McLaren M4B

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McLaren M4B
Category Formula One
Constructor Lambretta-Trojan, Bruce McLaren Motor Racing
Designer(s) Robin Herd
Predecessor M2B
Successor M5A
Technical specifications
Chassis Aluminium monocoque
Suspension (front) Single top link with radius arms and lower wishbones, outboard coil spring/shock units and anti-roll bar
Suspension (rear) Twin radius arms, reversed lower wishbones and single top links with outboard coil spring/shock units
Engine BRM 1998cc V8 naturally aspirated Mid-engined, longitudinally mounted
Transmission 5-speed manual gearbox
Fuel Shell
Tyres Goodyear
Competition history
Notable entrants Bruce McLaren Motor Racing
Notable drivers New Zealand Bruce McLaren
Debut 1967 Race of Champions
1967 Monaco Grand Prix
Races Wins Poles F.Laps
2 champ
+ 3 non-champ
0 (Best result 4th, Monaco) 0 0
Constructors' Championships 0 (Best result 10th, 1967)
Drivers' Championships 0

The McLaren M4B was a Formula One racing car constructed by Trojan for Bruce McLaren Motor Racing and raced five times by New Zealander Bruce McLaren at the start of 1967.

The M4B was based on the M4A Formula 2 car as a stopgap between the M2B and the M5A. Additional fuel tanks were added either side of the cockpit to allow the car to run a full Grand Prix distance, and the rear end of the car was cut away to accommodate a 2.0 litre BRM type 56-2 V8, an enlarged and updated version of the engine with which Graham Hill had won the World Championship in 1962.

The car made its debut in the 1967 Race of Champions at Brands Hatch, showing promise with fourth and sixth places in the heats before a missed gear by McLaren in the final race put him out with engine failure. In the Spring Trophy at Oulton Park McLaren managed fifth place in both heats and the race, and came fifth again in the International Trophy at Silverstone.

1967 Grand Prix season

The M4B's Grand Prix debut came at Monaco,[1] where its short wheelbase made it surprisingly competitive. McLaren ran as high as third before a pit stop to replace a flat battery dropped him back to fourth at the finish - the first points scored by a McLaren chassis that season.

At the next event, the Dutch Grand Prix,[2] the M4B was outclassed by a field that was powered by a new Cosworth DFV engine. Bruce McLaren finished 14th in qualifying. On the second lap of the race, McLaren crashed out, running the only M4B. The car was later repaired, but caught fire during a test at Goodwood and was written off.[3]

Formula One World Championship results

(key) (Results in bold indicate pole position; results in italics indicate fastest lap)

Year Entrant Engine(s) Tyres Drivers 1 2 3 4 5 6 7 8 9 10 11 Pts. WCC
1967 Bruce McLaren Motor Racing BRM V8 G RSA MON NED BEL FRA GBR GER CAN ITA USA MEX 3 10th
Bruce McLaren 4 Ret



  1. "Grand Prix results, Monaco GP 1967". Retrieved 13 December 2015.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  2. "Grand Prix results, Dutch GP 1967". Retrieved 13 December 2015.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  3. "1967 McLaren M4B". Retrieved 26 May 2015.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>