Darkblade Posted September 10, 2015 Report Posted September 10, 2015 i just finished my build it has a hot-rods 4mil long rod crank 66mm wise-co 795 pistons mx/trail port cool head 21cc domes fmf gnarly with pc2 pipes chariot billet intake with vf4 reeds uni foam pods Ive been trying to jet it correctly i have a 30 pilot and Ive tried from a 300 main to a 340 main and results have been the same a lot of vibration like its running rough dull sounding and it doesn't rev as high as it should some times when i start it the right cyl wont fire and other times they will both fire some time the left wont fire and the right will but its mostly the right side that wont fire Ive swapped plugs plug wires and nothing but when i swapped the left and the right carbs both cyls fired the needles are set on the center clip and my idle screws are almost all the way in and it barely idles iv also put new plugs in it twice so its not bad plugs Quote
hercalmighty Posted September 10, 2015 Report Posted September 10, 2015 Are you running a spacer plate or do you have the domes cut for a 4mil? What fuel are you running? Have you done a leak down test, a squish test, and a compression test? Sent from my VS980 4G using Tapatalk Quote
Darkblade Posted September 10, 2015 Author Report Posted September 10, 2015 spacer plate the cyls were not able to be ported for the stroker 93 with amsoil dominator at 40:1 no leaks 135 in both cyls squish was .058 Quote
sheerider11 Posted September 10, 2015 Report Posted September 10, 2015 spacer plate the cyls were not able to be ported for the stroker 93 with amsoil dominator at 40:1 no leaks 135 in both cyls squish was .058Hmmm. That sounds odd. Where the cylinders ported prior? A spacer plate is only to keep the piston and head from contacting. Never to compensate for timings Quote
hercalmighty Posted September 10, 2015 Report Posted September 10, 2015 You might just a have a wacky setup. Either your port timings are way off or something else is funky. With 21cc domes your compression seems a little low and your squish is a little big. Do you know what thickness your base gaskets are? Maybe try some thinner base gaskets to drop the cylinders a little and tighten up your squish Sent from my VS980 4G using Tapatalk Quote
Darkblade Posted September 10, 2015 Author Report Posted September 10, 2015 could it be the stator ive heard it could cause this Quote
hercalmighty Posted September 10, 2015 Report Posted September 10, 2015 Yeah. Maybe find someone who has a known working electrical system and swap out parts Sent from my VS980 4G using Tapatalk Quote
Darkblade Posted September 10, 2015 Author Report Posted September 10, 2015 i wish i could i dont know anyone in my area that has a shee is there a way to test my stator Quote
Power_Man Posted September 11, 2015 Report Posted September 11, 2015 (edited) are they stock carbs? Edited September 11, 2015 by Power_Man Quote
Darkblade Posted September 11, 2015 Author Report Posted September 11, 2015 are they stock carbs? Yes they are stock 26mm makunis and ive cleaned them several times just to make sure they are not the problem Quote
Power_Man Posted September 11, 2015 Report Posted September 11, 2015 Yes they are stock 26mm makunis and ive cleaned them several times just to make sure they are not the problem Stock carbs on Banshees have a LEFT carb and a RIGHT CARB. I'm thinking seeing you freely swapped them back and forth that even if you have them in right, that you have misplaced the "choke tube". Left carb has the choke. Put it back on left side. There should be a hose that runs from the right side of the left carb over to the left side of the right carb. You will see the nipple of you look. I imagine they are sucking air. Another thing is on top of missing the choke tube is possible slide in backwards. Quote
Darkblade Posted September 11, 2015 Author Report Posted September 11, 2015 slides are in correct way the cant be put in backwards because i have the idle screw so it wont go in backwards if the choke tube was missing it wouldn't be causing this problem would it Quote
uman1030 Posted September 11, 2015 Report Posted September 11, 2015 slides are in correct way the cant be put in backwards because i have the idle screw so it wont go in backwards if the choke tube was missing it wouldn't be causing this problem would it They surely can be installed backwards if they were installed into the wrong carb. You should be able to see the arched cut away from the air cleaner side if they are correct. Quote
camp0429 Posted September 12, 2015 Report Posted September 12, 2015 Carb bowls can be switched also Quote
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