Removing Pistons from Rods 383

[moper]

balancing the reciprocating assembly means finding the lightest rod and piston "assembly" and matching the rest. I'm finding it hard to understand why you should have to disassemble the rods and pistons. Most, if not every machine shop, will assemble the rods and pistons to balance them prior to assembly.

Um... No. They are only assembled during engine assembly. The rod ends are weighed separately because the big end is rotating weight and the small end is reciprocating weight. There's a formula to apply those into the bobweight. The heavier ends are lightened to match the lightest ends. Pistons are also weighed and weight matched because they are all reciprocating weight. Then the bobweight (amount) is duplicated and added to the crank throws and the crank is spun and balanced. Then weight is added or removed to get it right. Then the parts get assembled.

IMO - I don't balance flywheels or flexplates or convertors or dampeners with the assembly. It's not needed and complicates changing parts later if the owner desires.

 

[Lionized]

Um... No. They are only assembled during engine assembly. The rod ends are weighed separately because the big end is rotating weight and the small end is reciprocating weight. There's a formula to apply those into the bobweight. The heavier ends are lightened to match the lightest ends. Pistons are also weighed and weight matched because they are all reciprocating weight. Then the bobweight (amount) is duplicated and added to the crank throws and the crank is spun and balanced. Then weight is added or removed to get it right. Then the parts get assembled.

IMO - I don't balance flywheels or flexplates or convertors or dampeners with the assembly. It's not needed and complicates changing parts later if the owner desires.

If you're going to necropost maybe you should read through the entire thread.
I'm not saying this response is wrong but I was corrected...two years ago, and owned it.

Thanks.

 

[moper]

Sorry to bring back up such an emotinal time for you...lol. I routinely skip things, because by the time I reach the end I've forgotten what I wanted to say. I also didn't notice it was an old thread...lol So you can tell how critical I consider reading everything on the internet.