Caravan FWD V6-181 3.0L SOHC (1991)
Piston: Description and Operation
Are aluminum alloy with a steel strut, short height, and thin wall so as to be autothermic and light weight. The piston head with valve recesses, in
combination with the cylinder head, forms a compact spherical head with clearance for total valve lift with pistons at top dead center. The piston skirt,
top and second ring lands are finished to a tapered roughness for oil retention and high resistance to scuffing. Piston pins, pressed into place, join the
pistons to the connecting rods.