starting rebuild on '94 Evinrude 175hp

[awthacker]

So the powerhead is finally torn down completely and I'm gonna try and put it back together. No internal damage, it just rusted up inside and froze up. To me, it looked like the wrists of the piston arms were what was so seized up that the crankshaft wouldn't turn. Four of the six piston arms were completely frozen. Four of the pistons also had to be pounded out with a hammer, two moved freely. The bearings where the piston arm connects to the crankshaft were all in pretty good shape already.

I've disassembled, cleaned, and reassembled each piston. The last piston was missing a bearing. I can buy the bearing and retainer set for $18 plus shipping, but does anyone have just one bearing like the one missing in the picture?

I'm gonna start cleaning the block this week and would like to get the crankshaft and pistons back in place. I'll post some pictures and questions as I go. I'm not 100% sure how the saltwater got into the cylinders, but I'll post some suspicious pictures and maybe you guys have some ideas. For now, here is the pictures of the piston arm, cleaned and ready for reassembly, less one bearing.