Connecting Rods and Pistons
WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
The connecting rods are forged titanium alloy with press-in-place piston pin bushings. The connecting rods and rod cap are aligned by dowel pins retained in the cap. The cast aluminum pistons incorporate a polymer-coated skirt to reduce friction. The pistons are unique to the LF4 both for compression ratio and combustion efficiency. The piston uses two low tension compression rings and one multi-piece oil control ring.