Eagle 4.250 Cast Crank Broken

[ERA Chas]

Originally Posted by DAVID GAGNARD

While this may not be a good comparison,FE vs. small block parts, I'll give it a shot anyway........
I built my first race engine, 331 stroker with a 4340 forged Eagle rotating assy....

It's not a good comparison-not because of FE vs Windsor but because yours is forged.
5+ years ago, my experience was that Eagle's cast and forged lines for Windsor, LS, BBC and Mopar were markedly better quality than now. Few came back as warranty claims due to crank failure.
Now all the major builders on here are quick to provide Scat and other brands and shun Eagle. They don't want come-backs either.

[DAVID GAGNARD]

Originally Posted by ERA Chas

It's not a good comparison-not because of FE vs Windsor but because yours is forged.
5+ years ago, my experience was that Eagle's cast and forged lines for Windsor, LS, BBC and Mopar were markedly better quality than now. Few came back as warranty claims due to crank failure.
Now all the major builders on here are quick to provide Scat and other brands and shun Eagle. They don't want come-backs either.

O-K: I haven't really kept up with their parts from years ago as compared to their recent stuff..........

David

[D-CEL]

I think we should also recognize a second major contributing factor. The MFG does not fully understand the key characteristics of the product. That is to say, what makes a “good” crankshaft. I believe US mfgs learned this lesson many years ago.
Unfortunately, when cost is a driving parameter, quality is usually the first casualty. Few in the MFG world see QA / inspection as a “value added process, even after a catastrophic failure.

[glenview289]

Quality Control is not, and never has been considered as value added. It is engineerings function to first design a component for a specific function that meets the requirements of the device. Engineering must then develope a manufacturing process that is capable of producing the required part every time. It is Quality Controls job to audit the process to ensure that it is in control, stable, and continues to produce good parts. FMEAs are done when bad parts or a catastrophic failure occurs to determine the root cause of the problem. The better manufactures do all this work up front at an additional cost which goes into the product. Non OEM manufactures are only making parts and therefore are cheaper because they are not privy to the engineering or IP that went into the part. This manufacturing issue is not specfic to any National boundary. It is the responsibility of the company whose name is on the part to ensure that the design requirements are being met, where ever in the world they are being produced.