robert0762 Posted June 11, 2013 Author Report Share Posted June 11, 2013 Only if you're ghetto-rigging shit together... I dont want to tap a hole in the side of my cylinders to run a pump I do not need. If I was gonna run alky and need a pump then thats a different story. Quote Link to comment Share on other sites More sharing options...
robert0762 Posted June 11, 2013 Author Report Share Posted June 11, 2013 You could have saved yourself a lot of work and just drilled the hole through the needle valve housing a little bigger, then counter-sink it to give the needle valve a surface to seal on. Also, don't forget to remove the angled supply hose barb and install a straight one. The factory hose barb that comes on pumper carbs will screw you over if you are trying to gravity feed them. If you look at the pics of the gravity seat vs. the pump seat you will see a groove cut around the outside and two holes drilled through it. The pump seats do not have this. There is no way to get the seat out and modify it without trashing it. So just drilling a hole and counter sinking it will not work. That would be "ghetto-rigging" it. Pumper seat on the right Gravity seats Quote Link to comment Share on other sites More sharing options...
robert0762 Posted June 11, 2013 Author Report Share Posted June 11, 2013 Makes me wish I didn't sell my 39 pumpers! I tried to sell mine no one would buy them sooooo...... Quote Link to comment Share on other sites More sharing options...
dave5.0 Posted June 11, 2013 Report Share Posted June 11, 2013 I went through the same deal. Got hosed on pumpers that were labeled gravity. Then couldn't give the damn things away. Finally almost did then pieced together a set of gravity feed. What a pita. Thought about doin this but wasn't sure I wanted to source the brass stuff. Woulda been easier in the long run prob. Quote Link to comment Share on other sites More sharing options...
robert0762 Posted June 11, 2013 Author Report Share Posted June 11, 2013 I went through the same deal. Got hosed on pumpers that were labeled gravity. Then couldn't give the damn things away. Finally almost did then pieced together a set of gravity feed. What a pita. Thought about doin this but wasn't sure I wanted to source the brass stuff. Woulda been easier in the long run prob. I came out significantly less then a new set of 39 's . Had fun doing it and hopefully help some other's out as well Quote Link to comment Share on other sites More sharing options...
KozyHeat Posted June 11, 2013 Report Share Posted June 11, 2013 Oah yeah, totally a great idea when your on a budget, not hating on that at all - like you said it could be an easy sourced carb & cheap. 16 miles today on the banshee went fine. I got to ride to work I should get some temp indicators... or atleast egt's Quote Link to comment Share on other sites More sharing options...
robert0762 Posted June 11, 2013 Author Report Share Posted June 11, 2013 Oah yeah, totally a great idea when your on a budget, not hating on that at all - like you said it could be an easy sourced carb & cheap. 16 miles today on the banshee went fine. I got to ride to work I should get some temp indicators... or atleast egt's So you get to ride on the street huh? Bet thats hell on the gas pump. Wish we could make em street legal here. I would love to rip a banshee around the streets legaly. Quote Link to comment Share on other sites More sharing options...
bansheedemon Posted June 12, 2013 Report Share Posted June 12, 2013 Yeah. It would be sweet to run them on the street. But stopping at every gas station to fill up would suck. Quote Link to comment Share on other sites More sharing options...
Wheelman Chassis Posted June 12, 2013 Report Share Posted June 12, 2013 Nice job robert! Can you measure the size of the hole in a pumper carb vs the gravity carb for me by chance? Quote Link to comment Share on other sites More sharing options...
robert0762 Posted June 12, 2013 Author Report Share Posted June 12, 2013 Nice job robert! Can you measure the size of the hole in a pumper carb vs the gravity carb for me by chance? Which hole do you need measurements on? Quote Link to comment Share on other sites More sharing options...
KozyHeat Posted June 12, 2013 Report Share Posted June 12, 2013 Dirt Roads*. I got street tires on my setup currently so I have poor traction... like riding on glass. Yeah its hard on the gas pump but nothing beats riding home after work. Quote Link to comment Share on other sites More sharing options...
KozyHeat Posted June 30, 2013 Report Share Posted June 30, 2013 I did some trail riding this weekend and after some spirited climbing/hills (2nd gear spinning & clutching up a long hill) I wouldn't be able to slip the clutch enough to take off if I stopped... It literally runs out of gas. The 1.5 pump needle is definitely small for hill climbing. For street / dirt it is just fine for 60mph crusing gravity fed. I think its when the stock tank gets to about 1/2 full as it didn't do it from the get go. food for thought on this topic. Quote Link to comment Share on other sites More sharing options...
DW28 Posted June 15, 2018 Report Share Posted June 15, 2018 Gonna dig this one up. Are the seats still available? Does an oring go in the grove, or no? Thanks Quote Link to comment Share on other sites More sharing options...
Tedder Posted June 15, 2018 Report Share Posted June 15, 2018 https://www.bansheehq.com/forums/index.php?/topic/181056-redline-racing-pumper-carb-mod/ Quote Link to comment Share on other sites More sharing options...
DW28 Posted June 15, 2018 Report Share Posted June 15, 2018 (edited) Thanks! Different direction that I was wanting to go, though. I bought a “set” that wasn’t. One is pumper, and one isn’t. Was considering converting the pumper to gravity. Might just chalk it up and buy a real set. Edited June 15, 2018 by DW28 Quote Link to comment Share on other sites More sharing options...
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