jbirdshee Posted August 24, 2010 Report Share Posted August 24, 2010 So I am needing some fatter needles for my stock carbs, but I do not know where to go about getting some. Can somebody point me in the right direction please??? Also what is the actual model name or number for these carbs? I know they are 26mm but I would like to know specifically what they are called. Thanks for any help Quote Link to comment Share on other sites More sharing options...
shee2000 Posted August 24, 2010 Report Share Posted August 24, 2010 mikuni vm26ss Quote Link to comment Share on other sites More sharing options...
jbirdshee Posted August 25, 2010 Author Report Share Posted August 25, 2010 thanks for that. anybody else know where i can get these??? Quote Link to comment Share on other sites More sharing options...
CarvedArt Posted August 26, 2010 Report Share Posted August 26, 2010 So I am needing some fatter needles for my stock carbs, but I do not know where to go about getting some. Can somebody point me in the right direction please??? Also what is the actual model name or number for these carbs? I know they are 26mm but I would like to know specifically what they are called. Thanks for any help The stock carb is: Mikuni VM26SS Spigot (round-slide) The stock Jet Needle is: 5N7 1st character = needle length (5 = 5 Series, 50.00-59.99mm) 2nd character = amount of taper in 15 min intervals (N = 3 degs 30 mins) 3rd character = materials and finish (7 = [exact length, major OD, point of beginning of taper in reference to clip position, manufacture specific]) To get fatter you need to do one or more of the following: Move the clip down on the needle (position 4 or 5) You can also use "half-height" washers under the clip to get a little fatter as well Get a needle with more taper (greater than N) The other half of the Jet Needle equation is the Needle Jet which is the "tube" that the Jet Needle mates with (slides/fits into) The stock Needle Jet is: 182 Series A larger Needle Jet (larger orifice) will also fatten the mix. (LEANEST [N-0 through Q-8] RICHEST) Are you sure you need fatter needles? If you're sure you need fatter needles I would suggest contacting an expert in the field not someone who's just selling parts. You might try: www.motorcyclecarbs.com 1 Quote Link to comment Share on other sites More sharing options...
jbirdshee Posted August 27, 2010 Author Report Share Posted August 27, 2010 The stock carb is: Mikuni VM26SS Spigot (round-slide) The stock Jet Needle is: 5N7 1st character = needle length (5 = 5 Series, 50.00-59.99mm) 2nd character = amount of taper in 15 min intervals (N = 3 degs 30 mins) 3rd character = materials and finish (7 = [exact length, major OD, point of beginning of taper in reference to clip position, manufacture specific]) To get fatter you need to do one or more of the following: Move the clip down on the needle (position 4 or 5) You can also use "half-height" washers under the clip to get a little fatter as well Get a needle with more taper (greater than N) The other half of the Jet Needle equation is the Needle Jet which is the "tube" that the Jet Needle mates with (slides/fits into) The stock Needle Jet is: 182 Series A larger Needle Jet (larger orifice) will also fatten the mix. (LEANEST [N-0 through Q-8] RICHEST) Are you sure you need fatter needles? If you're sure you need fatter needles I would suggest contacting an expert in the field not someone who's just selling parts. You might try: www.motorcyclecarbs.com wow! ok thanks man. i already have the clip all the way down and still need more so a new needle seems to be my next option. thanks for all that info though i really appreciate the detail. Quote Link to comment Share on other sites More sharing options...
banshee67 Posted August 27, 2010 Report Share Posted August 27, 2010 toomey makes a great needle. slightly noticeable gain. a little more crisp response. more noticeable on mostly stock engines Quote Link to comment Share on other sites More sharing options...
jbirdshee Posted August 27, 2010 Author Report Share Posted August 27, 2010 toomey makes a great needle. slightly noticeable gain. a little more crisp response. more noticeable on mostly stock engines i dont have a stock motor though. i have a 421 cub Quote Link to comment Share on other sites More sharing options...
banshee67 Posted August 30, 2010 Report Share Posted August 30, 2010 they will still work fine and you will probably notice a difference and they will be better than stock Quote Link to comment Share on other sites More sharing options...
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