Rod cap mix-up
Maybe this will help. Look at the pic and notice that the bearing "notches" are installed on the same side of the rod. The notches allow the bearings to interlock to prevent spinning on the crank. Remember this - if the engine turned freely BEFORE disassembly - then you probably did something wrong on re-assembly. Check the rod cap alignment and also the piston alignment in the cylinder. The "arrow" on top of the piston has to point to the front of the engine.
Turn the engine over after installing EACH piston/rod assembly. If it gets tight or locks up - STOP and inspect. Do not proceed until you get it turning freely again. NEVER use a breaker bar or cheater pipe to help turn a tight engine. This will really get you in trouble. I hope this helps you with your problem. Good luck, David
Maybe this will help. Look at the pic and notice that the bearing "notches" are installed on the same side of the rod. The notches allow the bearings to interlock to prevent spinning on the crank. Remember this - if the engine turned freely BEFORE disassembly - then you probably did something wrong on re-assembly. Check the rod cap alignment and also the piston alignment in the cylinder. The "arrow" on top of the piston has to point to the front of the engine.
Turn the engine over after installing EACH piston/rod assembly. If it gets tight or locks up - STOP and inspect. Do not proceed until you get it turning freely again. NEVER use a breaker bar or cheater pipe to help turn a tight engine. This will really get you in trouble. I hope this helps you with your problem. Good luck, David