Originally Posted by techinspector1
If you are going to scrape or wire brush the pistons, run each one up to top dead center to do it, then use a shop vac with a snorkel attachment to vacuum the crud from around the ring lands. I've done it many times. No shop vac? Use mom's or girlfriend's or wife's vacuum cleaner.
Be sure to hide it in a barrel so she thinks it's a shop-vac.