VRO pump replacement with standard fuel pump (a How To)

[THEFERMANATOR]

Originally Posted by spareparts

Ferm, i ran that style pump on my 120 for about a year before I sold it, best of my knowledge its still running the same set up(saw it at a shop a little over two years ago).I put a fuel pressure gauge on the motor and maintained around 2 psi(cheap vacuum/pressure gauge) at wot. I don't know why your set up didn't work and mine did, but I've seen where you've mentioned it several times. On that line of thinking I figured a mercury v6 pump should work just fine in this application. The Mercs are loopers and the single pump supplies more than enough fuel for a 200. I've wondered if the johnrude pump is enough considering they ran more than one on the cross flow V6 motors,The merc pump should be the way to go. Stink, when your done, hook up a fuel pressure gauge and run it to make sure its enough

I know my 140 fell flat on it's face with one. I put the same pump on a 70 EVINRUDE and it held 4 PSI no problem at WOT. My 140 was in good shape to as I had just freshened it up and it had 145 PSI of compression in it when I did it. I have also wondered if the MERCURY pump would work as it is pretty small and feeds a big engine. Or the YAMAHA pumps that looked just like the OMC. Then again my 250 YAMAHA had 3 pumps on it.