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TOPIC: Interesting Discovery

Interesting Discovery 3 years 4 months ago #4976

  • Bolens16
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Had a rebuild to do on a 16HP V twin Vanguard Briggs engine last week.
It had been run low on oil and destroyed a con rod. I pulled the sump and the flywheel off and found I could push the pistons up to the top of the bore and by turning the crank to the right spot I could slip it out past the rods.
Then I found I could pull the pistons to the bottom of each bore, being careful not to pop the oil rings out of the bottom of the bore, remove the gudgeon circlips, pull the gudgeon pins and remove the rods.
The crank has a hardened journal so I managed to scrape the excess alloy off and polish it with one of those green fibrous pot scrubber things.
So all I had to do was throw in some second hand rods and put it all back together.
The cost of parts excluding the rods (which I swapped for a 700 gearbox) was under $100.
The parts were top and bottom seal, sump gasket and "O" ring.
Doing this saved taking the heads off and disturbing the rings so saved a fair bit of dough.
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