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Seizing horseshoes

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K2-K6:

--- Quote from: McCabe-Thiele (Ted) on February 12, 2024, 09:21:09 AM ---To remove the carbon deposits in the pivot I soaked mine in oven cleaning gell for a couple of days, refreshing the gell after the first 24 hours when it had turned black.

--- End quote ---

It is exactly this that "seizes" them, oil going over critical temperature and baking into a harder sticky residue to stop movement.

Many engine from that period had been affected by such, with reformulation more obvious in products of early 1980s that show less susceptibility.  One of the most useful aspect of synthetics too, their vulnerability to high heat break down being moved substantially out of component latent heat operating range.

The chains are affected too, needing just pure oil flow through the pin/pivot sites to prevent captured oil there from passing critical temperature, the hi-vo primary an absolute copybook example of this working characteristic.

McCabe-Thiele (Ted):
I remember the days of  black sludge deposits all too well.

K2-K6:
Yes Ted, I've experienced it literally inches deep in chocolate fudge cake like consistency within early 70s car engine, particularly aluminium cylinder head that look to have a higher heat transfer to the oil near and around the combustion chamber "skull cap" areas.

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