Quote:
Originally Posted by MountainGarage
use a vacuum/shop vac next to the whole while you are drilling. Then put some wheel bearing grease on the tap to hold on to the shavings. Don't want cast iron shavings getting back into the cylinders some how. Not likely, but better to be safe....
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I didn't have much success using this method. After drilling the hole, I snaked a magnet in there (I bent one of those retractable magnetic get-stuff-outta-tight-places tools) and it picked up all of the shavings.