My parts engine is almost torn down with only the connecting rods and crank still to be removed. Before I remove them I wanted to check w/ you all first on a few points.
After the engine is torn down it will be tanked and the oil and coolant passages cleaned out. The machinist will also check the cylinder liner bore and ball hone the cylinders if appropriate. All in all the block looks to be in excellent condition, the crosshatching in the cylinders is still very clear, the tappets showed literally no wear and the cam lobes only some.
1/ The pistons can just be tapped out the top of the engine block? How does one remove the carbon ridge? Running a finger nail across the top of the bore I don't really feel any ridge.
2/ The piston connecting rods use 12 point bolts where they connect to the crank. A 9mm is too small while a 10mm was a bit loose. Are these imperial? Tomorrow I'll scout for a 3/8" 12 point socket. Is there an order they need to be removed in? No order is mentioned in the manual.
3/ Regarding removing the crank, the six hub aligner screws are really on there. Removing them is made more difficult by the crank not being locked. On page 36 of the engine rebuild manual, where it covers removing the crank, step 4 says to "Remove 6 socket head cap screws securing hub aligner to crankshaft, remove hub aligner." I was thinking it wise to have the machinist check the crank for wear and balance but should I bother removing this hub aligner? It isn't necessary to remove the crank from the block. One could stick a piece of wood in the crank galley to lock the crank against assuming that won't somehow damage the crank. That's doubtful as the crank looks extremely robust.
The image of the crank was from earlier in theday, it was flat on the ground when I was wrenching on it. :-)
4/ The rebuild manual doesn't mention a specific order that the main bearing bolts need to be released by. Ditto for the big end bolts I mentioned previously.
It's my first tear down and so I've never seen any of this first hand before. Here's a few more images I took while documenting the process. Thank you all for your assistance!