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Google, does Ford own Cummings?
The answer is no, Ford never owned Cummins and it doesn't own it today either. It is a myth and has its own little story of why this rumor started going around. However, the people said that it could be true because Ford Motor Company had bought 10.8% shares of the diesel engine manufacturer back in 1990.
Ford quit installing Navistar back in 2011. Ford is the only manufacturer that has designed and built their own Diesel engine. And the only one that uses compacted graphic iron for the block. CGI is a much better material for a block then cast iron. It’s much harder and much more wear resistant and vibration resistant than cast iron. So why don’t everybody use it? You can’t machine a block with machinery designed to machine cast iron. The cutting tools just wont do the job. And the cast iron blocks are too heavy. You need to design the engine from ground up to utilize GGI. Cummings 3L Diesel and Fords 2.7 gas engines are CGI. Peterbuilt newest Diesel is GGI. GGI has been around decades but only in the last few years could it be machined on a production basis. The cutting tools just were not available. With new carbide grades and more importantly coatings it can now be machined without changing the cutters literally every cylinder.
Google compacted graphite iron to see what it is really like. You will see it’s properties, scanning electron microscope view and much more.
Lynwood
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