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www.highpowermedia.com Race Engine Technology 54 Issue 91: December/January 2016 Issue 92: February 2016 THE COMMUNICATIONS HUB OF THE RACING POWERTRAIN WORLD PATMUSI: Drag racingEFIpioneer inconversation DEC/JAN 2016 USA$25,UK £12.50,EUROPE e 18 www.highpowermedia.com CALMING CONNECTIONS Timing drive vibration insight AIR-COOLED EXCESS JP Motorsport’s high-speed VW flat four BEYOND INTERNAL COMBUSTION Alternative race technology focus THE COMMUNICATIONS HUB OF THE RACING POWERTRAIN WORLD DONATUSWICHELHAUS: Rallying’sPowerKing FEBRUARY 2016 UK £12.50,USA$25,EUROPE e 18 www.highpowermedia.com BLOWN INJECTION PIONEER KPE’s innovative Big Block BETWEEN THE EYES Focus on con rods DEFINING CRANK VIBRATION Essential design considerations Dossier: JP Motorsport Drag VW Boxer Lawrence Butcher recounts the development of a diminutive flat-four boxer into a fiercely powerful drag race engine Insight: Valvetrain Vibration Damping A lot can be done to minimise vibration in an engine’s valvetrain to optimise performance, as we explain Race Engine Digest: PLR 520 Pro Mod V8 When the NHRA decided to put a limit on boost in Pro Mod, Team JEGS and Pro-Line Racing decided to switch engines Focus: Alternative Energy Wayne Ward examines recent and future developments in some of the different types of energy storage Insight: Cadillac LF4.R How a tight development schedule and opting for many street-spec components led to this race-winning GT3 engine Report: Professional Motorsport World Expo 2015 This year’s PMWE may have coincided with the start of the city’s carnival season but it was no sideshow, as we report Focus: Water Pumps What are the key parts inside a race engine water pump, and how can their designs be optimised? Matt Grant reports Dossier: KPE EFI Blown Big Block Chevrolet Conventional wisdom went against using electronic fuel injection in a blown alcohol motor, until one man proved everyone wrong. Lawrence Butcher reports Focus: Con Rods Wayne Ward reports on developments in the design and manufacturing of these fundamental powertrain components Race Engine Digest: Roger Clark Motorsport Gobstopper II Stewart Mitchell recounts the development of the Subaru engine in this Pro Extreme British Time Attack contender Report: Top Fuel Horsepower Measurement Seminar After our article on the power a Top Fuel dragster engine really produces, attendees at PRI had the opportunity to learn more. Ian Bamsey reports Focus: Radiators and Coolers Cooling system design and manufacture hides a wealth of application-specific detail, as Dave Cooper explains Insight: Crankshaft Torsional Vibration Part 2 In the second half of his analysis of crankshaft torsional vibration, Matt Grant shows how to calculate the orders and half-orders of the torsional amplitudes