jeremiahnelson15 Posted May 24, 2017 Report Share Posted May 24, 2017 Anyone running stock carbs with 421 lp cylinders? I am looking for a starting point on jetting at 1000' asl. Also wondering if anybody has run this setup with stock carbs. mods: pc pipes k&n pods +4 timing pro design cool head 23 cc domes v force 3's stock carbs 4 mil crank assassin lp cylinders (as cast) Quote Link to comment Share on other sites More sharing options...
gusto Posted May 24, 2017 Report Share Posted May 24, 2017 I'm going to guess at a 340 main and 27.5 or 30 pilot. you absolutely should buy the driveline billet bowls for your stock carbs. Quote Link to comment Share on other sites More sharing options...
STRIBZ Posted May 24, 2017 Report Share Posted May 24, 2017 Gusto is on the ball im running them with stock carbs with 350main needle "middle" 27.5 pilot 1 1/2 air/fuel screw 0-700 elevation Quote Link to comment Share on other sites More sharing options...
Ayesully810 Posted May 24, 2017 Report Share Posted May 24, 2017 15 hours ago, STRIBZ said: Gusto is on the ball im running them with stock carbs with 350main needle "middle" 27.5 pilot 1 1/2 air/fuel screw 0-700 elevation You got rid of your 35 pwks? Quote Link to comment Share on other sites More sharing options...
STRIBZ Posted May 24, 2017 Report Share Posted May 24, 2017 still have them, just couldn't get them to run as crisp as my stockers.. thinking i may just get some billet bowls for these and be done. how's your beast going? Quote Link to comment Share on other sites More sharing options...
Ayesully810 Posted May 25, 2017 Report Share Posted May 25, 2017 Im having an issue right now.. Ill update my post in the jetting section once I get it figured out. Quote Link to comment Share on other sites More sharing options...
STRIBZ Posted May 25, 2017 Report Share Posted May 25, 2017 No worries mate, Good luck Quote Link to comment Share on other sites More sharing options...
Ayesully810 Posted June 20, 2017 Report Share Posted June 20, 2017 On 5/25/2017 at 0:41 AM, STRIBZ said: No worries mate, Good luck What needle are u running? Quote Link to comment Share on other sites More sharing options...
STRIBZ Posted June 21, 2017 Report Share Posted June 21, 2017 in the stockers or the 35's? Quote Link to comment Share on other sites More sharing options...
Ayesully810 Posted June 21, 2017 Report Share Posted June 21, 2017 in ur stockers Quote Link to comment Share on other sites More sharing options...
STRIBZ Posted June 21, 2017 Report Share Posted June 21, 2017 can't remember to be honest, got them in a carb rebuild kit but have a better taper than stock does. cleared up little bog i could never get rid of.. stock carb needles are rubbish! Quote Link to comment Share on other sites More sharing options...
ginger Posted June 21, 2017 Report Share Posted June 21, 2017 i think the toomey needles is what most people run on stockers. Quote Link to comment Share on other sites More sharing options...
Ayesully810 Posted June 21, 2017 Report Share Posted June 21, 2017 17 hours ago, STRIBZ said: can't remember to be honest, got them in a carb rebuild kit but have a better taper than stock does. cleared up little bog i could never get rid of.. stock carb needles are rubbish! How does ur 421 run with the stockers compared to the 35s? Quote Link to comment Share on other sites More sharing options...
STRIBZ Posted June 22, 2017 Report Share Posted June 22, 2017 runs good mate, snappy and quick.. gave up on the 35's as i couldn't get them running crisp.. to used to mikuni tuning i guess.. i just need to get different pipes to wake her up. wouldn't mind some SLP's Quote Link to comment Share on other sites More sharing options...
Ayesully810 Posted June 22, 2017 Report Share Posted June 22, 2017 were u havin issues leaning out the pilot ? Im dropping pilot sizes trying to lean out the bottom end its rich af. Was running great in the fall but was still rich and now that its summer its rich af now i dropped from a 52 pilot down to a 45 and its still rich. Im getting closer i think. Quote Link to comment Share on other sites More sharing options...
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