ENGINE CONTROLS

CAR IDENTIFICATION MG A

Year	Model	Numbers manufactured
September 1955 to May 1959	MGA 1500cc	10101 to 68,850
September 1958 to June 1960	MGA Twin Cam	501 to 2611
May 1959 to April 1961	MGA 1600cc	68,851 to 100,351
April 1961 to June 1962	MGA 1600cc MkII	100,352 to 109,070

BMC 'B' Series Engine Use(1953 to 1981)

Model	cc	Prefix	BHP/RPM	Torque
M.G. MGA	1489	BP15GB,15GB	68/5200	82
M.G. MGA	1489	15GD	72/5500	85
M.G. MGA 1600	1588	16GA	80/5600	87
MGA Twin Cam	1588	BC16GB	108/6700
M.G. MGA 1600 Mk2	1622	16GC	90/5500 97

MGA Serial Numbers

Engine Number

The engine number is stamped on a plate secured to the righthand side of the cylinder block...or it is stamped on a plate secured to the rear of the engine behind the cylinder block. (Twin Cam)

Car Number

The car number is stamped on a plate secured to the top lefthand side of the dash panel

Gearbox Number

The gearbox number is stamped on the top of the gearbox casing adjacent to the dipstick

Body Number

The body number is stamped on a plate secured to the bulkhead between the righthand bonnet hinge and the fuse block.

Rear Axle Number

The rear axle No is stamped on the front of the axle tube on the LH side next to the spring seat.

Identifying the MGA

There are only five variations of the MGA. The 1500cc, 1600cc, MkII, Twin Cam and 1600cc MkII De luxe. The Coupés were a variation of the Roadster and were not differentiated by the factory numbering system as to body style. The Twin Cam, a major undertaking at the time of its introduction, was identified separately while the De luxe, the most elusive of MGA models, was not distinctly identified. There are reliable production figures for all models except the De luxe.

The three major MGA models may be readily identified by their tail-lamp and grille configurations as well as their engine displacement.

A 1500cc will have the familiar single Lucas tail lamp, the flush style grille and no shroud or boot lid emblems. Four-wheel drum brakes were fitted to this model only.

Very early 1500ccs had different style gauge faces, an example of which can be found in the factory service manual and drivers handbook illustrations. The door rails on the first few cars were entirely of wood as were the cockpit rear corners. There are few of these seen today. The 1500's did not have the starter hump on the passenger toe board or the windscreen mounted hood clamp. The turn indicators were switched through a relay.

1600cc is differentiated by the dual rear lamp with separate turn lamps, larger round parking lamps with flat lenses and a '1600cc' marker on the cowl and rear boot lid. Disc brakes on the front greatly improved stopping power. The starter position was moved with the resulting hump on the passenger toe board.

The 1600cc MkII received the closest thing to a face lift an MGA ever got. The famous flat grille was replaced with the 'pre-crushed' version. The MkI Mini rear lamps appeared horizontally below the boot lid and the vinyl covered dash and cowl and 1600cc MkII badges were added. The chrome trim and dash escutcheon from the Coupé finished off the dash. Seat belt anchors were added to the chassis. 1600cc MkII De luxe cars used the Twin Cam chassis with the push rod 1622cc engine. Check all parts carefully, as MGA's have not always enjoyed the respect they do now, and parts have been freely exchanged with little regard for originality. When re-wiring your car, be sure to order the loom that fits your body type, not engine type.

Ill.no.	Partno.	Part	Quantity required	Info	Price
35	AHH5300	PEDAL ACEL RHD MGA	1	RHD models	CHF 91.25

Ill.no.	Partno.	Part	Quantity required	Info	Price
36	AHH5301	BUSH PB ACCELERATOR PEDAL	1	RHD models	CHF 6.15

Ill.no.	Partno.	Part	Quantity required	Info	Price
37	AHH5306	FULCRUM PIN	1	RHD models	availability request

Ill.no.	Partno.	Part	Quantity required	Info	Price
38	GHF201	NUT 5/16 UNF	1	RHD models	CHF 0.75

Ill.no.	Partno.	Part	Quantity required	Info	Price
39	GHF332	WASHER SPRING 5/16	1	RHD models	CHF 1.10

Ill.no.	Partno.	Part	Quantity required	Info	Price
40	AHH5302	BRACKET-ACEL.RHD MGA	1	RHD models	CHF 73.95

Ill.no.	Partno.	Part	Quantity required	Info	Price
41	GHF300	WASHER 1/4 X 1/2 OD	4	RHD models	CHF 0.45

Ill.no.	Partno.	Part	Quantity required	Info	Price
42	GHF331	WASHER SPRING 1/4	4	RHD models	CHF 0.55

Ill.no.	Partno.	Part	Quantity required	Info	Price
45	AHH5311	PEDAL ASSEMBLY, THROTTLE + CROSS SHAFT	1	LHD models	availability request

Ill.no.	Partno.	Part	Quantity required	Info	Price
46	AHH5314	COLLAR	1	LHD models	availability request

Ill.no.	Partno.	Part	Quantity required	Info	Price
47	AHH5320	BRACKET	1	LHD models	availability request

Ill.no.	Partno.	Part	Quantity required	Info	Price
48	SH604051	SCREW 1/4" UNF X 5/8"	5	LHD models	CHF 0.95

Ill.no.	Partno.	Part	Quantity required	Info	Price
49	GHF300	WASHER 1/4 X 1/2 OD	5	LHD models	CHF 0.45

Ill.no.	Partno.	Part	Quantity required	Info	Price
50	GHF331	WASHER SPRING 1/4	5	LHD models	CHF 0.55

Ill.no.	Partno.	Part	Quantity required	Info	Price
51	AHH5321	BRACKET	1	LHD models	availability request

Ill.no.	Partno.	Part	Quantity required	Info	Price
52	GPR105A	PEDAL RUBBER-ACCELR	1		CHF 12.00

Ill.no.	Partno.	Part	Quantity required	Info	Price
53	AHH5333	CABLE CHOKE MGA RHD	1		CHF 40.90
53	AHH5336	CABLE CHOKE MGA LHD	1		CHF 40.90

Ill.no.	Partno.	Part	Quantity required	Info	Price
54	AHH5625	CABLE ACCELERATOR MGA	1		CHF 17.15

Ill.no.	Partno.	Part	Quantity required	Info	Price
55	AHH5339	BRACKET - SPRING	1		CHF 31.50

Ill.no.	Partno.	Part	Quantity required	Info	Price
56	AHH5310	TOP ANCHOR BRACKET MGA	1		CHF 61.95

Ill.no.	Partno.	Part	Quantity required	Info	Price
57	ACA5289	CABLE TRUNNION MGA	1		CHF 15.70

Ill.no.	Partno.	Part	Quantity required	Info	Price
58	AHH5624	SPRING PEDAL MGA	1		CHF 13.75

Ill.no.	Partno.	Part	Quantity required	Info	Price
59	AHH5308	PEDESTAL ACCELERATOR CABLE	1		CHF 9.20
59	ACA5073	SEAL PEDESTAL	1		CHF 4.15

Ill.no.	Partno.	Part	Quantity required	Info	Price
60	PMZ308	SCREW, 3/16" UNF X 1/2", PAN HEAD	2		CHF 0.90

Ill.no.	Partno.	Part	Quantity required	Info	Price
61	ACH5112	TRUNNION MGA	1		availability request

Ill.no.	Partno.	Part	Quantity required	Info	Price
62	ACC5062	LEVER PIN	2		CHF 8.30

Ill.no.	Partno.	Part	Quantity required	Info	Price
63	12A4	TAG, RETURN SPRING ON LEVER	1		CHF 4.75

Ill.no.	Partno.	Part	Quantity required	Info	Price
64	AHH5621	SPRING RETURN MGA	1		CHF 17.10

Ill.no.	Partno.	Part	Quantity required	Info	Price
65	AHH5303	DISTANCE TUBE	2		CHF 10.80

Ill.no.	Partno.	Part	Quantity required	Info	Price
66	AHH5304	PEDAL STOP	1		CHF 7.20

Ill.no.	Partno.	Part	Quantity required	Info	Price
67	SE604121	SCREW, 1/4" UNF X 1.1/2", PAN HEAD	1		CHF 3.00

Ill.no.	Partno.	Part	Quantity required	Info	Price
35	AHH5300	PEDAL ACEL RHD MGA	1	RHD models	CHF 91.25
36	AHH5301	BUSH PB ACCELERATOR PEDAL	1	RHD models	CHF 6.15
37	AHH5306	FULCRUM PIN	1	RHD models	availability request
38	GHF201	NUT 5/16 UNF	1	RHD models	CHF 0.75
39	GHF332	WASHER SPRING 5/16	1	RHD models	CHF 1.10
40	AHH5302	BRACKET-ACEL.RHD MGA	1	RHD models	CHF 73.95
41	GHF300	WASHER 1/4 X 1/2 OD	4	RHD models	CHF 0.45
42	GHF331	WASHER SPRING 1/4	4	RHD models	CHF 0.55
45	AHH5311	PEDAL ASSEMBLY, THROTTLE + CROSS SHAFT	1	LHD models	availability request
46	AHH5314	COLLAR	1	LHD models	availability request
47	AHH5320	BRACKET	1	LHD models	availability request
48	SH604051	SCREW 1/4" UNF X 5/8"	5	LHD models	CHF 0.95
49	GHF300	WASHER 1/4 X 1/2 OD	5	LHD models	CHF 0.45
50	GHF331	WASHER SPRING 1/4	5	LHD models	CHF 0.55
51	AHH5321	BRACKET	1	LHD models	availability request
52	GPR105A	PEDAL RUBBER-ACCELR	1		CHF 12.00
53	AHH5333	CABLE CHOKE MGA RHD	1		CHF 40.90
53	AHH5336	CABLE CHOKE MGA LHD	1		CHF 40.90
54	AHH5625	CABLE ACCELERATOR MGA	1		CHF 17.15
55	AHH5339	BRACKET - SPRING	1		CHF 31.50
56	AHH5310	TOP ANCHOR BRACKET MGA	1		CHF 61.95
57	ACA5289	CABLE TRUNNION MGA	1		CHF 15.70
58	AHH5624	SPRING PEDAL MGA	1		CHF 13.75
59	AHH5308	PEDESTAL ACCELERATOR CABLE	1		CHF 9.20
59	ACA5073	SEAL PEDESTAL	1		CHF 4.15
60	PMZ308	SCREW, 3/16" UNF X 1/2", PAN HEAD	2		CHF 0.90
61	ACH5112	TRUNNION MGA	1		availability request
62	ACC5062	LEVER PIN	2		CHF 8.30
63	12A4	TAG, RETURN SPRING ON LEVER	1		CHF 4.75
64	AHH5621	SPRING RETURN MGA	1		CHF 17.10
65	AHH5303	DISTANCE TUBE	2		CHF 10.80
66	AHH5304	PEDAL STOP	1		CHF 7.20
67	SE604121	SCREW, 1/4" UNF X 1.1/2", PAN HEAD	1		CHF 3.00