Newly rebuilt carb, same problem...UPDATE

I'm off to do a project but will keep in touch. Let me just repeat my concern about lifters. I want you to be sure the CAM surfaces weren't damaged by all the pressure on the valve train. Hopefully a lifter or a few (and possibly none) will be all you need. I just don't want you to get it all back together and find you need a camshaft.
I was working on a Buick V6 that had the oil pump seize up. When it did, it broke the gear on the end of the camshaft. Turned out that this particular cam has the timing sprocket and the cam drive all cast into it as one piece. When I finally got the cam out, showed it to a mechanic friend. He pointed to one lobe and said "Good, that cam was shot anyway. I'd been after a lifter noise and thought it was the oil pump and not enough oil flow or pressure. Turned out it was a worn out camshaft. And yes, the bottom of the lifter was also buggered up.
 
Lifters look real good, surprisingly. I am thinking maybe it got hydrolocked, busted the rods right away, and then no wear on anything. I did notice "burn marks" on the head and valve cover right in between the 2 cylinders, 4 and 6, where the problem was. The valves went back in nicely, lapped 'em good. Just gonna hope for the best for this season and maybe a full rebuild next year.

Charlie, the boat does seem a bit underpowered for this boat, but, it could have been because of this problem. I shall see.
 
Hydrolock won't bust PUSH Rods of its own. It WILL bend CONNECTING Rods and that's the last thing you want. When you reassemble your exhaust, the very best gaskets come from MerC. They are a graphite and laminated metal. But very recently SIERRA did a couple things. First, they absorbed OSCO. And, they've started shipping their exhaust parts with the good graphite gaskets like MerC. That tells me you should be able to get gaskets that are MUCH better at keeping salt water off the surfaces of the wet joints.
 
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