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#1
02-28-2019, 07:36 PM
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Seized Vanguard 16HP Now Spins Free?
Long story so please bare with me.
My father gave me his Cub 1641 with a "seized" 16HP Vanguard. He got it stuck in the mud and apparently it seized hard. He mows a big hill so I'm a little worried the engine was starved of oil. After I got it home I tried to turn the engine over with a socket wrench and it turns fine. I can see both pistons move up and down too. I stuck a borescope in both sparkplug holes and the pistons looked intact. The cylinder walls didn't look scored either. Stuck the borescope down in the dipstick tube to see the crank and I don't see anything obviously wrong. My thoughts are cottonwood clogged the mesh intake on the side panels causing the aluminum pistons to get hot enough to seize in the iron bore sleeve. When the engine cooled off it "un-seized." The 1641 has 576 hours on it and he's taken pretty good care of it as far as I know. I plan on dumping out the oil to see how shiny it is. No compression test yet as I'm scared to turn it over real fast if a rod/crank is bent. What's everyone think? Am I looking a new engine, teardown, or make sure everythings ok and run it? Also, I can redo the borescope colonoscopy if you guys would like to see.. Any help would be much appreciated, Steve 
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| 1641, 16hp, briggs, seized, vangaurd |
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