McLaren Senna GTR in detail

McLaren Senna GTR in detail

08.03.2019: The McLaren Senna GTR is powered by the most extreme version yet of McLaren’s 4.0-litre twin turbocharged V8 engine. The M840TR unit, with electronically controlled twin-scroll turbochargers, produces 825PS (814bhp) with 800Nm (590lb ft) of torque.

The McLaren Senna GTR is powered by the most extreme version yet of McLaren’s 4.0-litre twin turbocharged V8 engine. The M840TR unit, with electronically controlled twin-scroll turbochargers, produces 825PS (814bhp) with 800Nm (590lb ft) of torque.



The extra 25PS over the engine in the McLaren Senna has been achieved by engine control recalibration and removing the secondary catalyst to reduce back pressure.  Removing the catalyst also heightens the aural experience of driving the McLaren Senna GTR.



The exhaust system of the concept, which exited through side pipes just ahead of the rear wheels, has been replaced with a more conventional rear exit system on the production car, with the pipes now emerging from the rear deck under the rear wing in the same location as the Senna. The change was made for the purest of engineering reasons: the side exit pipes may have looked the part, but the rear exit pipes provided the shortest, quickest route for exhaust gases to exit, saving weight and reducing complexity.



With 825PS and a lightest dry weight of 1,188kg, the 694PS-per tonne power-to-weight ratio of the McLaren Senna GTR comfortably exceeds not only that of ‘regular’ McLaren Senna, but every other McLaren Automotive car for road or track currently in production.



Three powertrain modes are available to the McLaren Senna GTR driver:  Wet, Track and Race. The new Wet setting, which provides greater support from the ESP and ABS electronic systems, is particularly intended for use with wet tyres. The transmission, which includes a Launch Control function, is the same, acclaimed 7-speed plus reverse Seamless Shift Gearbox (SSG) that features in the road-legal McLaren Senna.





Aerodynamics


Optimising aerodynamic efficiency and giving even more extreme track focus than that possessed by the McLaren Senna – a car already designed to excel on the track – called for a holistic approach that subjected all aerodynamic aspects to intense scrutiny. The McLaren Senna GTR Concept showed the direction and the production-ready car now stands ready to deliver the most effective aero performance for track driving of any McLaren Automotive product.



The McLaren Senna GTR generates astonishing levels of downforce, peaking at more than 1,000kg, a significant increase over the 800kg developed by the road-legal McLaren Senna at 250km/h (155mph). Crucially, a completely different downforce ‘curve’ means the McLaren Senna GTR can call on an equivalent amount of downforce to the McLaren Senna at 15% lower vehicle speed, while still benefitting from reduced drag. The aero package of the McLaren Senna GTR delivers positive effects in high-speed corners but also in low-speed curves and under braking, making the car even less pitch- sensitive and enhancing stability in all situations.



The front splitter has been reprofiled and the rear diffuser reduced in size compared to the components on the 2018 GTR Concept, to optimise performance and meet the required track performance standards. Other changes in comparison to the Concept include new dive planes on the front corners and vortex generators either side of the car to ensure a stable airflow underneath; overall, the aero elements of the McLaren Senna GTR work together to deliver balanced downforce front-to-rear over the entire speed range.



The new front splitter features a raised centre section to feed air under the car back to the newly reprofiled diffuser. The efficiency of the diffuser has, in turn, been optimised by the new rear wing – a design featuring LMP1-style endplates that connect wing to body in dramatic fashion and are a highly effective way to guide air around the back of the car.



Compared to the standard McLaren Senna wing fitted to the 2018 GTR Concept, the wing of the McLaren Senna GTR has been reprofiled and relocated, having been pushed backwards so its trailing edge is now outside the car’s footprint. This new, ‘free of road car restrictions’ position allows the wing to be coupled to the diffuser, making best use of the air flowing over the rear of the car.



Like the road-legal McLaren Senna, the McLaren Senna GTR features active aerodynamics in the shape of the active aero blades flanking the Low Temperature Radiator and an articulated rear wing – elements that are not currently permitted in GT3 racing but bring significant aero advantages.  The wing can be ‘stalled’ for maximum speed thanks to an automatic drag reduction system (DRS).




Body and structure




The McLaren Senna GTR takes McLaren’s mastery of carbon-fibre to a new level of accomplishment for a McLaren track car, combining light weight with immense structural rigidity. One of the lightest cars that McLaren Automotive has ever produced, the McLaren Senna GTR tips the scales in lightest dry guise at 1,188kg.



At the core of the McLaren Senna GTR is a McLaren Monocage III-R central structure, a carbon-fibre safety cell with integrated roll cage and uniquely, integrated harness mounting points.  Like the road-going McLaren Senna, there is an aluminium front subframe and aluminium engine frame, with composite crash beams front and rear.



The extreme, racing-inspired nature of the carbon-composite body appears more purposeful than ever, clothing a chassis that is wider still than that of the Senna and lower than the road-legal Senna by 34mm, at 1,195mm in height. Front track has increased – by 77 mm to 1,731mm – and rear track is wider by 68 mm, at 1,686 mm.




The wider fenders, accommodating 19-inch centre-lock wheels, exaggerate the relative narrowness of the cabin and ‘ground’ the car even more securely. Additional aero devices have been added to the door skins to optimise airflow from the revised fenders.




The McLaren Senna GTR is 10kg lighter than even the McLaren Senna, already a paragon of race-bred leanness.  And this is despite the track car’s wider track, extended body and the fitment of essential track equipment including pneumatic air jacks, pit radio, fire extinguishing system and data logger. Many of the creature comforts fitted to the McLaren Senna have been deleted for the McLaren Senna GTR, including touch screens and the audio system. To optimise comfort across the whole range of track conditions, air-conditioning has been retained.



The windscreen and side windows, with sliding ticket opening, are polycarbonate. The soft-close dihedral doors are fitted with a manual release mechanism, and the fuel filler has become a race-style dump-churn type. Exterior visual carbon-fibre aero elements have a gloss finish as standard. Wheel finish can be Gloss Black, Race Silver or Matt Dark Graphite and the colour of the door struts and brake calipers can be specified in Azura blue, red or McLaren Orange at no additional cost.





Chassis and running gear


The fastest, lightest, most aggressive and engaging McLaren yet has been carefully honed for accessibility, so the incredible track driving experience it offers is not exclusive to professional racing drivers. The target that the programme engineers set themselves was simple: to ensure that 95 per cent of the performance of the car could be accessed by 95 per cent of drivers.  This is achieved in the McLaren Senna GTR by combining the balanced aerodynamic downforce of the road-legal car with new suspension derived from McLaren’s GT3 race programme.




The McLaren Senna’s variable ride control




suspension, which enables different ride heights for road and track, is superfluous in the track-only car and to save weight and reduce complexity has been replaced with aluminium double wishbones, springs, uprights and anti-roll bars developed from the suspension of the GT3 cars used for McLaren’s customer racing programme. Four-way adjustable dampers are fitted, as are solid bushes and adjustable camber.



By not having to comply with GT3 regulations, which restrict the race cars to 18-inch wheels, the Senna GTR gets 19-inch rims like the road-legal Senna, but of a centre-lock design. The Ultra-Lightweight forged alloy wheels are also wider than current GT3 regulations allow, being 10J at the front and 13J at the rear. The 19-inch tyres are Pirelli slicks, sized 285/650 front and 325/705 rear.



The larger wheels mean even larger brakes than those fitted to a McLaren 720S GT3 car, for a system that delivers hugely impressive stopping power. Based on the braking system of the McLaren Senna, the Senna GTR is equipped with forged aluminium monobloc six-piston calipers at the front and four-piston at the rear, working on 390mm layered carbon-ceramic discs that feature machined cooling vanes. Like the road-legal McLaren Senna, the Senna GTR also has an air brake function on the rear wing, which in this guise has been designed to deliver 20 per cent greater maximum deceleration on its slick tyres than its road/track counterpart.



The McLaren Senna GTR is equipped with many of the electronic driver aids that provide safety on the road, including anti-lock braking, traction control and dynamic electronic stability control. Additionally, it features pit lane speed control; systems that monitor both tyre pressure and tyre temperature; brake pad wear sensors; brake disc-wipe technology and anti-collision radar.





Inside the McLaren Senna GTR



The McLaren Senna GTR is left-hand drive only, recognising the fact that hand of drive is less relevant in a track car as well as the fact that most buyers are located in LHD markets, An FIA-approved, lightweight carbon-fibre racing seat and six-point FIA harness is fitted, with a passenger seat available as a no-cost option. As befits a track-only car, the pared-back cabin does without airbags, infotainment and other driver aids. There is a satin finish to the carbon-fibre elements of the interior, the sills are covered in black carpet – the only carpet in the car, in fact – and the headlining is Alcantara®.



The folding instrument cluster and steering wheel from the road car have been replaced by race-spec items. The driver screen displays key data in the simplest forms, with a row of gearshift LEDs along the top edge. LEDs up the side of the pod count down the closing distance of cars behind via the standard anti-collision radar system, as used by top-tier endurance race cars. An additional centre display, replacing the road-Senna’s touch-screen, shows the view from the rear-mounted camera.



The race-spec steering wheel is based on the GT3 car’s wheel but with different functionality for the buttons, in line with the cabin’s one-button/one function ethos. The wheel, which is adjustable for both reach and rake, is quick release and features integrated gearchange paddles.



The Senna GTR is equipped with a pit-to-car radio and two on-board cameras: one forward facing and one in the cabin. There are simple on-off buttons for launch control, pit lane speed control and light rain dynamic setting.  As with the road-legal McLaren Senna, the engine start button is mounted in the roof. And when that big red button is pressed, the McLaren Senna GTR snarls into life, ready to deliver Ultimate thrills on the track of your choice. A fortunate 75 buyers will already be starting to think seriously about just where they will be heading...





- Wayne Bruce, photos McLaren

Permanent-URL: http://www.automobilsport.com/mclaren-senna-gtr-detail---187496.html

08.03.2019 / MaP

More News

McLaren Senna GTR: The ultimate racetrack driving experience
08.03.2019
   McLaren Automotive’s most extreme track car yet revealed in final form    Evolution of 2018 McLaren Senna GTR Concept takes acknowledged McLaren Senna dynamism into new realms of performance as the quickest track McLaren more >>
Ferrari F8 Tributo, a celebration of excellence
07.03.2019
The mid-rear-engined two-seater berlinetta that pays homage to the most powerful  V8 in Ferrari historyThe F8 Tributo is the new mid-rear-engined sports car that represents the highest expression of the Prancing Horse's classi more >>
ZENVO Automotive returns with TSR-S - launch photos
07.03.2019
Danish hypercar specialist Zenvo has presented its Zenvo TSR-S hypercar at the Geneva International Motor Show in a new ‘Grotta Azzurra’ blue livery.    •        Zenvo marks sixth consecutive more >>
HISPANO SUIZA CARMEN unveiled today in Geneva
05.03.2019
First photos     A next-generation electric hyperlux grand tourer•    Hypercar-rivalling performance from a carbon fibre monocoque chassis and advanced fully-electric powertrain more >>
Aston Martin DBS Superleggera TAG Heuer Edition
04.03.2019
50 examples of special edition DBS Superleggera produced to celebrate Aston Martin’s partnership with TAG HeuerSpecial edition TAG Heuer Carrera created to provide collectors timepiece to each ownerEach of the 50 cars ins more >>
HISPANO SUIZA CARMEN A next-generation electric hyperlux grand tourer
28.02.2019
•    Hypercar-rivalling performance from a carbon fibre monocoque chassis and advanced fully-electric powertrain•    Brand’s heritage influences elegant and contemporary design, while attention to detail and craftsmanship ensure exceptional luxury •    The Carmen embodies a proud more >>
McLaren 600LT Spider: The sky's the limit for new longtail convertible
17.01.2019
    New 600LT Spider combines acclaimed track-honed dynamic excellence of 600LT Coupé with added exhilaration of open-air driving    Third model under the £1.2bn McLaren Automotive Track25 busine more >>
New Lamborghini Huracán EVO: elevation of technologies for amplified driving pleasure
07.01.2019
•    New design for improved aerodynamics•    First Lamborghini with predictive logic on vehicle dynamics control: fully-integrated Lamborghini Vehicle Dynamics Control System combined with all-wheel drive, all-wheel steering for redefined parameters of responsiveness, agility and easiness to drive•  &n more >>
Brabham Automotive confirms road legal option for BT62
07.01.2019
Brabham Automotive is pleased to confirm a new Road Compliance Conversion option for its limited edition BT62 track car, which will make the vehicle road legal.The Australian high-performance manufacturer built the BT62 to be an unrestricted track car, with performanc more >>
SPEEDTAIL: McLaren creates collection of design inspirations
28.12.2018
... to ensure that each Speedtail is like no other    Every Speedtail owner invited by McLaren to envision their car    Three inspiring collections suggested by McLaren designers for 250m more >>
Bruce McLaren's winning legacy lives on with the "720S Spa 68" three car collection by MSO
27.12.2018
    McLaren Brussels commissions three 720S supercars in MSO Bespoke Anniversary Orange to honour the McLaren’s first Formula 1 Grand Prix victory at Spa    Fifty years since Bruce more >>
McLaren Senna and 600LT debut in Lebanon - A tale of extremes
27.12.2018
    Two ground-breaking supercars from McLaren Automotive arrived in Lebanon    McLaren Senna, the Ultimate road-legal track car, delivered to McLaren Beirut customer    McLaren 600LT - the li more >>
Unique McLaren P1™ GTR by MSO commemorates 1988 Ayrton Senna maiden Championship
20.12.2018
    McLaren Special Operations (MSO) completes unique McLaren P1™ GTR bespoke commission in celebration of 30th anniversary of Ayrton Senna securing his maiden Formula 1 World Championship    Chassis 12 finished in live more >>
Automobili Pininfarina to invest over €20M in "Pura" design cooperation for luxury and performance Electric vehicle range
28.11.2018
Automobili Pininfarina invests in excess of €20m in Pininfarina SpA design services to support plans for a range of beautiful and innovative luxury electric carsAutomobili Pininfarina reveals PF0’s ‘PURA’ design philosophy, which will more >>
SW1 number plates could fetch nearly a quarter of a million pound - Coys London
22.11.2018
With history being made in London SW1 for a Brexit deal, no-deal or referendum, car owners have a unique opportunity to purchase a piece of SW1 history. Two unique number plates SW1and 1SW whi more >>
McLaren Special Operations (MSO) creates a unique 720S with a ‘Stealth’ design theme
20.11.2018
    MSO Defined Sarthe Grey exterior paint - inspired by the 1995 Le Mans-winning McLaren F1 GTR – is contrasted with hand-painted Vermillion Red accents    Bespoke Satin Finish Visual Carbon Fibre ex more >>
Lamborghini Urus ST-X Concept: the first Super SUV for racing
17.11.2018
•    Vision of a racing car conceived for an innovative single-brand championship starting in 2020•    New “arrive and drive” experience in Lamborghini’s motorsport programs •    Dedicated racing components and a 25% weight reduction compared to the production model more >>
Lamborghini SC18: the first ‘one-off’ created by Squadra Corse
17.11.2018
•    A unique car developed by Lamborghini Squadra Corse in conjunction with the customer•    Aerodynamics derived from experience in Lamborghini Super Trofeo and GT3 racing•    Track-oriented use and exclusive racing contents more >>
Glickenhaus “Believe the hype.”
10.11.2018
TopGear 2018A year ago we announced our SCG 004S, and our plans to be able to scale to 250 cars. The last 12 months have been a wild ride.  more >>
First McLaren Speedtail attritube prototype, "Albert" squares up to rigorous real-world testing
09.11.2018
    McLaren’s new ‘Hyper GT’ embarks on year-long test regime underpinning development of new centre-seat, 403km/h (250mph) hybrid    Closed-facility testing more >>
McLaren Senna makes Latin American debut at Sao Paulo International Motor Show
06.11.2018
    McLaren Senna makes public debut on Latin American soil    Ultimate road-legal track car displayed at São Paulo International Motor Show between November 6-18 alongisde MP4/6 Formula 1 car    Senna Brand working with McLaren São Paulo to honour the story of the famous Brazilian racin more >>
McLaren Speedtail: A momentous unity of Art, Technology and Velocity
27.10.2018
    McLaren’s first ‘Hyper-GT’ and the ultimate McLaren road car; harmonises sleek and seamless beauty with pioneering technologies and extreme performance    A car like no other: only 106 will more >>
McLaren Speedtail - A badge of honour
18.10.2018
    The extent of bespoke made possible by McLaren’s Speedtail evidenced in beautiful bonnet badge    Uniquely fashioned in 18 carat white gold with carbon fibre inlays    McLaren’s next Ultimate Series and first ever Hyper-GT to be revealed on October 26, 13:00BST, at cars.mclaren.com more >>
The McLaren Speedtail picks its moment
12.10.2018
    McLaren’s next Ultimate Series and first ever Hyper-GT to be revealed on October 26, 13:00BST, at cars.mclaren.com    Name evocative of a p more >>
Mercedes-Benz is unveiling the Vision EQ Silver Arrow at Pebble Beach
26.08.2018
At Pebble Beach in California, Mercedes-Benz is unveiling the Vision EQ Silver Arrow show car during Monterey Car Week, which is being held from 18 to 26 August 2018. The event attracts car aficionados and collectors from all over the world. The one-seater veh more >>
Audi PB18 e-tron concept car - World premiere at Pebble Beach
25.08.2018
High-performance sports car with electric drive        Design and technical concept car        As a monoposto on the racetrack For the first time, Audi is prese more >>
McLaren Senna 001 takes the ultimate road trip
27.07.2018
    McLaren Senna with chassis number 001 presented to owner David Kyte by McLaren Automotive CEO, Mike Flewitt, in ceremony at the McLaren Technology Centre     Striking Anniversary White paintwo more >>
McLaren Speedtail revealed as name of World's first hyper-GT
25.07.2018
    McLaren’s next Ultimate Series, previously codenamed BP23, to be called the Speedtail    Name evocative of a peak speed higher than any McLaren yet and flowing, highly streamlined design    To feature exquisite new materials encouraging boundless tailoring through McLaren Special Operations (MSO) more >>
Lamborghini Polo Storico celebrates 50th anniversary of the Espada and the Islero
23.07.2018
.... and announces a dedicated tour This year marks the 50th anniversary of Automobili Lamborghini’s Espada and Islero models. To mark this momentous occasion, Lamborghini Polo Storico, the division devoted to the House of the Raging Bull's historic cars, has more >>
Bespoke McLaren Senna with full visual carbon fibre body in emerald green
18.07.2018
.. tint by MSO one of first customer deliveries    First North American designated McLaren Senna delivered to customer Michael Fux in New York    Specified with McLaren Special Operations bespoke content more >>
Lamborghini Polo Storico restores the iconic Miura SVR
21.06.2018
Lamborghini Polo Storico has completed restoration of one of the most famous Miuras ever built: the Miura SVR. On the occasion of its delivery, the car was also exhibited at Japan’s Nakayama Circuit. As is well-documented, only 763 Lamborghini more >>
Rolls-Royce Dawn "inspired by music" takes to the stage
25.05.2018
The social, convivial atmosphere of Dawn has been encapsulated in a light-hearted music video introducing Dawn ‘Inspired by Music’.In a playful twist, Dawn ‘Inspired by Music’ was taken for a spin in Rolls-Royce&rs more >>
McLaren 570GT is back in black with the MSO Black Collection
15.03.2018
...limited to 100 examples worldwide    New 570GT MSO Black Collection features all-black, stealth design    Exterior modifications include MSO Bespoke Carbon Black paint, MSO Defined Black Pack, MSO Nano more >>
EXXONMOBIL to become Aston Martin Valkyrie official technology partner
07.03.2018
ExxonMobil today announced it will become the official fuel and lubricant partner of the Aston Martin Valkyrie. This new partnership allows all 150 Valkyrie production cars to leave the factory filled with ExxonMobil products including more >>
Rolls-Royce Motor Cars announces the "Silver Ghost Collection"
27.02.2018
One motor car changed the course of automotive history. Today, the legend is re-told as Rolls-Royce Motor Cars proudly announces the creation of a collection of 35 model year 2018 Rolls-Royce Ghosts, created in homage to the original Silver Ghost’s achievement. more >>
The new Lotus 3-Eleven 430 technical specification
20.02.2018
3-Eleven 430 – Technical Specification              PERFORMANCEMax power  &nbs more >>
The new Lotus 3-Eleven 430 - final evolution
20.02.2018
•    Substantial power increase to 430hp•    920 kg and 467 hp per tonne•    0-60 mph in 3.1 seconds, top speed of 180 mph•    Lightweight more >>
McLaren Special Operations extends range of MSO Defined options for Sports Series
09.02.2018
....with new Black Pack and Titanium SuperSports Exhaust    New MSO Defined Black Pack for 570S Coupé and 570GT as an alternative to standard Dark Palladium grey finish exterior components& more >>
MSO X: 10 uniques 570C Coupés inspired by McLaren Endurance Racing Heritage
25.01.2018
McLaren Special Operations delivers MSO X    10 MSO X cars inspired by the McLaren 570S GT4, created as bespoke project by McLaren Special Operations    Designed and engineered with race car emulation more >>

2001-2019 automobilsport.com full copyright