Topic: Rod weight, one rod 2 grams lighter than the rest.

[KayOne]

Starting on the engine build on the K1. Removed the rods to check the bearings and weighed them. Three rods 281 grams, one 279 grams. Should I lighten up three rods to match the lightest or just leave them alone?

[Don R]

You took the time to measure, I'd lighten 3.
  I didn't do that to an engine 30 years ago, it still bugs me that I didn't take the time, although it runs strong as ever.

[Dream750]

Starting on the engine build on the K1. Removed the rods to check the bearings and weighed them. Three rods 281 grams, one 279 grams. Should I lighten up three rods to match the lightest or just leave them alone?

Looks like you are within weight specifications according to this Honda service bulletin:

http://manuals.sohc4.net/CB750SB/750_31.pdf

[KayOne]

Very interesting reading Dream! I don't think I will worry about it after seeing this article. It's not like I don't have enough work to do already.