1987 120hp V4 VRO to fuel pump conversion

[crabby3509]

I am planning on replacing my broken VRO-2 with a conventional pulse fuel pump on my 87 120 V4 anybody know the part number of the particular pump I need. Any help would be appreciated.

 

[kenmyfam]

Re: 1987 120hp V4 VRO to fuel pump conversion

You can use use a premix pump from a 1982 era V6 motor 150hp or above. That is what I did with my 1985 140hp. Run great ever since.

Look it up here.

http://shop2.evinrude.com/ext/index.aspx?s1=bf6ad09c53cead335fcfd8a6471c0f7f

Welcome to iboats.

 

[kenmyfam]

Re: 1987 120hp V4 VRO to fuel pump conversion

Here's a link to when I did mine.

http://forums.iboats.com/showthread.php?t=265363

 

[crabby3509]

Re: 1987 120hp V4 VRO to fuel pump conversion

Thanks Ken, I just wanted to make sure I was going to feed it enough fuel, are you running yours at 50:1 and if so any prob fouling plugs when you idle a lot.

 

[kenmyfam]

Re: 1987 120hp V4 VRO to fuel pump conversion

Thanks Ken, I just wanted to make sure I was going to feed it enough fuel, are you running yours at 50:1 and if so any prob fouling plugs when you idle a lot.

I have no problems whatsoever. It is a little smokier when trolling or idling for a while but never oiled the plugs up yet. Yes 50 to 1 it is. I checked the output of the pump and it puts out twice as much as it will ever need. I would suggest 2 pumps for the V6 models though as there are more carb's to feed !!!

 

[crabby3509]

Re: 1987 120hp V4 VRO to fuel pump conversion

Thanks again my VRO S*@# the bed this past weekend and I have been wanting to pre -mix any way I never have trusted it. Most of the guys I have talked too that run Outboards and commercial fish here in NC get rid of any kind of Oiling system right off the bat I guess it's one less thing to worry about on a two stroke. I will let you know how it goes, I got lots of fishing to do next week ( I hope)

 

[bkwapisz]

Re: 1987 120hp V4 VRO to fuel pump conversion

Hey Crabby- I checked the above link and the pump pictured does not have the 3rd hose connection so it needs to be hooked directly to the manifold. I plan on doing the same conversion to mine as you are but in the spring as here in Michigan we are nearing winter. I have researched this conversion quite a bit both here and elsewhere and the best part # I have come up with is 438559, which is for a late 90's motor and was used up to 125HP or so. Mine is a 100 so I assume this will work. This pump has 3 tubing connections: fuel in, fuel out, and pulse fitting, so it'll basically use the same hoses you have on the VRO although no oil-in fitting.

Best I have found so far is about $87 for the pump shipped. With the right amount of hosework and a small adaptor which you'll have to make, it should bolt up to the mount for the VRO and work fine.

Good luck!

 

[kenmyfam]

Re: 1987 120hp V4 VRO to fuel pump conversion

Hey Crabby- I checked the above link and the pump pictured does not have the 3rd hose connection so it needs to be hooked directly to the manifold. I plan on doing the same conversion to mine as you are but in the spring as here in Michigan we are nearing winter. I have researched this conversion quite a bit both here and elsewhere and the best part # I have come up with is 438559, which is for a late 90's motor and was used up to 125HP or so. Mine is a 100 so I assume this will work. This pump has 3 tubing connections: fuel in, fuel out, and pulse fitting, so it'll basically use the same hoses you have on the VRO although no oil-in fitting.

Best I have found so far is about $87 for the pump shipped. With the right amount of hosework and a small adaptor which you'll have to make, it should bolt up to the mount for the VRO and work fine.

Good luck!

Did you check my photos out ??? I have the 3 connections. Premixed fuel in, premixed fuel out and pulse line.

 

[kenmyfam]

Re: 1987 120hp V4 VRO to fuel pump conversion

Crabby, you have a P.M.

 

[tashasdaddy]

Re: 1987 120hp V4 VRO to fuel pump conversion

the pump Ken used will work fine. this is it. BRP Part Number: 0438559
Description: FUEL PUMP AY

 

[crabby3509]

Re: 1987 120hp V4 VRO to fuel pump conversion

Thanks for all the input guys found a pump locally will be catching some speckeled trout in no time.

 

[bkwapisz]

Re: 1987 120hp V4 VRO to fuel pump conversion

Did you check my photos out ??? I have the 3 connections. Premixed fuel in, premixed fuel out and pulse line.

I looked up the specs the dealer gave you on shop.evinrude.com and it didn't look like the -559 pump in the picture. I may have looked up the wrong one. I wasn't trying to say your's wasn't right, just trying to suggest a PN for the guy. In fact, I think you're the one who told me originally about the -559 pump in a thread I started when I first got here.


By the way (and yes I have studied your pictures) did you put a rubber insulator between the pump and the mounting plate you made? Looks in the fourth pic like there's 2 pieces there. Love the use of the cookie sheet. MacGuyver Genius!

 

[tashasdaddy]

Re: 1987 120hp V4 VRO to fuel pump conversion

actually that is not an insulator, it does not belong in the picture. it is the gasket that goes between the block and fuel pump, on a 2 hose pump.

 

[bkwapisz]

Re: 1987 120hp V4 VRO to fuel pump conversion

actually that is not an insulator, it does not belong in the picture. it is the gasket that goes between the block and fuel pump, on a 2 hose pump.

I meant in his photograph of the finished conversion, in picture #4. (Corrected the post above where I sited pic 3, and it was pic 4.) It looks as though there is an aluminum plate and then a black piece in between the fuel pump and the plate.

Here was the pic:

 

[kenmyfam]

Re: 1987 120hp V4 VRO to fuel pump conversion

I meant in his photograph of the finished conversion, in picture #4. (Corrected the post above where I sited pic 3, and it was pic 4.) It looks as though there is an aluminum plate and then a black piece in between the fuel pump and the plate.

Here was the pic:

Hey, my motor is famous !!!!

 

[kenmyfam]

Re: 1987 120hp V4 VRO to fuel pump conversion

From the right we have
Original bracket
Cookie sheet
Fuel pump

 

[bkwapisz]

Re: 1987 120hp V4 VRO to fuel pump conversion

From the right we have
Original bracket
Cookie sheet
Fuel pump

Just to clarify things here, was that a teflon cookie sheet?


Thanks for the info!

b

 

[kenmyfam]

Re: 1987 120hp V4 VRO to fuel pump conversion

Funny !!!!

 

[Faztbullet]

Re: 1987 120hp V4 VRO to fuel pump conversion

This type pump will not work as the 87 120 is a looper and it cannot even come close to supplying the carbs with enough fuel volume or pressure. The pump in post is for a V-4 X-flow. You can either :A) replace it with new Vro/Oms pump. (B) replace it with Vro style no oiling type but there is on $40 difference bewteen the two or (C) replace it with rebuildable style from Promarine ($192) in link below. This is same set up as the old mid 70's X-flow 235 hp with a low & high pressure pump.

 

[kenmyfam]

Re: 1987 120hp V4 VRO to fuel pump conversion

Mine works fine with way enough fuel delivery. Way more than what the motor can ever use.