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Vro pump, pumps 1989 80 hp

G

gatorschaf

New member
"This is Bomb-a-deer's answer to not premix WTF I have a 1989 79 hp Evinrude and cannot see the reason behind this unit.(variable oil ratio)
1-Object is to expensive
2-The engineer who was assigned to make this object fit into a engine case that has no room for said object,has killed himself.
3-If said person owns a 2 cycle He must premix that is the LAW of 2 stroke
4-No other laws are acceptable"
 
"one thing that I see is that,

"one thing that I see is that, at low speed VRO considerably eliminates the smoke and smell of unburned oil, I pre-mix, but I have seen two equal motors one with VRO and one with out VRO and if you are trolling or spend lots of time on the no-wake zones, VRO might be a good thing as it modulated/controls the amount of oil needed at different speeds to match the lubrication needs of the motor, at low RPMs I think oil ration becomes as lean as 150:1….considerably much more less smoke and smell…along with less chance to foul plugs carbon, built up on combustion chambers, rings and top of the pistons…but I do pre-mix myself…"
 
"The VRO on my 1986 140 has ne

"The VRO on my 1986 140 has never been changed but if it ever goes a new one will take it's place.

It's not a big deal mixing a 6 gallon portable tank at 50:1, but it's a little difficult to "pick up" my twin 40 gallon belly tanks and give them a good "shake" as is recommended if you mix your oil/gas.

Additionally, since that motor runs an average of 200 to 300 hours per season if I save a couple gallons of oil (at 20 bucks plus a gallon) by letting the VRO mix things that results in money for extra gas which means more time on the water.

Most marine mechanics can probably count on one hand how many blown powerheads can actually be attributed to a VRO failure.

But probably the most important reason to leave it there is to use it as an excuse for owner neglect.

If it's gone who will you blame when you run old/dirty gas, clog a carb and toast your number 2 cylinder?

Even though a VRO failure would fry ALL your cylinders you say loudly at the dock "that damn VRO went and wrecked my powerhead" - many of your dockmates will nod in concurrance and you are relieved of your responsibilty in the matter...."
 
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