surfgeezer Junior Member Jul 23, 2016 #1 Semi- porous blocks found inside the waternecks of a NOS set of iron 59ab heads installed on a new rebuild... What might they be? Attachments image.jpg 36.5 KB · Views: 110
Semi- porous blocks found inside the waternecks of a NOS set of iron 59ab heads installed on a new rebuild... What might they be?
M Midnightcaper Member Jul 23, 2016 #3 wonder if it is some type of storage material to keep mice of bugs out.
