Home › Forum › Ask A Member › Evinrude 5520 5.5 hp pistons › Re: Evinrude 5520 5.5 hp pistons
Well let’s see here. The dowel pins are definitely driven the wrong way. You may be able to just quick punch them out, but you need to support the crankcase so as not to bend the edges. It takes a solid hit to dislodge them. A little heat may not hurt, but be careful about how much. How did you get the front half over the tapered cowls? That is usually the hard part! The block has thrown a rod at some point (JB Weld) or whatever glued up. A piece of something could have been left in the block from before and that’s where your score Mark could have come from? Hard to say. Looks like it might be heat also, but you will usually see more than one place on the Pistons if heat related. Cylinders should be out of round if over heated badly. I can barely make out the holes you refer to, but they are in the area of the drains of these blocks. That core plug that is missing is not a big deal. The other one would be.
Dan in TN