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CB750/4 water damage to pistons

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Nurse Julie:

--- Quote from: SumpMagnet on December 17, 2018, 05:56:56 PM ---

One thing I am not sure about, though, is which model of Submarine was fitted with these engines....I mean..it did come out of a subamrine? yes?

--- End quote ---

No, no, you really must brush up on your product knowledge. This is the model fitted to the submarines (a totally different CB750/4 engine than the one above  :'()
We get some cracking examples through here  ;D

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ka-ja:
You all expect miracles, after all, it is complete apart from the odd piston ring.

Trigger:
Julie got this a little wrong it was number 2. Here is a picture before the barrels were removed and it was the only piston with a pond  ;D [ Guests cannot view attachments ]

Trigger:
Oxidation to any alloy causes pitting and not only on pistons.
Here are some pictures of a piston from a engine that had been rebored and then left for about 40 years, without been started. The oxidation had started and the rings had seized to the piston. If this engine had been started, the corrosion would of burnt off and the detonation would of caused a chain reaction  ;)
As you can see from the underneath of the piston it is untouched.


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MarkCR750:
Probably blend it out with some wet & dry and a bit of autosol eh Graham?

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