We had a Volvo sedan and station wagon in the late 80s when the kids arrived. Both were the four-bangers, one naturally aspirated and one turbocharged. They were amazing engines, but the turbocharger failed with the normal turbo problem of burned out bearings and seizure. Fortunately, it was covered by warranty.
Still like my V8. Most V8s in the 60s were making about 1 hp per cubic inch. Today’s engines typically are producing 2.0 to 2.5 times that amount. Amazing progress in ICE design and efficiency in the 50 years.
The Ford Triton V8 suffers from aluminum heads that often seize up spark plugs due to dissimilar metal galling. It is a very costly failure when that happens. Engine blocks and heads should be made of cast iron!
“Engine blocks and heads should be made of cast iron!”
Preach it, Brother!
. . . and pistons of titanium. The stresses in an engine would be negligible if you had massless pistons and con rods.