Naturally aspirated, 18,000 RPM limited, mid-mounted. Inboard torsion bar / damper system operated by pushrod and bell crank with a double wishbone arrangement Moulded carbon fibre honeycomb composite incorporating front and side impact structures and integral safety fuel cell Mark Williams (Head of Vehicle Engineering) Conquering all that dare oppose it, it provided a fitting end to the sports first foray into turbocharged machinery.Quick facts: Category, Constructor, Designer(s), Predecess. The MP4/4 is, without doubt, an era-defining machine and one of the most well rounded cars to have ever graced the sport. The design of the gearbox, like Honda's engine, paid particular attention to the oil system, both of which used dry sumps to improve temperature control, reliability, reduce windage and tolerate the huge g-forces exerted on the car.

They decided upon a triple shaft arrangement that would allow them to keep the engine as low as possible and not adversely affect the driveshaft angles, an issue that Lotus, by comparison, tried to overcome by slightly tilting the engine upward while using a two shaft gearbox arrangement. To overcome these issues, Gordon Murray approached long-time Brabham contributor Pete Weismann to collaborate on the design. With such a low crankshaft and small clutch, some lateral thinking was required when it came to McLaren's gearbox design. The Tilton carbon clutch measured just 5.5' in diameter and, whilst everyone else struggled on with 7.25' diameter clutches, the Tilton gave for superior heat management, smoother engagement, low inertia and high torque capacity that helped McLaren to deal with demands of the Honda engine. The Honda engine featured a low crankshaft and was paired with a small clutch that had been developed by Tilton during 1987 for Lotus. Mechanics work on the McLaren MP4-4 Honda of Alain Prost This potent mixture helped to deliver a broad torque band that made the car much easier to drive than the now diminished turbocharged field and still provided an advantage over the 'atmos' cars.

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