natas Posted March 22, 2010 Report Share Posted March 22, 2010 so do you just run fuel pumps on alky? or can you run them on gas? I have a 7 mil stroker 443 with 40mm lectons. Thanks in advance Quote Link to comment Share on other sites More sharing options...
shanYE west Posted March 22, 2010 Report Share Posted March 22, 2010 so do you just run fuel pumps on alky? or can you run them on gas? I have a 7 mil stroker 443 with 40mm lectons. Thanks in advance you can run a pump on anything... but its not always needed. Fuel supply shouldn't be a issue on that build with gas. But make sure you have needle/seat for gravity feed. Quote Link to comment Share on other sites More sharing options...
natas Posted March 22, 2010 Author Report Share Posted March 22, 2010 you can run a pump on anything... but its not always needed. Fuel supply shouldn't be a issue on that build with gas. But make sure you have needle/seat for gravity feed. Thats the thing just rebuilt carbs swaped over to gravity feed and gas needle . idles fine runs at low speed fine but once i get on it it starts to choke. it might be a little to rich.also i have 19cc big bore dome should i swap them for a different size ? Thanks for any help Quote Link to comment Share on other sites More sharing options...
shanYE west Posted March 22, 2010 Report Share Posted March 22, 2010 what was your squish and compression? Quote Link to comment Share on other sites More sharing options...
natas Posted March 22, 2010 Author Report Share Posted March 22, 2010 I haven't checked that yet. Just pulling the head off now.what should the compression be at 4000 feet and 19 cc domes Quote Link to comment Share on other sites More sharing options...
natas Posted March 22, 2010 Author Report Share Posted March 22, 2010 I haven't checked that yet. Just pulling the head off now.what should the compression be at 4000 feet and 19 cc domes .little more info on it.the cheetah cub was just re buckled and brand new blaster pistons from k&t performance Quote Link to comment Share on other sites More sharing options...
natas Posted March 22, 2010 Author Report Share Posted March 22, 2010 Nicklsiled not buckled Quote Link to comment Share on other sites More sharing options...
Alex29573 Posted March 29, 2010 Report Share Posted March 29, 2010 i dont know guys but i think all Kiehins come with the same needle/seat. If you look at the PWK parts list there is only one part number for needle/seat. I also know someone that runs a set of PWKs off of a snowmobile that used a pump. The type of carb that comes with the fuel inlets turned down instead of up http://www.sudco.com/Diagrams123/exppwk.gif Quote Link to comment Share on other sites More sharing options...
shanYE west Posted March 29, 2010 Report Share Posted March 29, 2010 i dont know guys but i think all Kiehins come with the same needle/seat. If you look at the PWK parts list there is only one part number for needle/seat. I also know someone that runs a set of PWKs off of a snowmobile that used a pump. The type of carb that comes with the fuel inlets turned down instead of up http://www.sudco.com...s123/exppwk.gif The OP said he was using lectrons.. The PWK carbs designed for snowmobiles use smaller orifices which restrict fuel flow in gravity feed applications.. If you put a pump on a gravity carb.. you'll play hell trying to get them not to overflow.. Quote Link to comment Share on other sites More sharing options...
BLOODRAGE Posted February 25, 2012 Report Share Posted February 25, 2012 The OP said he was using lectrons.. The PWK carbs designed for snowmobiles use smaller orifices which restrict fuel flow in gravity feed applications.. If you put a pump on a gravity carb.. you'll play hell trying to get them not to overflow.. i realize this thread is old but heres my question i have 2 carbs that are off a sled and when they are hooked up to gravity feed they keep over flowing.if i hook up the fuel pump will that make it worse? Quote Link to comment Share on other sites More sharing options...
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