thanks to everyone for their input on my problem...I did use an engine degreaser and wire brush and cleaned the block as best I could....I'm going to do this again but this time I'll try using the brake cleaner and wire brush...while I agree that the problem might be the prep, I did do prep work last time...maybe the third time will be the charmer..thanks again to everyone for your input...I might look into a high temp primer..
The wire brush will likely absorb and spread any remaining contaminants into the pores of the cast iron. With the problems you have had I would strongly encourage getting a metal etch solution from the local auto paint store. Then etch prime,and paint away. Good luck
