{"id":149694,"date":"2026-06-11T06:00:47","date_gmt":"2026-06-11T11:00:47","guid":{"rendered":"https:\/\/engineswapdepot.com\/?p=149694"},"modified":"2026-06-11T00:17:14","modified_gmt":"2026-06-11T05:17:14","slug":"boreham-motorworks-ford-escort-rs-with-a-10000-rpm-inline-four","status":"publish","type":"post","link":"https:\/\/engineswapdepot.com\/?p=149694","title":{"rendered":"Boreham Motorworks’ Ford Escort RS with a 10,000 RPM Inline-Four"},"content":{"rendered":"

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Boreham Motorworks<\/a> is building 150 special Ford Escort Mk1 RS<\/a> cars costing \u00a3295,000 or $400,000. The heart of the project is Boreham’s custom “TEN-K” 2.1 L motor producing 330 hp at 10,000 rpm. The naturally aspirated inline-four features a 16-valve head, forged rods, and billet crankshaft, cradle, and dry sump. Boreham backs the motor with a twin-plate clutch and custom five-speed manual transmission featuring a dog-leg first gear. A custom two-piece driveshaft sends power to a floating rear axle with a torque-biasing limited-slip differential and 5.125 ratio. The car rides on a tubular steel subframe with MacPherson strut front suspension and custom R53 Suspension shocks and springs. In back is a six-link suspension using 4 radius arms and 2 Watt’s links. Braking is handled by four-piston calipers with 300 mm vented rotors in front and two-piston calipers with 260 solid rotors in back. A set of custom wheels (15×7, 15×8) wear Yokohama A052 tires (205\/50, 225\/50).<\/p>\n

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