0 This Four-Cylinder Engine Screams To 10,000 RPM November 29, 2025 Boreham Motorworks developed a naturally aspirated 2.1-liter engine delivering 325 hp for its Ford Escort RS restomod https://www.carscoops.com/author/bradcarscoops-com/ by Brad Anderson 12 hours ago Boreham’s 2.1-liter four-cylinder packs a billet