trailrider894
Recruit
- Joined
- Jul 30, 2017
- Messages
- 4
1988 Seaswirl Spyder 202 w/OMC Cobra 5.7l (a.k.a Small Block Chevy). Previous lake trip my impeller got ate up at some point and the boat got hot, maybe 240 ish? Unfortunately I was not driving at that moment. I smelled it and killed it. We stopped and I let it cool down. Wouldn't turn so I pulled the plugs and discovered water in cyl. 4,6 and 8. A pretty good amount too. Pulled the boat out, stopped at the first auto parts store and fogged the cylinders to prevent it from rusting. Got home and did a compression test. I was at 150ish on all 8 cylinders. Pulled the risers and exhaust manifold. The exhaust flappers were melted so I replaced them, new gaskets and reassembled. Assuming that the amount of water in there was a result of bad flappers. Hit the lake yesterday, boat ran hotter than usual but was stable at 220ish (normal is 175 or below). However, it would cool back down when idling or running near 1500rpm. It stayed steady at that all day. And ran great. Blamed it on bad gauge. Finally on the way back it started climbing a bit so I slowed down, immediately heard lifter tapping and smelled burning oil. Shut it off and it kept running (dieseling), I threw it into gear and bogged it out. There was a rubber smoke (belts maybe?) Coming out of the engine bay. I could smell burnt oil and it was dripping from the PCV's as well as steam. I then heard a whoosh like water going into the cylinders twice for about 2 seconds. Not sure which side. Checked the dipstick and no oil (was full at lunch). Pulled it out and pulled the plugs about an hour later with no water signs present. Checked oil again and It was a QT low (no water present). It would start, but would shut off seconds later. Compression was low in 3. (115), 7.(120),8. (130). The rest were 150ish. Attempted a start today and it sounded like absolute garbage. The belts squealed when you gave it throttle. So I killed it. I figure I'm looking at head gaskets, getting heads checked, impeller and maybe a water pump. Any other thoughts?