Quaife sequential porsche1/11/2024 These sequential gearboxes are fully compatible with flat-shift ignition cut systems to allow full throttle gear changes, so unlike an H-pattern dog box, where lifting off the throttle is required, gear changes can be made with no noticeable interruption to power delivery. Shifting with a dog box is different to a synchro box in that gear changes need to be fast and positive rather than slow and smooth.įor those looking for the ultimate in fast gear changes, our range of sequential gearboxes is the logical progression from H-pattern gearboxes, offering ultra-fast gear changes through use of Quaife’s proven drum change technology. The ability to shift gear without using the clutch reduces the time spent off the power and allows drivers to get back on the power sooner, resulting in faster overall race times. Many of these dog boxes still use the same ratios as the synchromesh boxes. Sunday 29th April 2018 Normally you would use the clutch on a downshift if you dont have a paddle shift with the electronics and blippers to sort out rpm and timings. These are the next progression from a synchromesh gearbox, and are for those looking to decrease the time spent shifting gear by removing the necessity of operating the clutch for each gear change. LSDs for the early 901 were quite rare, with most racers having to adapt the 904 'smooth plate' LSD with Nadella flanges. although your 914 uses the Late 901 type, Sandy. Quaife invites you to discover more below, or for personalised product selection advice, please contact our Customer Services Team.Quaife’s range of Clubman and heavy duty H-pattern synchromesh gearboxes retain the standard synchromesh engagement parts from the original gearboxes, and offer optimised gear ratios for motorsport to make the most of the power and torque from the engine in any given gear. GT Chromoly LSDs (and TBDs) are available for ALL 901's, including the early '64-'69 model 911s. The rapid, state-of-the-art, mechanical gearshift eliminates the possibility of a ‘missed’ gear, and the units are compatible with the majority of ‘off-the-shelf’ paddleshift / semi-automatic systems to deliver substantial performance benefits for any vehicle application. The Quaife QBE89G is a seven-speed sequential gearbox with ultra-close ratios, ideally suited to the demands of front engined, rear wheel drive cars running small capacity engines with a narrow powerband specifically for Caterham 7, Westfield and similar. Quadrant, 144 Quadra-Trac, 226f Quaife automatic torque biasing (ATB). The Quaife sequential gearboxes offer the ultimate in performance drivetrain technology. See Porsche Dual Klutch (PDK) transmission Porsche Dual Klutch (PDK) transmission. Customers have the option of either helical format or straight-cut (spur) gears, with either synchromesh or dog engagement depending on requirements. In-line, front wheel drive, four-wheel drive and transaxle variants are available many with a choice of motorsport or fast road suited ratios. They install easily via a range of bellhousings for popular engines (where required). Synchromesh and dog engagement versions are available, as is a choice of final drive ratios, with fitments covering Alfa Romeo to Volvo.ĭesigned to transmit higher torque loadings than road going transmissions, Quaife motorsport gearboxes incorporate technical advantages including close ratio gears and lightweight, high-strength casings. Quaife gearkits feature high strength motorsport optimised close ratio gears, with outstanding durability and performance for motorsport, fast road and trackday use. With outstanding reliability and performance, Quaife ATB® differentials are actively used in rally, racing, track day and fast road fitments. The Quaife range of products includes the Quaife ATB® differential, which is designed to improve the traction of any front, rear or four-wheel drive car.
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