"Duane Lee" wrote in message
...
I have a 1994 40hp Johnson which has the oil injection system on it. That
system has failed and I am now replacing the powerhead. When I put it back
together I would like to eliminate this oil injection system and go to a
"gas/oil mix". I understand that this is possible and that Johnson has
even published this conversion within there 1994 technical service manual.



Can anyone help me by providing me with this information? Is there any
website that might have it? Does anyone have a manual and would be kind
enough to copy the info and send it or email it to me.



If the "VRO" failed, there would be nothing left to use on your powerhead,
because even the cylinder scoring would be deeper than the .030" overbore
that the factory allows. The crankshaft would be trashed as would all the
bearings and races. The rods, wristpins, and needle bearings would have
melted together for lack of lube. Imagine what a motor would look like if
you normally premixed the fuel and one time forgot to add oil !!!!! It would
be an absolute mess internally, and froze up most likely.

If the above description does not completely describe your powerhead damage,
then it did not have a "VRO" failure. Read the following article link and
look at the colored cut-a-way of a "VRO" pump assembly to better understand
the system and the myths that the uneducated perpetuate about the "VRO".
http://continuouswave.com/whaler/reference/VRO.html

If you do want to eliminate the oil injection, you have 3 options. First you
can use the pump as a fuel pump only and block off the oil fitting and
disconnect the wiring from the "VRO" and the oil tank. Second, you can
purchase the fuel pump conversion kit that Johnson/Evinrude sells. It looks
like a "VRO" pump without the oil pump piston and housing and no electronic
warning system on the back of the casting.

Thirdly, you can talk to a sharp parts person or a savvy mechanic and have
them order you a 48hp fuel pump and all the related plumbing, hoses,
fittings, etc. needed to convert your motor.

Actually you do have a 4th option, and that is to find someone who knows the
motors and the "VRO" system and find out what actually happened to cause
your powerhead problem, then correct it.

Bill Grannis
service manager