http://media.gm.com/gmc/lb7ben.html

"FRACTURED CONNECTING RODS"

"Each connecting rod is hot-forged as one piece, then broken across the crank bearing journal prior to assembly with a sharp, fracturing blow. This metallurgical technique gives each rod and cap its own unique, uneven mating surface. When bolted together, the two pieces mate precisely. The fractured surface keeps the rod and cap from sliding in any direction, greatly reducing the potential for adverse bearing wear."

I found the above excerpt about GM's new diesel engines while searching on "fractured connecting rods."

You learn the neatest stuff on the Internet.

BCingU, Jim


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'96 E300D 60k mi (wife's daily ride)
'95 Audi 90 120k mi
'92 GMC Suburban 139k mi
'85 300SD 234k mi (my daily ride)