If you fill the block a damaged sleeve would have to be bored out, and I think replacing a bored out sleeve might be problematic.
Not sure of your concern here, as the only time this really would be problematic is in the instance of 'wet'-sleeves. Otherwise, other than perhaps a little less elastcity in the cylinders requiring a little more 'push' on installation and paying closer attention to the fitment. Otherwise the only real pain is the weight increase of the hole piece in handling; not so bad with aluminum blocks, but when someone brings in the cast iron, tall-deck, racing blocks filled,..............makes one wounder why I shouldn't change to the little four cylinder import stuff!
And I generally, with press-in type sleeves as typically encountered, we will bore them out, as this reduces the strain on the block casting and reduces damage to the existing cylinder bores upon removal.
Scott.
