So I'm not really understanding the purpose of these ? Are they only needed for cases that are bored oversize for big bores ? Are they installed before the cylinder diameter in the case is machined ? Why dimple the cylinder side if it will be machined away ?If that is the case, then what is done with the open areas in the cylinder base, wouldn't you want fillers for those too ? Never seen them, but are they available ? If the base gasket can seal the base of the cylinder, then why wouldn't it seal the case also ?
desertR