Rigid_Banshee Posted March 11, 2019 Report Share Posted March 11, 2019 Can’t quite get a whole lotta jetting info on these carbs, just looking for a ballpark to get me started. V force4 reeds, Pro Circuit pipes, stock head, stock bore, elevation is 1100ft ASL ambient temp the bike would be run in is 10 to 30 degrees Celsius Quote Link to comment Share on other sites More sharing options...
Ayesully810 Posted March 11, 2019 Report Share Posted March 11, 2019 (edited) ive never jetted 28s before but i have quite a bit experience with 35s a 45 pilot and 145 ish main sounds about right for starts maybe less main if its really humid. this might be on the rich side. jjh needles are most used with success with 28s. get pilot set first so its start and idles good then get main figured out, work needle last middle clip should be good to start. Edited March 11, 2019 by Ayesully810 Quote Link to comment Share on other sites More sharing options...
Keno Posted March 11, 2019 Report Share Posted March 11, 2019 This guide helps tremendously. https://www.duncanracing.com/s/KeihinCarbJetting-2015.pdf Quote Link to comment Share on other sites More sharing options...
Rigid_Banshee Posted March 11, 2019 Author Report Share Posted March 11, 2019 Thank you very much guys ! Same I’ve never messed around with the 28mm pwk’s. Quote Link to comment Share on other sites More sharing options...
locogato11283 Posted March 13, 2019 Report Share Posted March 13, 2019 All of the PWK carbs will jet similarly. For that elevation and temp, I would start with 165 main and 50 pilot.. Then work from there. I've had everything from 33 to 41 PWK and they all jet similarly on a wide range of motors. Quote Link to comment Share on other sites More sharing options...
ScEaMin BaNsheE 305 Posted March 14, 2019 Report Share Posted March 14, 2019 I have the same carbs coming this week, im at sea level, temps 70-90 F, what jets should i start out with, thanks DMC 916, Uni foam pods no box, chariot reeds, +4 timing, noss head 21cc domes, Quote Link to comment Share on other sites More sharing options...
Keno Posted March 14, 2019 Report Share Posted March 14, 2019 The same ones recommended. JJH needles. Pilots probably somewhere between 45 and 50. Main somewhere between 145 and 165. Start big and work down. Quote Link to comment Share on other sites More sharing options...
Rigid_Banshee Posted March 23, 2019 Author Report Share Posted March 23, 2019 All of the PWK carbs will jet similarly. For that elevation and temp, I would start with 165 main and 50 pilot.. Then work from there. I've had everything from 33 to 41 PWK and they all jet similarly on a wide range of motors.Prefect ! Got 155 mains and a 50 pilots and seemed to get me really close thanks loco ! Quote Link to comment Share on other sites More sharing options...
SKEETER Posted March 24, 2019 Report Share Posted March 24, 2019 You should thank cam. Loco had to facetime him and ask... 2 Quote Link to comment Share on other sites More sharing options...
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