Technical Data
for the MG Y Series - YT only

We often get asked questions on technical matters relating to basic specification data on the MG Y Type, so it seems sensible to make available a printed sheet with all the usual data on it.

Source: Maintenance Manual and Instruction Book for the MG One and a Quarter Litre (Series 'Y') - available as a reprint in full from the MG Octagon Car Club - see Links page. While every effort has been made to carefully copy and reproduce the data shown accurately, your attention is drawn to our DISCLAIMER.

NB This data is correct for the MG YA and YT - not the MG YB! Download this sheet as a PDF file here.

NB. The conversion from Imperial cwt to kg for the weight is incorrectly stated in the original Workshop Manual as 933.5kg. It is corrected in a later Supplement to the Owners Manual as 958 kg.

NB This data is correct for the MG YT - not the MG YA or YB! Download this sheet as a PDF file here.

MG YT only

GENERAL DIMENSIONS:
Overall length	13 ft. 8 in. (4.165 m.).
Overall width	4 ft. 11 in. (1.524 m.).
Overall height	4 ft. 10½ in. (1.523 m.).

WEIGHTS:
Complete car	18 cwt. 3 qr. (933.5 kg.).
Front	9 cwt. 2 qr. (483 kg.).
Rear	9 cwt. 1 qr. (463 kg.).
Chassis Bumpers fitted, less wings and lamps.	11 cwt. (559 kg.).

PERFORMANCE:
Brake horse-power	54.4 b.h.p. at 5,200 r.p.m.
Maximum torque	765 lb. in. (8.9 kg.). at 2,600 r.p.m.
Litres per ton-mile	2732.

REAR SPRINGS:
Type	Half elliptical, interleaved with rubber.

ytrearsus

No OF LEAVES	8
LEAF SIZE	¼" x 1½"	IN
LOAD RATE	248	LB/IN
FREE CAMBER	294	IN
FLAT LOAD	729	LB
MAXIMUM DEFLECTION	6¼"	6¼"

CARBURETTER NEEDLES:
Standard	ES.
Richer	EM.
Weaker	AP.

CAMSHAFT:
Cam lift	5.785 mm. = 8 mm. at valve.

VALVE SPRING PRESSURE:
Valve lift	8 mm.

INSTRUMENTS:
Revolution counter and clock	British Jaeger. Type K.30.
Reduction gear on dynamo	100/225 for rev. counter
Speedometer	British Jaeger. Type S.516.
Starter switch	Lucas Model ST.19. Type L.
Distributor	Lucas Model DKY.4A. Type DA.37.
Dynamo	Lucas Model C.45Y–V.3. Type GC.24.
Control Unit	Lucas Model RF.95/2. Type L.
Windscreen wiper	Lucas Model CW.1DA.34.
Headlamps	Lucas Model S.700.
Stop and tail-lamp	Lucas Model ST.51/1
Reverse and tail-lamp	Lucas Model RT.51/1.
Stop and tail-lamp (U.S.A. cars only)	Lucas Model 482D
Reverse and tail-lamp (U.S.A. cars only)	Lucas Model RT.50C/1.
Sidelamps use twin filament bulbs on U.S.A. cars only	Lucas Model 189

On U.S.A. cars twin Mellotone horns are fitted, and the extra fusebox, Lucas Model SF.5/2, uses a 50 amp. fuse.

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Technical Data

Technical Datafor the MG Y Series - YT only

Technical Data
for the MG Y Series - YT only