Last night I cleaned the carbon from the tops of the pistons, using aerosol Sea Foam, a scotchbrite pad and a rag, so I could examine the pistons. They came out pretty clean, but piston #1 has a small ding on it (hard to see in this photo…sorry I forgot to take a picture of it after I cleaned it):

…and piston #3 is damaged as well:




Piston #3 also had the heaviest coating of carbon on it. I wouldn’t have seen the damage (except for the obvious part by the “C”) if I hadn’t removed the carbon. So, what started out as a simple turbo rebuild has turned into something much bigger (and much more expensive). =(
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