View Full Version : Best fuel pump?
03-14-2004, 03:32 PM
Which fuel pump is best for the Mac 90?
03-16-2004, 04:17 PM
Jose, I have found that the round Mikuni fuel pump works fine. However you should use 2 pumps on the Mac.
03-17-2004, 05:51 AM
Rick: Why 2 pumps, how do I adapt the pumps? :o Do you have some picks of how to mount it,and which series number are the pump?
03-17-2004, 02:50 PM
you modulate the pump with crancase preasure. so you can dril the block and have 2 output lines or split the actual one and feed 2 mikunis.
Now jose you have 2 pumps right now, a mechanical and a evinrude pump. The problem is that with the mechanical you need preasere regulator, and you have it.
I would suggest get rid of the preasure regulator. eliminate the mechanical one and mount 2 mikunis in parallel. you have 1 carb so the round mikuni have 2 output. use the single out put pump but 2.
03-17-2004, 06:55 PM
Thank you Chuch!!
You are always a big help!! ;D
When I take the next class you explain me better.
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