 out on your air screw tells me there's way too much fuel at idle to low throttle... Quote
nicktoney Posted October 18, 2006 Author Report Posted October 18, 2006 i meant they seemed to clean themselves up.. idk if thats possible? i have a box of ten in my truck :: but wouldnt i be able to just turn my screw out 1.5 turns and be close to the stock pilot? Quote
dajogejr Posted October 18, 2006 Report Posted October 18, 2006 I gotta sit here and think about that.... UM.... Close, yes... But I'm about 99% positive with an airbox and lid even with a K&N, 27.5 is TOO much.... You'll get more "usable adjustment" by the air screw if you jet down on the pilot... Quote
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