Grim reading, but at least you seem to be embracing the task sensibly.
Carl Harrison donated the club a pair of pistons from a 748 a few years back. (Among other parts.)
I polished them up and mounted them on a couple of trophies for the 25th anniversary weekender. It was only sitting outside the Sharnbrook Hotel in the full sunshine that we noticed that each valve pocket was crazed with tiny hairline cracks. I think it was Albie who spotted them?
So I'd had them for months and worked on them studying them quite close up at times during the polishing process and never noticed the cracks!
I just mention this to point out how hard piston damage is to see, but I guess you would probably use crack developer or some such anyway?
Fingers crossed.
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