Always wash the bores with hot soapy water. (test cleanliness with white oiled rag rubbed up and down the bores). This process is best achieved using a soft brush.(bottle type brush).

The reason for using hot soapy water is that no other method removes the abrasive residue left in the hone finish on a cylinder bore.Some times the bore has to be washed several times before an acceptable standard is achieved. The method of checking this standard is to rub a clean oiled white rag up all the bores. The rag must have no trace of black hone residue before the bore can be called clean.
Another area that is mistakenly neglected is the inside of the crankcase area. this area is very rough cast finished and tends to trap the honing abrasive residue. This area should also be rechecked with the white rag test to ensure a complete clean. Again the block should be blown off with air giving special attention to the tapped threads. All machined surfaces should be protected from surface rust by the application of a rust inhibitor. (e.g. RP7)