This Wiseco piston kit is designed for Ford 2.0 8V Pinto, Capri RS2000, and Sierra OHC engines. The kit includes a forged piston with a diameter of 91.5mm and a compression ratio of 9.2:1. The piston is made of durable materials that ensure long-lasting performance and improved engine efficiency. It is perfect for car enthusiasts who are looking for a reliable upgrade to their engine’s performance. With this Wiseco piston kit, you can expect improved acceleration, increased power, and enhanced fuel efficiency. Compression Ratio – Actual.