1954 Johnson CD-10 rebuild

milkjub

Seaman Apprentice
Joined
Aug 16, 2011
Messages
41
1954 5.5 hp johnson rebuild 107.jpg
Check out my CD-10 that I bought for $100 off craigslist. I was told it was told it was in good working condition. It turned over and felt like it had compression so I bought it. After getting it home I replaced coils, points, condensers, wires, impeller, carb Kit, plugs, and power head gasket. After seeing it had nice blue spark I put it in the test tank. (I forgot to check compression). Tried to pull over but it would not turn even with starter off. I then pulled the head off, you know its not a good sign when you can pull the bottom piston out. Here is what I found. I am going to rebuild it, and ordered rings, connecting rod, and new gaskets and seals. 1954 5.5 hp johnson rebuild 101.jpg1954 5.5 hp johnson rebuild 102.jpg1954 5.5 hp johnson rebuild 103.jpg1954 5.5 hp johnson rebuild 104.jpgONFIG]197575[/ATTACH]
 
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HighTrim

Supreme Mariner
Joined
Jun 21, 2007
Messages
10,486
Re: 1954 Johnson CD-10 rebuild

Too bad, was probably run at 50:1 or the lower carbon seal assembly is damaged and,or not there.

Let us know how it goes
 

milkjub

Seaman Apprentice
Joined
Aug 16, 2011
Messages
41
Re: 1954 Johnson CD-10 rebuild

Who knows what they did to it. And yes the seals were missing so it must have ran to lean untill it threw the rod.
 
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