Flex hone

viewtopic.php?f=51&t=588&p=869&hilit=+hone#p869

viewtopic.php?f=53&t=2795&p=7240#p7240

a 220-240 grit with lots of lube flow is correct for a cast ring, a 280 grit will work if that's all you can get, but get the style of hone with the 3-4 expandable parallel stones not the dingle berry hone

BTW

dust rust that appears almost in seconds on a completely clean engines easily wiped off with a lint free rag soaked, dripping wet in a mix of 75% diesel and 25% marvel mystery oil, and a cup of this stuff (BELOW) per gallon, as the mix absorbs water but prevents rust from forming

http://www.grizzly.com/products/Primros ... -Oil/H8256

just do it where theres no ignition sources and over a large drain pan
 
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