gasmask34 Posted September 20, 2014 Report Share Posted September 20, 2014 Is there a way to convert 39 keihin carbs from a fuel pump to gravity feed? Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted September 21, 2014 Report Share Posted September 21, 2014 It will require different needle and seat. Also, it's pretty typical of them to have goofy angle fuel inlets that may need changing. There was a write up long ago with all the little details. May be worth digging for it. Quote Link to comment Share on other sites More sharing options...
gasmask34 Posted September 21, 2014 Author Report Share Posted September 21, 2014 Thanks Quote Link to comment Share on other sites More sharing options...
Tedder Posted September 22, 2014 Report Share Posted September 22, 2014 The needle is the same on both a pump and no pump PWK. The seats are non-replaceable with the pumper having a smaller orifice. Like tricked said the inlets are different. Pumper style inlets point down. Not sure if it would always work but I knew of a guy who turned the inlets to point up with a crescent wrench and they didn't twist off or leak. Personally I wouldn't try to "convert" them. Quote Link to comment Share on other sites More sharing options...
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