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  Removed VRO system from my 'rude 50 HP

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Author Topic:   Removed VRO system from my 'rude 50 HP
4whaler posted 03-04-2003 05:11 PM ET (US)   Profile for 4whaler   Send Email to 4whaler  
Ok I did what the owner/mech at my marine shop said to do and pulled the VRO system out of my '93 50HP Evinrude and mixed a 50:1 oil ratio into the gas tank of my 15ft GLS I. He said that I and the engine would be much happier? Ive heard this before and his suggestion clinched it. It wasn't too hard once I looked at the manual. I cut the oil hose off the nipple under the gas nipple on the front of the motor and capped and covered it. Then went on the backside of the entry block that holds the nipples and pulled the hose off it inside and plugged with a fired .223 brass cartridge case until I can get a 1/4 bolt to stick into the hose and clamp. I then pulled the two wires that were supposedly the oil warning horn wires and removed them and the oil hose and tank from the stern area. Still have to pull the clamp down bracket.
Next is the battery which I want to move forward under the helm console if possible. That way I have a clear stern. I haven't put it in the water to test it yet but do like the fact Im getting more space which is tight in a 15 with all I like to carry, especially when going SCUBA diving. Bottom line is I hope this wasn't a mistake, I can always put back give the engine survives this little experiment. Anyone else done this? Results?
prj posted 03-04-2003 05:21 PM ET (US)     Profile for prj  Send Email to prj     
Indeed 4whaler, many of us have done this and the discussion has created some spirited debate.

Pull up threads from the past 2 years or perform a site search using the key word "VRO" and you'll definitely find ample information and opinions.

flawton posted 03-04-2003 05:21 PM ET (US)     Profile for flawton  Send Email to flawton     
About 5 or 6 years ago, after scorching a cylinder to death due to oil pump failure (and warning horn faliure), we had the oil injection removed from our 91 johnson 40 (on a 79 13 sport). We had the powerhead rebuilt and since then we have had no problems what so ever (that little boat will scat). Be glad you removed it before it failed, you just saved yourself some $$$$ on a rebuild.
Born Free posted 03-05-2003 05:16 PM ET (US)     Profile for Born Free    
Ditto. After throwing a rod and $1500 later, I disconnected the oil injection on my 60 and haven't looked back.
Born Free posted 03-05-2003 05:17 PM ET (US)     Profile for Born Free    
Ditto. After throwing a rod and $1500 later, I disconnected the oil injection on my 60 and haven't looked back.
Born Free posted 03-05-2003 05:17 PM ET (US)     Profile for Born Free    
Ditto. After throwing a rod and $1500 later, I disconnected the oil injection on my 60 and haven't looked back.
Born Free posted 03-05-2003 05:17 PM ET (US)     Profile for Born Free    
Ditto. After throwing a rod and $1500 later, I disconnected the oil injection on my 60 and haven't looked back.
Born Free posted 03-05-2003 05:18 PM ET (US)     Profile for Born Free    
Ditto. After throwing a rod and $1500 later, I disconnected the oil injection on my 60 and haven't looked back.
where2 posted 03-05-2003 05:41 PM ET (US)     Profile for where2  Send Email to where2     
My '85 15' Sport with 70Hp Johnson came with the VRO disconnected. Mix the oil, and away you go... Mine's been working on mixed since I bought it in '96... Never have to think about filling the oil tank. Just remember to mix the oil at fillups.

4Whaler: you should see the setup the previous owner did to my 15' Sport. I've got a pair of 6 gallon tanks, plus the battery, ALL stuffed under the rear thwart seat (raised the seat 2" to fit the battery box). The rest of the floor in the entire boat is clear, other than the cooler I use to keep the PFD's.

Al_A_Buy posted 03-05-2003 05:46 PM ET (US)     Profile for Al_A_Buy  Send Email to Al_A_Buy     
Is the VRO system on the Evinrude different than what is on the Johnson? On my Johnny, the VRO pump is also the fuel pump. Logicaly with implementation, if the VRO pump fails the motor would stop due to fuel starvation.

Further, to affect the modification described by 4whaler, wouldn't you have to install a "pancake" type fuel pump?

Al W.

Bigshot posted 03-06-2003 09:48 AM ET (US)     Profile for Bigshot  Send Email to Bigshot     
again....pumps RARELY fail. If a pump does fail it normally ruins all the cylinders, not one. Ruining one cyl or 2 that share the same carb is usually due to a carb lean situation that blows the cyl(s). I know many mechanics and since the early VRO's 1983-1985? there has been little or no issues with VRO pump failures causing engine damage.
Chap posted 03-06-2003 02:42 PM ET (US)     Profile for Chap  Send Email to Chap     
I have been told similar information as BS relates. I believe the pumps are now referred to as OMS, Oil Metering System?, and not VRO. My OMS pumps have been fine but I hate the separate oil tank.
My point is that Ficht might have a ways to go to overcome a stigma that can last 20 years or more, even if you change the name and have a superior product.
where2 posted 03-07-2003 12:37 PM ET (US)     Profile for where2  Send Email to where2     
I'd have left the VRO/OMS system on the boat, if it had been like a Yamaha and built under the engine cover, rather than gobbling up my deck space. OMC missed the boat there... (pun intended!) In a 15' boat, spare room for a 2 gallon tank sitting on the floor is at a premium. Especially when I can get the same result by pre-mixing and leaving the OMC oil tank in my garage... I understand 4Whaler's point about deck space.

BS is right though: the VRO pump got alot of bad press due to an alcohol fuel incompatibility problem in the early years. Once they fixed that hiccup, the VRO seemed to do everything they said it would.

NedsPoint posted 03-07-2003 12:54 PM ET (US)     Profile for NedsPoint  Send Email to NedsPoint     
When I first got my 86 (or 87?) 70hp Johnson, I was concerned about all the bad press the VRO system was getting. So I talked to my marine mechanic, a recently retired Certified OMC mechanic about replacing the VRO with an updated pump, or eliminating all together. He told me not to worry, keep it in. I've put about 300 hrs since buying used, no problems. When/if it blows, its time to repower anyway.
whalersman posted 03-08-2003 09:42 PM ET (US)     Profile for whalersman  Send Email to whalersman     
I agree with Bigshot and several other here about keeping the VRO...

A lot of bad press out there.....

I have owned my 1985 Evinrude 70 HP since 1985... Not many hours on her, about 600, but I have never had problem 1....... Never....... Not 1....

It would be much nicer if the Oil Tank was not external.... Merc, Yamaha, and a few others had the right idea.... Now E Tech I understand is following suit...

I Hate mixing Oil into the Fuel..... To me it is a real extra pain in the neck... That's why I liked the VRO system when I got it in 1985.... I wouldn't have anything else unless it was a 4 stroke..... and I am not sold on 4 Strokes yet even though I owned an 8 HP Evinrude for a little while....

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