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Pressure Vessel question.

Postby 064c9267ad2b4837a094d0a975b48766 » Mon Jul 26, 2021 2:48 pm


I have a small engine I would like to rebuild. It's a single cylinder air cooler engine originally designed for a pump. The engine is seized, replacing the engine would greatly reduce the value. So we tried penetrating oil to no avail.

I had an idea but am not sure about the science behind the process. If we could find a pressure vessel big enough to place the engine inside, fill the vessel with penetrating oil and pressurize it, would that force the oil into places that normally wouldn't be reached?

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Re: Pressure Vessel question.

Postby rmarz » Sat Aug 28, 2021 11:57 pm

064c9267ad2b4837a094d0a975b48766 - Penetrating oil is very good at reaching any interfaces, no matter how small. My concern is that the seized condition has actually created a metal-to-metal bond similar to 'stir' or 'friction welding'. Subjecting the parts to a high pressure oil treatment is not likely to work. Good luck with other mechanical attempts to break the piston or bearings loose.

Rick Marz

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