Quote:
Originally posted by jclark
Glass Bead blasting the pistons?
I do not think this is a good use of this technology. In fact, using it on ANY interior ( al-u-min-ium ) facing part of the motor, is risking potenially little glass beads, that are wont to embed themselves into the aluminium ( and do! ), can loosen themselves and get squirted around the interior of the motor via the oil passages, with possible deliterious effects.
Just don't do it.
2) "Campher the oiling holes so that they really take in some oil mist."?
What, to keep mosquitos off the oiling holes? To make it smell better ( some people *like* the smell of campher [ camphor ] - I do )? Just doesn't sound like it has any value in this discription of engine work.
I suspect some unclear technical writing here, which has bad portents for those literalists ( me! ) and anyone else who might try this at home.
jeff
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A casual search of the web will show that glass bead peening of piston skirts & other engine internal parts is a widely used technique. I guess Dr. C was foolish enough not to explicitly state that you have to clean up the pieces afterwards.
Also by chamfering the holes the surface area is increased substantially compared to that of a cylinder. This radiused edge will efficiently collect oil.