Went to do a spot of fishing with the family today and got towed home by the coast guard.You just havent lived, till you've been towed home at least once in your life {thats what I told my kids anyway}. I have a 135 2L mercury[at least I think its 2L the bore is 3 1/8]mid 80s I think. I pulled off the heads and found a blow out in 1 cylinder.I am thinking about doing a full rebuild myself although I havent done anything this big before I do muck around a bit fixing things.Can anyone tell my roughly how long this might take and how much it might cost, or if I am just being silly to think about it.