I decided to start with the 56 Oliver. I gave the motor a quick
inspection and noted that it was missing a spark plug connector, so I went to the
automotive store and purchased two new spark plugs and connectors. Thinking that
this was all I needed to do turned out to be a bit too optimistic. As I investigated
further, an attempt was made to rotate the crankshaft. I was unable to make it budge
because the pistons were frozen solid. I thought about giving up right then, but
with some words of encouragement from Dick Gorz, museum curator, I continued. At
this point, I figured I had nothing to lose. I took the head off and a lot of debris
and corrosion came out. I eventually dismantled the entire motor and lower unit.
My first task was to extract the pistons from the block.
I took the block with the stuck pistons to several
automotive shops and they all looked at me like I was nuts (they are undoubtedly correct)
and really did not want to get involved. They did give me some advice however, they
said to soak the cylinders and pistons with penetrating oil and maybe that would
help. I soaked the cylinders for a day or so and then started to pound them out. In
my zeal to extract the frozen pistons, I managed to damage both the block face and the
connecting rods on both of the pistons (did I mention that I didnt have anything to
lose?). The night that I got the pistons removed, I received an article from Dick
about soaking the engine block in a molasses mixture. This apparently will eat away
the corrosion and free the pistons. If anyone has a similar situation with frozen
pistons, I would suggest the molasses method.
My second task was to fix the mistakes from my first task.
I contacted Paul Moneski, from Pasadena, Maryland, who was a great help. He
provided me with a shop manual, gasket set, impeller, lower unit seal and a few other
parts necessary for my project. He was also able to supply me with two connecting
rods that I desperately needed. One of my problems was fixed. The next thing
was to take the block and head to the machine shop for milling. The machinist
noticed pitting on the head face and suggested that the head be milled as well as the
block. He took .012" from the block and .010" from the head. He also honed
the cylinders. I needed to use the same set of pistons, as oversized pistons were
not available for this engine. I was able to purchase piston rings from Lee Holland
from Algonac, Michigan.
At this point, I am on a roll (yeah, right), so I started to
investigate the condition of the lower unit. The shifter was loose and did not
appear to be connected to anything. The battered propeller could not be rotated at
all. When I dismantled the lower unit, I discovered that the lower shift rod had
snapped in two and the bearings had suffered the same fate as the pistons. They were
also frozen. I was able to fabricate a replica of the lower shift rod out of
¼" steel rod and I took the propeller bearings to a shop for replacement.
I took the magneto to Willies Marine Service in Pasco,
WA. He specializes in older outboards, that is, old to most people. I consider
something from the seventies new! Willie took an interest in the project and tested
the coils and provided a couple of water line grommets for no charge. He said he had
only heard about Oliver Outboards but had never seen one. The coils tested out to be
in good condition. In the mean time, I had gone through the carburetor and fuel
system. It was one of the few items on the motor that seemed to be in decent
condition.
To get additional needed parts, I contacted Russ Larson of
Larson Outboard Service in Mead, Nebraska whose name I got from Paul. He was able to
supply me with a flywheel nut, a new propeller and a few other parts that had been missing
from the motor. Other than purchasing numerous stainless steel nuts and bolts to
replace corroded or missing ones, all I had left to do was to figure out how to build a
pivot tube and paint the appropriate pieces.
I went to the local scrap metal yard and found 1 1/8"
aluminum solid rod to replace the tube used in the original part. Not only would
this be heavier duty, it was my only choice in 1 1/8", so the decision was easy.
A flat piece of 3/8" thick aluminum provided the head (or top) of the pivot
tube. I was able to get some of this stock at the same scrap yard. Even with
my limited tools and limited skill (mainly limited skill), I was able to fabricate the
part I needed. I used the broken piece as a model. I purchased enough material
to make a pivot tube for the Wizard as well.
It was time to investigate the available paint and try to
match the Oliver green that was on the outboard. I went to the hardware store to
look for paint that resembled Oliver green without much luck. Then I discovered a paint
shop that not only custom mixed paints, but supplied it in spray cans as well. I
took the cowling to the paint shop and they were able to match the color exactly.
After all of the parts were painted, I attempted to assemble
the engine and get it ready to test. I had an interesting experience with the
installation of the pistons. I installed the pistons following the exploded view
of the engine (piston, rods, and
crankshaft) that was in the Operators Guide I had obtained. After the pistons were
placed in the cylinders and connected to the crankshaft, the head would not fit. At
the top of the stroke the pistons would hit the head. I had yet to install the rings, so I
took the block to a guy that works on my snowmobiles. He put the rings on and
installed the pistons. When I picked it up, the pistons were rotated 180 degrees from the
way that I had figured and from the way the drawing shows. I asked him about it and
he said the drawing was incorrect and went into detail about why the pistons should be
installed this way. He told me to go back and look in the spark plug hole of the
Wizard with a penlight to confirm. He was right and the drawing was wrong.
With the pistons installed correctly, I no longer had a problem with them bumping the
head.
I placed the motor on the back of my boat and put the lower
unit in a barrel of water. I cranked several times without success. Finally the
motor fired, and I felt like I had done it. Before I could enjoy my success, the
motor stopped running. It continued to act like it was not getting gas, regardless of
carburetor adjustments or anything else I could do. I suspected either the fuel pump or
some other problem with the carburetor. After all of the effort I had put into this
project, I decided to let a professional look at it and see if they could get it running.
Currently the motor is in good hands with Willie, so stayed tuned to the
"Museum" and I will follow up with the results.