stump magnet Posted August 7, 2007 Report Share Posted August 7, 2007 are there any jetting changes required for a 06 290 when fitting a set of boysen reeds? want smoother power of the bottom will these reeds contribute to this, have already retarded timing and fitted slow throttle. cheers guys for your replies. Quote Link to comment Share on other sites More sharing options...
telecat Posted August 7, 2007 Report Share Posted August 7, 2007 They tend to make the bike run richer than normal so you will have to adjust the mixture. Quote Link to comment Share on other sites More sharing options...
perce Posted August 7, 2007 Report Share Posted August 7, 2007 are there any jetting changes required for a 06 290 when fitting a set of boysen reeds? want smoother power of the bottom will these reeds contribute to this, have already retarded timing and fitted slow throttle. cheers guys for your replies. From what you've written you appear to be slowing your bike down, fitting Boysen reeds will have the opposite effect as they give it more go. Quote Link to comment Share on other sites More sharing options...
copemech Posted August 7, 2007 Report Share Posted August 7, 2007 Should be about right with a #36 pilot, but you may have to drop the size on the main dependant on if you want it to really clear out on the top high revs. Quote Link to comment Share on other sites More sharing options...
nigel dabster Posted August 7, 2007 Report Share Posted August 7, 2007 33 pilot 118 main to start, the boysens would be smoother off the bottom but more top end, suggest you learn throttle control and ditch the qa throttle. Quote Link to comment Share on other sites More sharing options...
copemech Posted August 8, 2007 Report Share Posted August 8, 2007 I would ahve absolutely agreed with Nige, but since he has been on a blinkin gasser for a while, it just does not seem the same and I do not quite know why, but on both the "06 and '07 bikes I have had to go up on the pilot from the #33. RYP is recommending a #38 even, but I will tell you I have been running a # 35 with the timing back 5mm on the plate and the Boyesens. Is is really smooth, if a bit on the lean side(which is the trick) and does not like it when cold off the start. Which makes me still recommend the #36 for most. I had to drop all the way to a 110(sounds stupid I know) on the main in order for things to clear out nicely, and could even go further down, but once done, it revs like a crazy mans bike, like no other I have had, scarey! I really do not know if you want or need that! Certainly does not contribute to long piston life if you take it there much, but the top end power is endless it seems! The blubbering with the stock jet around 118 is a limiting factor for self preservation of the motor it seems. Mine would never clear with a 118! Your mileage may vary! How's yer noggin, m8? Quote Link to comment Share on other sites More sharing options...
nigel dabster Posted August 8, 2007 Report Share Posted August 8, 2007 Stump magnet where are you us or uk would help if its ON YOUR PROFILE!!!!! Quote Link to comment Share on other sites More sharing options...
stump magnet Posted August 8, 2007 Author Report Share Posted August 8, 2007 Stump magnet where are you us or uk would help if its ON YOUR PROFILE!!!!! im in the uk Quote Link to comment Share on other sites More sharing options...
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