[frnkeore]

I'm a aircraft machinist, that had my own machine shop (still have it but, I'm retired now), up until the time I retired, in 2007, I new the Mil Specs for that time period.

You do not, weld any thing that goes on a aircraft, unless it's had FAA approvals, heat treat and a lengthy inspection that includes X-ray, that went with it. Extremely costly! And you sure didn't use dissimilar metals in the weld, as I would assume you would have to do with a cast iron crank (high nickle). You can weld cast by heating the whole crank, block or head to it's critical temp, weld it with cast rod and anneal it after, also expensive, if you can find someone that will do it.

Then after you do all that, you will have to have it ground. The cheapest I found that was $250.

I'm NO fan of China, for sure but, I would buy a Eagle crank first, for over a 4 1/8 stroke.