oberlez Posted May 4, 2015 Report Share Posted May 4, 2015 What's the biggest you guys are drilling your dumps to? I'm at .120 now and need to richen my bike a tad. I have my EGLneedle all the way raised and power jets all the way open. Thinking of going somewhere between .120 and .125..let me know if this is alright Quote Link to comment Share on other sites More sharing options...
BANSHEE HP Posted May 4, 2015 Report Share Posted May 4, 2015 What size motor? .125 is average for a 4-10mm cub Quote Link to comment Share on other sites More sharing options...
Surfrjag Posted May 4, 2015 Report Share Posted May 4, 2015 Why not go .122" Quote Link to comment Share on other sites More sharing options...
J-Madd Posted May 4, 2015 Report Share Posted May 4, 2015 You can drill the pjs out to 0.096" if you don't want to drill the mains/dumps. Note that they won't shut all the way off once you do that. Quote Link to comment Share on other sites More sharing options...
oberlez Posted May 5, 2015 Author Report Share Posted May 5, 2015 Its a 421 cub with drag port. My numbered bits don't have a .122 bit. Do they make a .122 bit? Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted May 5, 2015 Report Share Posted May 5, 2015 Mine are drilled to .1225 bits were bought from MSC and I wanna say they were titled reamers Quote Link to comment Share on other sites More sharing options...
n2otoofast4u Posted May 5, 2015 Report Share Posted May 5, 2015 You can drill the pjs out to 0.096" if you don't want to drill the mains/dumps. Note that they won't shut all the way off once you do that. IMO this is the better route. 1 Quote Link to comment Share on other sites More sharing options...
RadarRacing Posted May 6, 2015 Report Share Posted May 6, 2015 IMO this is the better route. Yup , yup. Or add another powerjet. I would think an egl plus an open PJ should feed your motor enough but some builds with an aggressive (good) dome setup and certain pipes will need lots of fuel. Are you positive you do NOT have a fuel delivery issue? Do you have big bowls? Carbs setup for pump or gravity feed? Definately make sure you have the carbs as well as all powerjet lines clean and the pj lines should be short. 2 Quote Link to comment Share on other sites More sharing options...
n2otoofast4u Posted May 6, 2015 Report Share Posted May 6, 2015 Yup , yup. Or add another powerjet. I would think an egl plus an open PJ should feed your motor enough but some builds with an aggressive (good) dome setup and certain pipes will need lots of fuel. Are you positive you do NOT have a fuel delivery issue? Do you have big bowls? Carbs setup for pump or gravity feed? Definately make sure you have the carbs as well as all powerjet lines clean and the pj lines should be short. These are all good points. I've seen guys trying to run pumper carbs as gravity and gravity as pumpers. But I agree with Radar, Id take a good look at the entire setup before making drastic changes. Also, how far are you running, and where does it "run out of fuel"? Quote Link to comment Share on other sites More sharing options...
oberlez Posted May 6, 2015 Author Report Share Posted May 6, 2015 My fuel lines are clear of debrisand my PJ lines are short. I have big bowls. I bought them from a guy off here and I think they are for gravity. They also have one side of the float cut off of them (guessing to fit more fuel in the bowls?) I'm running 300ish feet and at WOT it sputters. Check the plugs at end of run and they do not show any signs of being too rich. I have the drive line PJs off eBay.. Can you drill these ones out? Quote Link to comment Share on other sites More sharing options...
JTmachining Posted May 6, 2015 Report Share Posted May 6, 2015 If ur carbs need more fuel flow to the bowls ur going to need a pump set up 2 Quote Link to comment Share on other sites More sharing options...
n2otoofast4u Posted May 6, 2015 Report Share Posted May 6, 2015 My fuel lines are clear of debrisand my PJ lines are short. I have big bowls. I bought them from a guy off here and I think they are for gravity. They also have one side of the float cut off of them (guessing to fit more fuel in the bowls?) I'm running 300ish feet and at WOT it sputters. Check the plugs at end of run and they do not show any signs of being too rich. I have the drive line PJs off eBay.. Can you drill these ones out? Post a pic of the carbs Quote Link to comment Share on other sites More sharing options...
oberlez Posted May 6, 2015 Author Report Share Posted May 6, 2015 I don't have a picture on me at this moment. What were you wanting to see? Quote Link to comment Share on other sites More sharing options...
oberlez Posted May 6, 2015 Author Report Share Posted May 6, 2015 If ur carbs need more fuel flow to the bowls ur going to need a pump set up Think this would solve my problem? What kind of pump do I need, where do I get one, how does it hook up, how much are they, etc. Please help Quote Link to comment Share on other sites More sharing options...
n2otoofast4u Posted May 6, 2015 Report Share Posted May 6, 2015 so even after everyone advised you to buy new, you bought used and now you're having issues, and don't really know what you bought? http://bansheehq.com/forums/index.php?/topic/181114-39pwk-alchy-carbs/#entry1717736 1 Quote Link to comment Share on other sites More sharing options...
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