240 B21A build
I am building a B21. Not enough people love B21s, so I am going to hold the candle for them.
Below is a jig I made years ago, originally for cutting the tops off glass bottles, but it's useful for so much stuff! You can put it under heavy machines to wheel them around, and you can hold pistons with it while you drive out the gudgeon pins.
I measured the bores and pistons with a micrometer and a dial bore gauge and everything was in-spec (about half way between min and max marks) and not too much ovality in the bores so I just gave them a quick hone and then packed everything up to go to the machine shop for thorough cleaning and deck surfacing.
More to come, some of you will, I hope, particularly enjoy this build.