JDP421 Posted July 12, 2014 Report Share Posted July 12, 2014 Got a mikuni fuel pump with 39mm pumper carbs someone wanna walk me through how to hook up the pump? Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted July 13, 2014 Report Share Posted July 13, 2014 You will need to drill and tap the intake on one of the cylinders. Insert a barb fitting and plumb a hose to the pulse fitting of the pump. Plumb the inlet of side to the petcock. Plumb the outlet to the carbs. You will also need to make sure your carbs have the needle and seat for pump set up as well. Quote Link to comment Share on other sites More sharing options...
SOUTHTHIRTY Posted July 13, 2014 Report Share Posted July 13, 2014 If your motor is already together. ..drilling the vac line in is challenging Quote Link to comment Share on other sites More sharing options...
m671054 Posted July 13, 2014 Report Share Posted July 13, 2014 Make sure the pulse line is able to drain back to the intake. If it has any dips fuel can collect and effect performance. I prefer locating the pulse line in the case Quote Link to comment Share on other sites More sharing options...
Starwriter Posted July 13, 2014 Report Share Posted July 13, 2014 When you drill aluminum, grind the bit like this. It will prevent the bit from diving in when it punches through. Quote Link to comment Share on other sites More sharing options...
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