I might look at the heads from a curiosity perspective, but since I'm not using them, I probably won't. I posted pics of the combustion chambers earlier in the thread. This has run this way for a long time (70 MPH boat last summer) and I'm pretty sure it was put back together this way. Still speculation at this point so it'll be interesting to see what the piston looks like.

It really does take away from the fun, doesn't it? I had a trip last year where the injection started to have some issues. I had run out across the Bay about twenty miles and the port engine started after-firing and then set an alarm. In the end it was a problem with wire routing and a bad knock sensor. The whole thing of "am I going to make it home" really takes the fun out of it. You nailed it for sure, they need to be right! 'Tom Z: worthy!

Thanks for the offer on the ring sets!

Yeah, my first thought when I saw your pics is something has been bouncing around in there - looks very much like a chunk of the ring was in there for a minute. Good luck with your builds!

I have not gotten the piston out yet. I've been splitting my time on work, home, kids/remote school, all that. At lunchtime I went and got the pan off and timing cover off, removed the timing set and cam. The inside was pretty clean looking. While I was at it, I took a magnet to the top of the piston. There's for sure some metal on the top of the piston. If I have time, I'll yank the piston and rod tonight and get pictures.

Ouch...







Bearings don’t look too bad. The two forward mains looked like some trash went through it (single wear line opposite the grooves shell) but the rest look okay. Crank seems happy.

This block has a lot of corrosion on the outside. It seems solid but it definitely went through a lightening phase. Hoping machine shop will give it the okay. The insides look great and outside of the one piston, the rest look almost new.

Damn!

Damn is right!

I asked around... no one has really seen one that bad. It's amazing the thing was still running well. Had I never took the head off, I wouldn't have known!

thats pretty bad!

so are you gonna put one slug in and cross your fingers?!

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I don’t like doing things half assed so it’s down to the bare block. Everything else looks great so I’m going to carry it over to the machine shop Monday to give everything a once over. I’m going measure bores, rods, etc over the weekend. It looks like I can get away with a hone and deck, swap the piston and install new rod bolts/resizing if needed.

If I can get around to it later tonight, I’ll grab pics of the rest of the bearings and the piston/rod assemblies.

It almost looks like the ring stuck to the cylinder wall. Did it sit a long time without fogging oil?