2stroker Posted October 20, 2004 Report Posted October 20, 2004 Just rebuilt my top end. I did 4 heat cycles and took it for a cruise around the neighborhood and found it to be sluggish until it hits the top end, then it pulls like a beast. When cold the bike starts up with 1 or 2 kicks with the choke pulled half way out and idles fine. Prior to the rebuild the bike didn't have this problem. Aside from the new top end, the only difference is I replaced the stock reeds with Boyeson's and I installed a lightened flywheel. I thought for sure that the lightened flywheel would allow the motor to rev faster, but I'm getting the opposite effect. I'm sure it's due to jetting and not the flywheel. I remember reading a post a while back that mentioned Boyeson reeds needed a needle adjustment but I dont remember if you had to go up or down. Before I do the trial and error method, I though I'd ask the experts firsts . Here's a list of my mods: lightened flywheel +4 timing (modified stock plate) T3's Boyeson reeds Toomey 2:1 filter 300 main jets stock pilot jets TORS removed Quote
Ducman Posted October 20, 2004 Report Posted October 20, 2004 Which Boysen reeds are you talking about. My experience with the boysen power reeds (ported/dual stage type) is that they didn't need any jetting changes. If you got reeds, same design as stock, that are a lot stiffer, what you may be feeling is the reed making the power feel weak or slow to respond on bottom but hard hitting and much stronger on top and that is what it is designed to do. Some reeds are designed for better top end response, some for bottom, or all around. Thats just a guess, I would try some different needle positions to see if jeting could smooth the power delivery out. Quote
Banchetta Posted October 21, 2004 Report Posted October 21, 2004 Reeds will make your needles run richer...you might have to lean the needles by dropping them one notch.... Quote
2stroker Posted October 21, 2004 Author Report Posted October 21, 2004 I"ve got the dual stage Power Reeds. I'll drop the needls one notch and go from there. Or maybe I'll try the choke method first and see it it improves or worsens. If it gets worse I'll at least know that it's not lean......... I think Quote
lincster Posted October 21, 2004 Report Posted October 21, 2004 What is your elevation? 300 mains with a 2:1 filter sounds a little lean if you are anywhere below 1500' elevation. Quote
2stroker Posted October 21, 2004 Author Report Posted October 21, 2004 Lincster, your profile shows you're from Mesa, AZ. .Gold Canyon is just east of you and a little higher in elevation. I'm guessing around 1500'. I usually ride off of 4 Peaks Rd. near Saguaro Lake and is a little higher in elevation. Should I go up a size? Quote
lincster Posted October 21, 2004 Report Posted October 21, 2004 I know we have different pipes, but I have the 2:1 and the Boyesen Pro Series Carbon Fiber reeds. I run 370 mains, 30 pilots and Toomey needles on the 4th clip position from the top. I do have it jetted for the dunes so it is a tad rich here. If I were you, I would go up to 27.5 on the pilots and try 330 mains and see how it does. Quote
flea49 Posted October 21, 2004 Report Posted October 21, 2004 The answer to your question is yes,it will run richer,drop your needle and it will run better but thats not the correct fix,you want to keep the needle in the middle clip,call, pro-flow.com,and tell the number on your needle and tell them you want a set of needles 2 sizes leaner the 6 clip series is better. Quote
2stroker Posted October 21, 2004 Author Report Posted October 21, 2004 (edited) Dropped the needle 1 notch. The clip is now in the 3 position from the blunt end. I'm running Toomey needles. Its runs much better. Did a plug chop and the plugs had a nice paper bag brown color to them. I'm thinking of going up one size to 310 to see if it'll bog. If it doesn't, I'll leave them in. Thanks for the responses. Edited October 21, 2004 by 2stroker Quote
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