I've got a friend who has asked me to restore his late '60s johnson 6. I do have many hours experience with different motors, including my '58 7.5 sweetheart.
Long story short, my friend entrusted the 6 to his cousin who promptly submerged the poor motor one day, then left it sitting in the yard for over a year. Now that I have my hands on it, I am supposed to restore the motor to relatively new condition. In the eyes of my friend, mechanical soundness is far more important than appearance. Though I will throughly clean the motor, I am not planning to do any painting, etc...
On to the guts of the matter:
Knowing what I do about salt water, I immediately pulled the head and saturated both piston decks with PB blaster penetrant as well as the intake to the carburetor. Since then, I removed every component right down to the crankshaft. I have the pistons out (getting 'em out was fun). The connecting rod bearings were corroded to the point where they were seized to the crank. I got them off and saturated all teh parts in engine cleaner. After cleaning the salt deposits off, i sprayed everything with a light coat of lube.
Now that it's time to assess the parts, replace parts, and re-assemble, i'm trying to decide what to do. Any advice whatsoever is much appreciated. Keep in mind, I don't want to break the bank but at the same time, the owner did say that he will pick up the tab no matter how steep. he is very attached to the motor.
From what I know now, I need to do the following:
Replace:
Crank (chrome has been compromised on journals)
Pistons
rods
rings
rod bearings
reeds (they're shot)
possibly carb... some jets are very very corroded
Ignition
the (un-replaceable?) bearings of the crank case look okay
Now that I have a parts washer moved-into my new shop, I can start really cleaning and soaking things. Obviously, a clearer synopsis of the motor will be given.
I will get the numbers off the motor tomorrow, as well as some other info.
Sorry to ramble on but there is a lot to tell. I'm considering buying a used powerhead with decent compression. All opinions are appreciated.
Thanks
Tator
Long story short, my friend entrusted the 6 to his cousin who promptly submerged the poor motor one day, then left it sitting in the yard for over a year. Now that I have my hands on it, I am supposed to restore the motor to relatively new condition. In the eyes of my friend, mechanical soundness is far more important than appearance. Though I will throughly clean the motor, I am not planning to do any painting, etc...
On to the guts of the matter:
Knowing what I do about salt water, I immediately pulled the head and saturated both piston decks with PB blaster penetrant as well as the intake to the carburetor. Since then, I removed every component right down to the crankshaft. I have the pistons out (getting 'em out was fun). The connecting rod bearings were corroded to the point where they were seized to the crank. I got them off and saturated all teh parts in engine cleaner. After cleaning the salt deposits off, i sprayed everything with a light coat of lube.
Now that it's time to assess the parts, replace parts, and re-assemble, i'm trying to decide what to do. Any advice whatsoever is much appreciated. Keep in mind, I don't want to break the bank but at the same time, the owner did say that he will pick up the tab no matter how steep. he is very attached to the motor.
From what I know now, I need to do the following:
Replace:
Crank (chrome has been compromised on journals)
Pistons
rods
rings
rod bearings
reeds (they're shot)
possibly carb... some jets are very very corroded
Ignition
the (un-replaceable?) bearings of the crank case look okay
Now that I have a parts washer moved-into my new shop, I can start really cleaning and soaking things. Obviously, a clearer synopsis of the motor will be given.
I will get the numbers off the motor tomorrow, as well as some other info.
Sorry to ramble on but there is a lot to tell. I'm considering buying a used powerhead with decent compression. All opinions are appreciated.
Thanks
Tator
