SPECIFICATIONS for RM RILEYS
RM data compiled by Larry Rice
Last updated 5 August 1996
1.5 Litre. (RMA) 2.5 Litre. (RMB)
ENGINE
High camshafts and push-rod 90-deg o.h.v engine.
12 hp 4cyl ohv 16 hp 4cyl ohv
compression 6.8:1 compression 6.8:1
69x100mm (1,496cc) 80.5x120mm (2,443cc)
55bhp at 4,500rpm 90bhp at 4,300rpm
(100bhp at 4,500rpm
from Oct. 1948 onward)
1 H2 SU carburettor 2 H4 S.U. carburettors.
TRANSMISSION
Four-speed gearbox. Four-speed gearbox.
Synchro on 2nd,3rd,4th. Synchro on 2nd,3rd,4th.
Overall gear ratios: Overall gear ratios:
1st 19.4 2nd 11.2, 1st 15.0, 2nd 8.86, 3rd 5.83,
3rd 7.22 4th 4.88 3rd 5.83, 4th 4.11
Reverse 19.4 Reverse 15.0
SUSPENSION
Independent front Same.
suspension with twin
wishbones, torsion bars
and hydraulic telescopic
dampers.
STEERING
Rack and Pinion. Same.
BRAKES
Girling Hydro-mechanical. Same.
10inch dia drums. 12inch dia drums.
WEIGHT
24-1/2 cwt. 28 cwt.
DIMENSIONS
Wheelbase 9ft 4-1/2ins. Wheelbase 9ft 11ins.
Length 14ft 10ins. Length 15ft 6ins.
Width 5ft 2-1/2ins. Width 5ft 3-1/2ins.
Height 4ft 9ins. Height 4ft 11-1/2ins.
Turning Circle 30ft. Turning Circle 36ft.
Weight 2,688lb Weight 3,136lb
PRICE
£ 709 18s 4d. £ 1,125 3s 10d.
Back to thetop
Back to theRiley page
2-1/2-Litre (RMC)
As for RMB 2-1/2-Litre except:
DIMENSIONS
Height 4ft 7ins.
Back to thetop
Back to theRiley page
2-1/2-Litre Drophead Coupe (RMD)
As for RMB 2-1/2-Litre Saloon.
Back to thetop
Back to theRiley page
1-1/2-Litre Saloon (RME)
As for RMA 1-1/2-Litre Saloon except:
TRANSMISSION
Overall gear ratios.
1st 20.37, 2nd 11.73, 3rd 7.58, 4th 5.12. Reverse 20.37 to 1.
Back to thetop
Back to theRiley page
2-1/2-Litre Saloon (RMF)
As for RMB 2-1/2-Litre Saloon except:
11in diameter brake drums.
Back to thetop
Back to theRiley page
2-1/2-Litre Saloon Pathfinder (RMH)
ENGINE
110bhp at 4,400rpm
Compression 7.25
GEARBOX
Overall gear ratios.
1st 13.59, 2nd 8.45, 3rd 5.88 4th 4.1 Reverse 18.42
Overdrive available from March 1956.
BRAKES
Servo-assisted hydraulic brakes with 12in drums.
DIMENSIONS
Wheelbase 9ft 5-1/2ins
Length 15ft 3-1/2ins
Width 5ft 7ins
Height 5ft.
Turning Circle 35ft 6ins
Weight 3,416lb
Back to the top
Back to the Riley page