Quad-4 down (Page 2/2) Quadfather SEP 25, 09:14 AM quote Originally posted by sanderson231: Some parts are getting harder to find but hard to call an engine that makes 180-190 hp from 2.3L N/A obsolete. Plus there's the fun factor. When a Quad 4 hits 4000 rpm it feels like a turbo kicking in. Amen. People who know Quad 4s know how awesome they are.