So while I was at the machine shop to talk about rebuilding my broken 7.3L, I mentioned needing to turn the bosses in the pistons down. He said, I can do that for $100, so I jumped on it. I picked them up yesterday and started installing rings, pistons and rods.
As my luck has been lately, I ran into another snag when the rods for #'s 3, 4 and 5 interfered with the camshaft. I checked the others and they clear by at least 12 thousandths. What I'm going to do about that is turn the camshaft down just a touch in the areas where the rods swing by. Rough (forged) measurement of the cam diameter is 1.2" so I'm thinking I can safely trim off 0.15". That's probably less impact on the balance of the rotating assemblies than grinding the spots off the rod caps. I'll run it out to the machine shop and see what he says. If it's another $100, I'll have him do that.

Last edited by klhansen; 07/01/2025 5:00 PM. Reason: rods - not rod caps

Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.