big bore jetting?
#1
big bore jetting?
search confused me a lil..so im asking
what jetting for a 331kit, slip on,snorkel removed/lid on, aftermarket air filter,stock carb. apologize if its a redundant question!! also..is there a jet kit with the proper sizes or must be purchased individually? Thanks!
what jetting for a 331kit, slip on,snorkel removed/lid on, aftermarket air filter,stock carb. apologize if its a redundant question!! also..is there a jet kit with the proper sizes or must be purchased individually? Thanks!
#2
#3
DynoJet carries kits. Some say the #2206 model for the KLX300 may be a better fit for the big bore over the ones for the KLX2009+. You can also go all Kaw with a KLX300 adjustable needle (N1TC?) and larger main jets.
That spreadsheet is a nice resource.
That spreadsheet is a nice resource.
#7
nope. you shouldnt need one anyway, even with the big bore. i put a 38 in my 331 once and it was so rich that i had to turn the mixture screw almost all the way on to get it to run right. went back to the 35.
#8
including slip on and snorkel removed? im 700ft above sea level .looks like for the 331bb kit i need 132 main,35 pilot, dj needle 228 clip 3 or 4...i think
Last edited by Subasaki; 02-11-2015 at 02:21 AM.
#9
My elevation is less and I run the 38 pilot, and have gone between the DJ equivalent of 134 and 136 I believe, I've actually got the keihin type jet in there now and I think it's a 148. 351cc and half your elevation, it needed the big jet to run out to red line.
#10
@700ft with slipon and lid off, a 250 is too lean with DJ 132/4N, Still a little lean with DJ136/5N/4turns out - but very much more powerful. Getting your AFR correct @700ft with the DJ kit will likely require a jet larger than the 136.. If it were mine, I'd order a DJ 138 or 140, set the needle on 5N, fully uncover the pilot jet(#35) with 4 turns out on the fuel screw, pull the lid and Dyno it for a good AFR chart.. My data would indicate that you'll be close - maybe perfect. Also, analyzing my charts, it looks like any extra pull through the CV causes it to go lean.