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Vro to mech pump swap

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bwaybrown

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"I am trying to do a pump swap

"I am trying to do a pump swap from VRO to the standard style. I have a 92 johnson 70 hp. I have been told on this site that the 92 johnson 65 commercial pump is an appropriate swap. That part number is 0438557. Sierra and Mallory do not seem to make a pump version for this but the OMC version is still only 100 versus almost 400 for the VRO. I understand I will need to make some sort of bracket to mount the pump-I think I can figure that out and maybe use the old bracket from the VRO somehow. For this type pump is all I do is connect gas line in gas line out and line from the pulse limiter and I am done? Is the hardest part just making a bracket? Do i need to purchase anything else? I have the OMC manual but it really does not go into how the pump is mounted on the 65 commercial. Is there a 65 exploded diagram so I can see if that has a bracket I could purchase? If anyone can give me a little guidance I would really appreciate it. I don't want to order more than once, etc. Thanks all in advance."
 
"If not mistaken You should no

"If not mistaken You should not need a bracket. On port front side of the crank case there are 2 threaded holes, between them a plug(?). Those two holes fits the fastening screws of the pump. Pos #20, screws 0328717 x 2.
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I have looked and looked but c

I have looked and looked but cant find the holes. Maybe when I take out the VRO again I will better able to find something but the port front side of crankcase seems clean to me. Maybe it is only on the commercial 65's. I have a picture of the commercial 65 port side and see where the pump goes about midway down but when I look on my 70 its clean. No threaded holes. Thank you for the exploded diagram.
 
"I am trying to do the same th

"I am trying to do the same thing with my 1991 60hp Johnson and if anyone knows which pump and where to mount, I would greatly appreciate any help available."
 
"thgose engs ,in fact may not

"thgose engs ,in fact may not have the holes...u may need to go to the vro looking fuel pump,only."
 
"Or just make a simple bracket

"Or just make a simple bracket. It should even be possible to just drill two holes in existing VRO bracket to 'fix' it. That is why it has a separate pulse hose inlet, it is not dependable of the crank case original puls hole. To function it may even hang 'loose' which I would not recommend!
Reggie:
You may use the same pump as above."
 
That is what I am thinking of

That is what I am thinking of trying to do. Once I remove the VRO I can disassemble the pump and hopefully modify only the VRO bracket by possibly just bending it and drilling some holes to fix the new style pump. If I connect the pulse hose to the pulse limiter it should drive the pump? I think. Although maybe its just cheaper in the long run to buy the non oil vro. I don't know.
 
"If You look on the pick above

"If You look on the pick above, pulse limiter is not used on that pump, but does no harm leaving it there. Item #14 is a spring inserted into the pulse hose to keep it from collapsing. Just be sure You get a clean bend, no collapse, on the pulse hose."
 
I am going to use the new styl

I am going to use the new style pump and create a bracket and save a couple hundred. When I order the new pump do I have to buy a fuel pump service repair kit also? To get the spring and any other necessary items?
 
"Nothing else than the pump ne

"Nothing else than the pump needed. The spring inside the pulse hose, any spring might do that fits into the hose. Do not think the 2 screws mentioned to hold it to its original place is with the pump, but it need to be screws in the holes to keep the pump together, or the membranes will be damaged. Big gasket #6 is just a heat shield and not needed either."
 
You have outboard wreckers whe

You have outboard wreckers where you are i presume? there is a bracket that will bolt onto the crank case which will support the non vro pump if you can find one. You will need slightly longer 7/16 bolts to go through the bracket and into the crank case halfs
 
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