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Click on each thumbnail for a larger picture - turn off your pop-up
stopper, they will be in a second window!
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Just to give you a taste, this is a picture of one of Rex Messner's engines. Eventually mine will look like this!!
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Unloading the Olds from my wife's 1/2 ton Chevy. It made the truck squat for sure!
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Temporary resting place in the pole barn. To the left you can see the Olds pulley that I also bought for the engine.
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FIRST WORK
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Well, a year passed and the Olds still sat in the pole barn. Other projects came and went and the Olds still rested
rather out of sight, out of mind. So, last winter after I got my shop insulated and finished off I decided that if
I was going to work on it I should put it in the shop so I looked at it every day! In the spring I sorted through
the parts and one of the obvious things that needed attention and was a small step toward restoration was the valve
cages. Both of them had badly worn valve guides and the valve stems were badly worn and pitted as well. On the
exhaust valve guide I decided to make a sleeve as the hole was so badly worn that it was not practical to make
a new exhaust valve stem that large. The pictures below show the progress on the exhaust vave cage. Picture #1
shows the cage in the mill where I milled off the top then bored it to 1/2" diameter to accept the sleeve. Picture
#2 shows the cage in the lathe where I refaced one of the two sealing surfaces where copper O-rings go. Picture
#3 shows the cage ready to accept the sleeve and the sleeve. Picture #4 shows the completed cage with the new
sleeve pressed in.
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DISSASEMBLY
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The engine sat through the summer and fall as other warm weather projects took my time. Finally in December I got
back to the engine and decided that the crank had to come out so I could get it straightened. That meant that
the flywheels had to come off and I wasn't looking forward to that as they seemed to be very rusted on. (in fact
I need to reface the flywheels as they are very very pitted). For about a week I soaked the flywheel hubs and the
keys with PB Blaster to try to loosen things up. I then drilled and tapped the keys (which are tapered) and, using
a slide hammer removed them without too much effort which really suprised me! To my amazement both of the
flywheels came off the crank with only a small nudge! The insides of the hubs were oily which kept them free on
the crank - thank goodness someone kept the bearings well oiled in its life! The picture shows the flywheels
loose and ready to come off. I used the loader on my tractor to hold them up with a nylon lifting strap while
I pulled them off the shaft.
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The five pictures below are of the dissasembly of the rest of the engine. First the water hopper came off
(it was loose when I got the engine and had two twisted off bolts that will have to be dealt with). Next came
splitting the engine bed from the base which is also the gas tank. All four bolts which hold the two together
twisted off and will need to be drilled out. The inside of the gas tank is shown in the next picture - terribly
rust scaled but nothing rusted through. Following that are two pictures of taking the last parts apart - on this
engine the whole cylinder assy. comes apart from the engine bed.
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RESTORATION CONTINUES IN EARNEST!
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The cylinder needed quite a bit of work on the mill. There were four twisted off bolts on the bottom side
where the water jacket cleanout cover is and two on the top side where the water hopper attaches. Also, all
gasket surfaces needed cleaning up as they were quite rusted. The water hopper surface was very badly pitted
and after taking off 0.030" I decided to leave it there and just use permatex #2 when I assemble it. There
were still quite a lot of pits particularly on one side but there was an area all the way around that cleaned
up to make a good seal. I successfully milled and drilled out each twisted off bolt and re-tapped them.
Interestingly, all the bolts on this engine are 1/2"-12, not 13 as is standard today, but 12 threads per inch.
I needed a special tap to rethread the holes and found one at the local tool supply. I cannot as of this
writing (1/05) find a 1/2"-12 die to clean up the bolts.
One of the holes in the water jacket cleanout cover had been ruined somehow and was very oversize and rusted.
I cleaned the hole out of all loose rust and filled it with JB Weld. After letting it harden for a day I drilled
and tapped it, hopefully it will be adequate for the low torque required to hold the cover on. The pictures below
are of the cylinder on the mill table after working on the top side where the water hopper goes. The right
hand picture shows the water hopper surface, you can see the pits in it clearly. To the left is the intake valve
cage surface which cleaned up really nicely. I used a fly cutter to do all the surfaces, you can see it chucked
up in the mill.
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More to follow!
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