Originally Posted by s-10again!
i got my uncle a great running 350cid 260 hp marine engine to build for a 69 nova he was going to build. he got the rolling car built and then disassembled the engine with intentions on 400 hp. at that point he lost his health and lost a battle with cancer a year and a half later. at that poin the engine was offered back to me by his sons(my cousins) who put a machinist build 454 in the car and painted the car the way their father had dreamed of. the bad part is the engine was going to the machine shop so the marine steel crank was oiled in a bag, and the lifters trashed, and the rods still attached to the pistons dipped in used deisel oil, and camshaft shelved, nothing marked. i would LIKE to reassemble this engine cheaply for a buddy of mine for christmas, that is down on funds and runs a tired old 88 C 1500 that he dreams of restoreing. i want to know how i would find out where these rods and pistons went. i do not want to spend 1800 bucks line honing and boring block, recamming and reconditioning rods and new pistons whene this engine would have had another 200,000 miles hiding under its carb. i wouldnt put this engine back together withought plastigaugeing it with new bearings and new piston rings but that is 300 bucks worth spending. how much life could i expect from the cam if i put 16 new lifters on it? also in speculation, how relieble could this engine be if the rods were to not make it back to their origional cylinder? what is the bottom line here?
Actually what's important about rods is that the cap and shank match. The cylinder they came from is not important as long as the piston and the rod have the correct orientation. All the pistons have a notch or arrow on top this needs to point to the front of the block in all cases. The rods have a chamfer on the bearing end one side is larger than the other, the larger chamfer always faces the cheek side of the rod throw, so on any throw there will be a forward facing large chamfer with a piston notch both faceing forward, there will also be a rod with the large chamfer facing to the rear of the engine with the attached piston's notch facing to the front of the engine.
If they seperated the rod caps from the rod shanks such that you don't know what goes with what you're more than less got a job to do. Now you've got to figure the match of cap for each shank. This will be visual and slow going you're looking for when the bearing indents are aligned on the same side that the cap and shank bearing diameter meets smoothly and the outside thrust surfaces from and rear of the rod also meet smoothly and the bolt holes and bolts align. Not impossible to do just a PIA to do.