vro to non vro conversion need pump no.

[smkonwatr]

My 1985 70 hp. that I converted to mixed fuel 4 years ago is giving variations in fuel presure readings. When at idle the pressure will drop to 0 for a few seconds then jump to 1.5-2.5lbs,then it will drop to 0 and repeat. At 2500 rpm I get 4-7lbs. variation.
I would like to do away with the VRO pump completly is there a non-VRO pump for this motor? By the way I did a rebuild on this pump 2 years ago and it held steady readings than. I did try different gas tank and check the gas line connections.

 

[ezeke]

Re: vro to non vro conversion need pump no.

This link will help:http://forums.iboats.com/showthread.php?t=232538&highlight=70HP+fuel+Pump

Rick posted one with photos a while back, I'll see if I can pick up the link.

 

[ezeke]

Re: vro to non vro conversion need pump no.

Here:
http://forums.iboats.com/showthread.php?t=196810&highlight=70HP+Conversion

And Rick's picture:

 

[smkonwatr]

Re: vro to non vro conversion need pump no.

Thank you to all that helped me to this point. Today I purchased a fuel pump no. 438557 and will install this weekend. I will let you all know how things work out.

 

[smkonwatr]

Re: vro to non vro conversion need pump no.

Thanks for the help,I changed out fuel pump and am holding steady at 13/4 lb. @ 1000 rpm and 2at 3000.