BRM 4-cylinder engine

Series of Formula One racing engines

Reciprocating internal combustion engine

BRM 255
BRM 258
BRM 259

Overview
Manufacturer|  British Racing Motors
Production| 1956–1960
Layout
Configuration| L4
Displacement| 2.5 L (153 cu in)
Cylinder bore| 4.05 in (103 mm)
Piston stroke| 2.95 in (75 mm)
Valvetrain| 8-valve, DOHC, two-valves per cylinder
Combustion
Fuel system| Carburetor
Fuel type| Gasoline
Oil system| Dry sump
Output
Power output| 260–285 hp (194–213 kW)
Torque output| 205 lb⋅ft (278 N⋅m)

The BRM 4-cylinder engines are a series of four-stroke, naturally-aspirated, 2.5 L (150 cu in), inline-four Formula One racing engines, designed, developed and built by British Racing Motors, between 1956 and 1960. They were exclusively used by BRM; and powered the BRM team cars. It was constructed to conform the FIA engine requirements; necessitating a 2.5 L naturally-aspirated engine displacement formula. The power output for these motors were between 260–285 hp (194–213 kW), and 205 lb⋅ft (278 N⋅m).[1][2]

## Applications

[edit]

* BRM P25[3]
* BRM P48[4]

## Formula One Championship results

[edit]

Year  | Entrant  | Chassis  | Engine  | Tyres  | Drivers  | 1  | 2  | 3  | 4  | 5  | 6  | 7  | 8  | 9  | 10  | 11  | Points  | WCC

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1956 | Owen Racing Organisation | BRM P25 | BRM P25 2.5 L4 | D |  | ARG | MON | 500 | BEL | FRA | GBR | GER | ITA |  |  |  | n/a | n/a
Mike Hawthorn |  | DNS  |  |  |  | Ret  |  |  |  |  |
Tony Brooks |  | DNS  |  |  |  | Ret  |  |  |  |  |
Ron Flockhart |  |  |  |  |  | Ret  |  |  |  |  |
1957 | Owen Racing Organisation | BRM P25 | BRM P25 2.5 L4 | D |  | ARG | MON | 500 | FRA | GBR | GER | PES | ITA |  |  |  | n/a*  | n/a*
Ron Flockhart |  | Ret  |  | Ret  |  |  |  |  |  |  |
Roy Salvadori |  | DNQ  |  |  |  |  |  |  |  |  |
Herbert MacKay-Fraser |  |  |  | Ret  |  |  |  |  |  |  |
Jack Fairman |  |  |  |  | Ret  |  |  |  |  |  |
Les Leston |  |  |  |  | Ret  |  |  |  |  |  |
1958 | Owen Racing Organisation | BRM P25 | BRM P25 2.5 L4 | D |  | ARG | MON | NED | 500 | BEL | FRA | GBR | GER | POR | ITA | MOR | 18 | 4th
Harry Schell |  | 5  | 2  |  | 5  | Ret  | 5  | Ret  | 6  | Ret  | Ret
Jean Behra |  | Ret  | 3  |  | Ret  | Ret  | Ret  | Ret  | 4  | Ret  | Ret
Maurice Trintignant |  |  |  |  |  | Ret  |  |  |  |  |
Joakim Bonnier |  |  |  |  |  |  |  |  |  | Ret  | 4
Ron Flockhart |  |  |  |  |  |  |  |  |  |  | Ret
1959 | Owen Racing Organisation | BRM P25 | BRM P25 2.5 L4 | D |  | MON | 500 | NED | FRA | GBR | GER | POR | ITA | USA |  |  | 18 | 3rd
Harry Schell | Ret  |  | Ret  | 7  | 4  | 7  | 5  | 7  |  |  |
Ron Flockhart | Ret  |  |  | 6  | Ret  |  | 7  | 13  |  |  |
Joakim Bonnier | Ret  |  | 1 | Ret  | Ret  | 5  | Ret  | 8  |  |  |
British Racing Partnership | BRM P25 | Stirling Moss |  |  |  | DSQ | 2 |  |  |  |  |  |
Hans Herrmann |  |  |  |  |  | Ret  |  |  |  |  |
1960 | Owen Racing Organisation | BRM P25
BRM P48 | BRM P25 2.5 L4 | D |  | ARG | MON | 500 | NED | BEL | FRA | GBR | POR | ITA | USA |  | 8 | 4th
Graham Hill | Ret  | 7  |  | 3  | Ret  | Ret  | Ret | Ret  |  | Ret
Joakim Bonnier | 7  | 5  |  | Ret  | Ret  | Ret  | Ret  | Ret  |  | 5
Dan Gurney |  | NC  |  | Ret  | Ret  | Ret  | 10  | Ret  |  | Ret

## References

[edit]

1. ^ "Engine BRM • STATS F1". www.statsf1.com.
2. ^ "1960 BRM P48 technical and mechanical specifications - .com". conceptcarz.com.
3. ^ "1955 - 1959 BRM Type 25 Specifications". Ultimatecarpage.com.
4. ^ "1959 - 1960 BRM P48 Specifications". Ultimatecarpage.com.

* v
* t
* e

British Racing Motors

People|

Founder
Raymond Mays

Principals
Alfred Owen
Louis Stanley
Jean Stanley

Designers
Peter Berthon
Aubrey Woods
Tony Rudd
Len Terry
Tony Southgate
Mike Pilbeam

World Champions
Graham Hill

Drivers
List of drivers

Titles|

Drivers' titles
1962

Constructors' titles
1962

Cars|

Formula One cars

P30
P25
P48
P48/57
P57
P61
P261
P67
P83
P115
P126
P133
P138
P139
P153
P160
P180
P201
P207
P230

Sportscars
Rover-BRM
P154
P167
P351
P301

Engines

V16

H16
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