Rusty Crankshaft Repairable?

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gunnag

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IM helping a friend restore a 72 Combat basketcase, the crankshaft is quite rusty as are the crank pinion and oil pump worm, see pic.

I wad wondering if this crank salvageable ? I guess the journals might cleanup with a regrind?

All info welcome:)

Rusty Crankshaft Repairable?
 
Do you or your friend own a boat? If so, you've gat an anchor.
 
The rust should come off with a simple home made electrolyze bath. I used it on many of my old tractors projects with great results. Probably still need machining on Journals.
 
Do you or your friend own a boat? If so, you've gat an anchor.
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lol :lol:

Yes I know its not in great condition but figured that with some bead blasting and a regrind it might be salvagable.

I guess the main issue is whether a regrind (-40) would clean up the journals, I guess the rust may have gone too deep? Also the oil feed quill will need cleaning up which hopefully will not cause loss of pressure.

If it is salvageable then it would probably get crack tested and rebalanced at the same time.
 
Great question, how far gone is gone?
Keep us up to date on your progress/decision.
 
Is the alternator end OK? It looks a bit short to me! Could just be the camera aggle I guess.

Bob.
 
Bobolink said:
Is the alternator end OK? It looks a bit short to me!
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Yes, you're right, the rotor spigot has been shortened and looks to have been re-threaded!
 
Could be an optical illusion as the bearing is still on the crank making it look short.
 
Ron L said:
Could be an optical illusion as the bearing is still on the crank making it look short.
Click to expand...

I doubt it Ron, as there should be a plain section between the engine sprocket taper and the threaded end for the alternator rotor to fit on?
 
I looked around for specs on the overall length of a crank, but could only come up with this picture of a Mk lll crank:
Rusty Crankshaft Repairable?


It does look a bit longer compared to rusty:
Rusty Crankshaft Repairable?
 
Perhaps rusty was once used in a track engine and the crank end was shortened to allow eliminating the rotor?

Seems best suited for boat anchor duty now, doesn't it?

Debby
 
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