120 August 2019

• Intro: THE EDITOR - The appeal of a powerboat racing two-stroke engine, from our editor’s lagoon-locked perspective 

• Grid: IN THE NEWS - How the hybrid era in Formula One has brought a return of 1000 bhp power units, Porsche unveils a radically revised version of the 911 RSR GTE, a look under the skin of the 2019 Pikes Peak winner, and more… 
• In Conversation: NORIO AOKI - The project manager of Toyota Gazoo Racing’s Yaris WRC engine tells Stewart Mitchell about how competing in this series compares with Formula One 
• Dossier: MERCURY RACING 2.5 EFI F-1 F1H2O V6 - Ian Bamsey reports on what went into homologating this engine for the top tier of powerboat racing. With research by Stewart Mitchell 
• Focus: COMPONENT AND MATERIALS TESTING - Need to know whether a material or component for a race engine is up to the job? Wayne Ward explains the techniques available 
• Report: 24-HOUR PROTOTYPE ENGINES 2019 - Ian Bamsey probes the LM P1 and DPi Prototype engines at the 2019 Daytona and Le Mans 24-hour races. With additional research by Anne Proffit and Stewart Mitchell 
• Race Engine Digest: ECR ENGINES’ CADILLAC DPI - What is ECRE doing to keep Cadillac and its DPi-V.R engine at the front of the Daytona pack? We have some details 
• Focus: LUBRICANTS - When it comes to oils for race engines, writes John Coxon, it’s all about viscosity 
• Report: EUROPEAN AUTOMOTIVE TESTING EXPO 2019 - Stewart Mitchell reports from this annual exhibition with highlights of the new motorsport powertrain testing technologies now available 
• PS: SUZUKI’S CLASSIC TWO-STROKE ERA - Extracts from Brian Long’s book detailing the story of the two-stroke Suzuki bikes of 1955-78