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Engine Rebuild

From 1981 Ford Bronco “Spartan”, documented by AbandonedBronco.

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1981 Ford Bronco - The original 300 I6 engine has been taken out and I'm about ready pull it apart to take to the machine shop. 1981 Ford Bronco - The pistons were very hard to remove. Each cylinder had a really large lip at the top that blocked the rings. 1981 Ford Bronco - Most of the bearings in the engine were golden. None had worn through, fortunately. 1981 Ford Bronco - Crank bearings removed and time to remove the crank. 1981 Ford Bronco - Quite the heavy crank! 1981 Ford Bronco - Can easily see the gold color of all the bearings on the pistons and the cam. 1981 Ford Bronco - Engine block assembly showing pistons and connecting rods during a rebuild process. 1981 Ford Bronco - The internal components of an engine block are visible while it's supported by an engine stand. 1981 Ford Bronco - Close-up view of engine crankshaft bearings and connecting rods, indicating internal engine components. 1981 Ford Bronco - The long and tedious task of removing the pistons. I thought they'd pull right out the bottom, but they don't. I had to pull them down into… 1981 Ford Bronco - All the pistons removed. They look to be in decent shape. No cracks or broken skirts. 1981 Ford Bronco - Pistons and crank removed. Ready for the shop. 1981 Ford Bronco - Engine block suspended by chains and resting on an engine stand, ready for rebuild. 1981 Ford Bronco - Well! Here we go again. Turns out the last engine had already been rebuilt once and was so worn out that they couldn't true it up by boring… 1981 Ford Bronco - There pistons are the originals (no oversize stamp on them). Also, there's no ridge at all at the top of any of the cylinders, so it doesn'… 1981 Ford Bronco - The pistons were in great shape. A little dirty, but chips or nicks. I haven't removed them yet, so I haven't seen the underside, but from… 1981 Ford Bronco - The bright spot in the lower left is just where some of the carbon buildup flaked off. This is what all the cylinders look like. Very smoot… 1981 Ford Bronco - I kept having oil leaking out of the #3 and #4 spark plug hole. This confirms that those cylinders were having issues. 1981 Ford Bronco - Lots of buildup on the spark plugs. This isn't the original head to the engine, so it's relatively new. Going to just take it down and have…