REAR BRAKES

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
80	ATB7075	BRAKE DRUM MGA	2		CHF 97.35
80	ATB7075ALF	ALFIN DRUM MGA F/R	2	alloy, finned	availability request (add quantity to basket, offer follows)

Ill.no.	Partno.	Part	Quantity required	Info	Price
81	ACH5703	BRAKE DRUM TUBE3/4 LARGE	a/r	steel wheels	CHF 20.00
81	ACH5704	BRAKE DRUM TUBE1/2 SMALL	a/r	steel wheels	availability request (add quantity to basket, offer follows)

Ill.no.	Partno.	Part	Quantity required	Info	Price
82	SF604051	SCREW, 1/4" UNF X 5/8", COUNTERSUNK	4	s/wheels 1500cc & 1600cc	CHF 1.20

Ill.no.	Partno.	Part	Quantity required	Info	Price
83	FNZ507	NUT 7/16 UNF HT	8	w/wheels 1500cc & 1600cc	CHF 3.60

Ill.no.	Partno.	Part	Quantity required	Info	Price
84	18G8526K	BRAKE SHOE SET	1		CHF 57.15

Ill.no.	Partno.	Part	Quantity required	Info	Price
89	ATB7209	LOCKTAB WIRE WHEEL BRAKEDRUM	4/8		CHF 4.75

Ill.no.	Partno.	Part	Quantity required	Info	Price
94	17H7499	BRAKE SPRING REAR	2		CHF 9.60

Ill.no.	Partno.	Part	Quantity required	Info	Price
95	7H7936	SPRING BRAKE SHOE	2		CHF 14.90

Ill.no.	Partno.	Part	Quantity required	Info	Price
96	AAA4714	SPRING BRAKE SHOE	4		CHF 4.75

Ill.no.	Partno.	Part	Quantity required	Info	Price
97	51K1380	BOLT	8		CHF 5.40

Ill.no.	Partno.	Part	Quantity required	Info	Price
98	ATB7078	BACK PLATE, BRAKE DRUM, REAR, RH	1		availability request (add quantity to basket, offer follows)
98	ATB7079	BACK PLATE, BRAKE DRUM, REAR, LH	1		availability request (add quantity to basket, offer follows)

Ill.no.	Partno.	Part	Quantity required	Info	Price
105	7H7931K	ADJ KIT SNAIL & MASK	4		CHF 43.80

Ill.no.	Partno.	Part	Quantity required	Info	Price
106	7H7930	MASK ADJUSTER MGA	4		CHF 16.65

Ill.no.	Partno.	Part	Quantity required	Info	Price
107	7H7931	ADJUSTER MICRAM	4		CHF 44.65

Ill.no.	Partno.	Part	Quantity required	Info	Price
110	27H7166	BLEED NIPPLE BRAKE, BSF	2	1500cc To (c)27989 s/wheel, To (c)28540 wire wheel	CHF 6.65
110	3H2428	BLEED NIPPLE, 3/8 UNF	2	1500cc From (c)27990 s/wheel, From (c)28541 wire wheel	CHF 3.60

Ill.no.	Partno.	Part	Quantity required	Info	Price
115	GWC1111	WHEEL CYLINDER, REAR	2	ohne Staubmanschette	CHF 58.95
115			2	ohne Staubmanschette

Ill.no.	Partno.	Part	Quantity required	Info	Price
116	8G8243	SEAL KIT W/CYLINDER	2		CHF 18.80

Ill.no.	Partno.	Part	Quantity required	Info	Price
117	7H7943	GAITER HANDBRAKE	2	not included with cylinder	CHF 15.80

Ill.no.	Partno.	Part	Quantity required	Info	Price
118	7H7939	SPRING W/CYLINDER	2		CHF 15.40

Ill.no.	Partno.	Part	Quantity required	Info	Price
119	7H7940	CUP EXPANDER W/CYL	2		CHF 16.55

Ill.no.	Partno.	Part	Quantity required	Info	Price
120	27H7395	LEVER BRAKE CABLE MINOR	2		availability request (add quantity to basket, offer follows)

Ill.no.	Partno.	Part	Quantity required	Info	Price
121	17H7203	PIN HANDBRAKE PIVOT MINOR	2		availability request (add quantity to basket, offer follows)

Ill.no.	Partno.	Part	Quantity required	Info	Price
122	7H7932	B/SHOE PIVOT TR2 / MGA (NLA)	2		CHF 97.55

Ill.no.	Partno.	Part	Quantity required	Info	Price
123	AJD8105Z	NUT 5/16 BSF	4		CHF 0.95

Ill.no.	Partno.	Part	Quantity required	Info	Price
124	7H7847	BANJO BOLT 3/8 SPRI	2		CHF 19.55

Ill.no.	Partno.	Part	Quantity required	Info	Price
125	3H550	COPPER WASHER 7/16" X 0.7"	2		CHF 1.25

Ill.no.	Partno.	Part	Quantity required	Info	Price
126	059258	BRASS STRAIGHT THRU BANJO-BSF-TR2/3 3/8BSF THREAD	2	1500cc To (c)27989 s/wheel To (c)28540 wire wheel	availability request (add quantity to basket, offer follows)
126	AHH5634X	UNION 2WAY BANJO180%	2	From (c)27990 steel wheel, from (c)28541 wire wheel	CHF 71.70

Ill.no.	Partno.	Part	Quantity required	Info	Price
127	3H550	COPPER WASHER 7/16" X 0.7"	2		CHF 1.25

Ill.no.	Partno.	Part	Quantity required	Info	Price
80	ATB7075	BRAKE DRUM MGA	2		CHF 97.35
80	ATB7075ALF	ALFIN DRUM MGA F/R	2	alloy, finned	availability request (add quantity to basket, offer follows)
81	ACH5703	BRAKE DRUM TUBE3/4 LARGE	a/r	steel wheels	CHF 20.00
81	ACH5704	BRAKE DRUM TUBE1/2 SMALL	a/r	steel wheels	availability request (add quantity to basket, offer follows)
82	SF604051	SCREW, 1/4" UNF X 5/8", COUNTERSUNK	4	s/wheels 1500cc & 1600cc	CHF 1.20
83	FNZ507	NUT 7/16 UNF HT	8	w/wheels 1500cc & 1600cc	CHF 3.60
84	18G8526K	BRAKE SHOE SET	1		CHF 57.15
89	ATB7209	LOCKTAB WIRE WHEEL BRAKEDRUM	4/8		CHF 4.75
94	17H7499	BRAKE SPRING REAR	2		CHF 9.60
95	7H7936	SPRING BRAKE SHOE	2		CHF 14.90
96	AAA4714	SPRING BRAKE SHOE	4		CHF 4.75
97	51K1380	BOLT	8		CHF 5.40
98	ATB7078	BACK PLATE, BRAKE DRUM, REAR, RH	1		availability request (add quantity to basket, offer follows)
98	ATB7079	BACK PLATE, BRAKE DRUM, REAR, LH	1		availability request (add quantity to basket, offer follows)
105	7H7931K	ADJ KIT SNAIL & MASK	4		CHF 43.80
106	7H7930	MASK ADJUSTER MGA	4		CHF 16.65
107	7H7931	ADJUSTER MICRAM	4		CHF 44.65
110	27H7166	BLEED NIPPLE BRAKE, BSF	2	1500cc To (c)27989 s/wheel, To (c)28540 wire wheel	CHF 6.65
110	3H2428	BLEED NIPPLE, 3/8 UNF	2	1500cc From (c)27990 s/wheel, From (c)28541 wire wheel	CHF 3.60
115	GWC1111	WHEEL CYLINDER, REAR	2	ohne Staubmanschette	CHF 58.95
115			2	ohne Staubmanschette
116	8G8243	SEAL KIT W/CYLINDER	2		CHF 18.80
117	7H7943	GAITER HANDBRAKE	2	not included with cylinder	CHF 15.80
118	7H7939	SPRING W/CYLINDER	2		CHF 15.40
119	7H7940	CUP EXPANDER W/CYL	2		CHF 16.55
120	27H7395	LEVER BRAKE CABLE MINOR	2		availability request (add quantity to basket, offer follows)
121	17H7203	PIN HANDBRAKE PIVOT MINOR	2		availability request (add quantity to basket, offer follows)
122	7H7932	B/SHOE PIVOT TR2 / MGA (NLA)	2		CHF 97.55
123	AJD8105Z	NUT 5/16 BSF	4		CHF 0.95
124	7H7847	BANJO BOLT 3/8 SPRI	2		CHF 19.55
125	3H550	COPPER WASHER 7/16" X 0.7"	2		CHF 1.25
126	059258	BRASS STRAIGHT THRU BANJO-BSF-TR2/3 3/8BSF THREAD	2	1500cc To (c)27989 s/wheel To (c)28540 wire wheel	availability request (add quantity to basket, offer follows)
126	AHH5634X	UNION 2WAY BANJO180%	2	From (c)27990 steel wheel, from (c)28541 wire wheel	CHF 71.70
127	3H550	COPPER WASHER 7/16" X 0.7"	2		CHF 1.25