On this site:
Torque Values
Translate between part numbers and description for many MGB fasteners
Links:
'Fastener Decoder Booklet' A reproduction of the document produced by BMC in 1964, kindly sent to me by Marc.
Hex Bolt Head Markings from Unified Engineering Inc.
MGB Bolt Sizes/Taps and Dies by Les Bengtson
MGB 18V Engine Bolt Sizes by Les Bengtson
Whitworth sizes and numbers from Samstag Sales.
British Tools and Fasteners, which says it all really (the original link was to The British Tool Company which has been out of business a couple of years.
Rask Cycle on bolt head markings and torque figures.
Uni-Thread, for taps, dies, reamers and much more.
Tracy Tools ditto (funnily enough also in Devon).
Abbey Power Tools, which has Whitworth and BA spanners as well as much else.
Precision Screw and Bolt, conversion charts for UNC and UNF decimals and diameters and Metric equivalents, e.g. UNF No.10 is 0.190" which is very close to 3/16" or 4.826mm, which equates to M5

Nuts and bolts can be assembled with dry, oiled or greased threads. From comparisons made with generic sources of information it seems that the figures in the MG Workshop Manual, at least, are probably for oiled threads. Greasing threads can make them liable to come loose. For example I read many years ago that wheel studs should be oiled, not greased.

Although there are a lot of figures here there are still a lot more where no torque figure is given. It is possible that those given here are 'non-standard' torque values and the rest should be tightened to the 'standard' values for the type, size and thread of the nut and bolt. A chart of these 'standard' values is given on this Geno's Garage web page, and another set from Alma Bolt Company & Prime Fasteners.

Also see this list of 'standard' values from the Rover V8 Engine Manual:

By Monte Morris.
Additions by Peter Scott.
MBG GT V8 Workshop Manual Supplement and Rover V8 Engine Manual.
Additions from Haynes.

Application	Engine	Torque (ft-lb.)	Comments
Engine (4-cyl)
Main bearing nuts	All models	70
Flywheel set screws	18G/18GA	40
Gudgeon pin clamp bolts	18G/18GA	25	early models(CBB)
Big-end bolts		+35 to 40	early models(CBB)
Big-end bolts		33	later models (RBB) oiled thread
Cylinder head nuts	18G/18GA	45 to 50
Rocker bracket nuts	All models	25
Oil pump to crankcase	All models	14
Sump to crankcase	All models	6
Cylinder side cover screws	18G/18GA	2
Cylinder side cover screws deep cover	18G/18GA	5
Timing cover 1/4 inch screws	18G/18GA	6
Timing cover 5/16 inch screws	18G/18GA	14
Rear plate 5/16 inch screws	All models	20
Rear plate 3/8 inch screws	All models	30
Water pump to crankcase		25	early models(CBB)
Water pump to crankcase		17	later models (RBB)
Water outlet elbow nuts	18G/18GA	8
Rocker cover nuts	18G/18GA	4
Manifold nuts	All models	15 to 16
Oil filter centre bolt	18G/18GA	15	early models(CBB)
Clutch to flywheel	All models	25 to 30
Carburettor stud nuts	18G/18GA	2
Carburettor stud nuts	All models	15
Distributor clamp bolt (nut trapped)	18G/18GA	4
Distributor clamp bolt (bolt trapped)	18G/18GA	2 to 3
Fan blade fixing screws	18G/18GA	7 to 9
Crankshaft pulley nuts	All models	70
Camshaft nut	All models	60 to 70
Oil pipe banjo	All models	37 max
Front plate 5/16 inch screws	All models	20
Rear engine mounting bolt	All models	38 to 40
Oil pressure relief valve domed nut	All models	43	Pre-1978
Oil pressure relief valve domed nut	All models	40	1978 on
Rocker bracket nuts	All models	25
Air pump mounting screws		18
Spark plugs	All models	18
ENGINE (Factory V8)
Main bearing cap bolts: Nos. 1 to 4		53
Rear		68
Connecting rod cap nuts		33
Cylinder head bolts		68
Rocker shaft to cylinder head bolts		28
Flywheel bolts		55
Oil pump cover bolts		13	WARNING! I got mine up to about 10 and they didn't seem to want to go higher. Bearing in mind they are going into the alloy front cover I stopped. If you look at the 'Other V8' figures there are two - 9ftlb and for Suffix B 3ftlb. 3 seems a bit low for oil under pressure even with Loctite, but 9 is definitely safer than 13.
Oil pressure relief valve plug		33
Timing chain cover bolts		23
Crankshaft pulley bolt		150
Distributor drive gear to camshaft bolt		43
Exhaust manifold bolts		13
Induction manifold bolts		28
Induction manifold gasket clamp bolt		13
Carburettor adapter nuts		18
Water pump bolts: 1/4 U.N.C.		7
5/16 U.N.C.		17
ENGINE (Other V8)
Crankshaft pulley bolt	All models	199
Timing cover to cylinder block bolts **	All models	16
Camshaft gear bolt	All models	37
Rocker cover bolts	All models	6
Rocker shaft to cylinder head bolts	All models	28
Cylinder head bolts *	Not suffix B
Outer row	Not suffix B	51
Centre row	Not suffix B	66
Inner row	Not suffix B	66
Cylinder head bolts *	Suffix B
Stage 1	Suffix B	15
Stage 2	Suffix B	Then 90°
Stage 3	Suffix B	Further 90°
Lifting eye to cylinder head bolts	All models	18
Connecting rod bolts	All models	37
Main bearing cap bolts ***	All models	52
Rear main bearing cap bolts ***	All models	66
Flywheel bolts	All models	59
Drive plate and ring gear assembly bolts	All models	30
Drive plate adapter bolts	All models	59
Oil sump drain plug	All models	30
Oil sump bolts	All models	17
Oil pressure relief plug	All models	33
Oil pump cover to timing cover	All models	9
Oil pump cover plate screws ****	Suffix B	3
Oil strainer bolts	All models	7
Distributor clamp bolt	All models	15
Spark plug	All models	11
Coolant pump/timing cover to cylinder block	All models	16
* Lightly oil threads prior to assembly. ** Coat first three threads with Loctite 242 prior to assembly. *** Coat threads with lubricant EXP16A (Marston Lubricants) prior to assembly. **** Coat threads with Loctite 222 prior to assembly.
Rear Axle
Differential bearing cap bolts	4-cyl	60 to 65	three-quarter floating axle
Pinion bearing nut		135 to 140	three-quarter floating axle
Crown wheel to differential carrier		55 to 60	three-quarter floating axle
Bearing retaining nut		180	three-quarter floating axle
Half-shaft nut		150	Semi floating axle tighten to align to next hole
Differential bearing cap bolts		50 to 55	semi- floating axle
	Factory V8	53
Crown wheel bolts	4-cyl	60 to 65
	Factory V8	63
Pinion nut new spacer only		180 to 220
Pinion nut oil seal change		Adjust to preload	see section Ha Bentley and Leyland Workshop Manual
Rear Suspension
Rear shock absorber bolts	4-Cyl	55 to 60
Shock absorber to side-member nut	Factory V8	58
Front Suspension
Front shock absorber bolts	All models	43 to 45
Brake disc to hub	All models	40 to 45
Brake caliper mounting	All models	40 to 45
Brake caliper clamping bolts	All models	35.5 to 37	Spotted by Ed Woods in the main body of the manual: "Only split the caliper if it is unavoidable, then replace the fluid channel seal, bolts and lock plates. Only bolts supplied by BMC Service Ltd. may be used"
Bearing retaining nut	All models	40	tighten to next split-pin hole
Cross member to body	4-cyl	54 to 56
Cross member to side member nut: Top	Factory V8	55
Bottom	Factory V8	45
Shock absorber pinch bolt	All models	28
Wishbone cross bolt	All models	28
Bottom wishbone pivot to cross-member nut	Factory V8	45
Anti roll bar link	All models	60
Spring pan nuts and screws	All models	22
Stiff nut to crossmember mounting bolt		44 to 46	GHN4 GHD4 GHD5 GHN5 models
King pin to wishbone - lower fulcrum		45
King pin to damper - upper fulcrum		40
King pin trunnion (nut on top of king pin)		60	then tighten to next split-pin hole
Steering
Steering arm bolts	All models	60 to 65
Steering rack fixings		30
Steering wheel nut	4-cyl	41 to 43
Steering wheel nut 9/16 in. UNF	4-cyl	27 to 29	GHN4 GHD4 GHD5 GHN5 models
Steering wheel nut 11/16 in. UNF	4-cyl	41 to 43	GHN4 GHD4 GHD5 GHN5 models
Steering wheel nut	4-cyl	36 to 38	GHN4 GHD4 GHD5 GHN5 some local models
Steering wheel nut	Factory V8	28
Steering column universal joint bolts	All models	20 to 22
Steering rack and pinion bearing nut	All models	40
Steering tie-rod lock nut	All models	33 to 38
Steering lever balljoint nut	All models	34 to 35
Swivel pin nut	All models	60	tighten to align to next hole
Steering column top fixing bolts	All models	12 to 17
Column clamp bolt	Factory V8	7	Note this is given in the manual as "85 lbf inches"
Road wheel nuts	4-cyl	60 to 65
Road wheel nuts	Factory V8	60
Transmission/Gearbox
Mounting to gearbox case		15 to 20	manual transmission
Drive flange nut without overdrive		150	manual transmission
Drive flange nut overdrive Type D		100 to 130	manual transmission
Drive flange nut overdrive Type LH		55 to 60	manual transmission
Front brake band adj. screw locknut		15 to 20	automatic transmission
Rear brake band adj. screw locknut		25 to 30	automatic transmission
Filler tube to transmission case		20 to 30	automatic transmission
Filler tube to connector sleeve nut		17 to 18	automatic transmission
Drive flange nut		55 to 60	automatic transmission
Center support bolts		10 to 18	automatic transmission
Converter to drive plate bolts		25 to 30	automatic transmission
Transmission case to converter housing		8 to 13	automatic transmission
Extension housing to transmission case		8 to 13	automatic transmission
Oil pan to gearbox		8 to 13	automatic transmission
Front servo bolts		8 to 13	automatic transmission
Rear servo bolts		13 to 27	automatic transmission
Pump adaptor to housing screw		2 to 3	automatic transmission
Pump adaptor to housing bolts		17 to 32	automatic transmission
Pump adaptor to transmission case		8 to 18	automatic transmission
Manual shaft locknut		7 to 9	automatic transmission
Pressure adaptor plug		4 to 5	automatic transmission
Drain plug		8 to 10	automatic transmission
Upper valve body to lower valve body scr		20 to 30	automatic transmission
Lower valve body to upper valve body scr		20 to 30	automatic transmission
Oil tube and end plate to valve body		20 to 30	automatic transmission
Valve bodies to transmission case bolts		5 to 9	automatic transmission
Cam bracket screws		20 to 40	automatic transmission
Governor to counterweight screws		4 to 5	automatic transmission
Governor to cover plate screws		20 to 48	automatic transmission
Front servo adjusting screw locknut		15 to 20	automatic transmission
Rear servo adjusting screw locknut		25 to 30	automatic transmission
Starter inhibitor switch locknut		4 to 6	automatic transmission
Downshift cable adaptor bolts		8 to 9	automatic transmission
Filler tube connector to transmission		20 to 30	automatic transmission
Stone guard screws		17 to 19	automatic transmission
Driving flange nut		55 to 60	automatic transmission
Propeller shaft flange nuts	All models	30 to 35
General
Hydraulic brake pipe connection 3/8 UNF		5 to 7
Hydraulic brake pipe connect 7/16 UNF		7 to 10
Master cylinder port adaptors		33	later models (RBB)
Master cylinder reservoir fixing bolts	All models	5
Brake pressure failure switch (nylon)		15
Brake pressure failure switch end plug	All models	200
Brake caliper securing bolts	All models	40 to 45
Brake front servo bolts	All models	8 to 13
Brake rear servo bolts	All models	13 to 27
Brake stone guard screws	All models	17 to 19
Pressure differential switch end plug		17	later models (RBB)
Alternator shaft nut	All models	25 to 30
Alternator mounting bolt	All models	20
Alternator pulley nut	All models	25
Starter motor mounting bolts	All models	30
Gearbox remote control cover to tunnel	All models	44 to 46
Interior mirror special screw	All models	5

I am indebted to Ian John of Caerbont Automotive Instruments for supplying me with a list of TPMs for these speedos.

Note that speedos not in the list with the exact reference number, even though they have the correct TPM figure, may have different speedo cable fitments or night-time illumination or fitting arrangements, making fitting them in an MGB difficult.

Speedometer Reference Numbers
			Chassis No.
Market	Date	Body	From	To	Gearbox		Part No.	Serial No.	TPM	Comments
All markets except Germany	1962-Oct67		101	138400	Standard	MPH	BHA4478	SN6125/04, SN6125/04A, SN6144/00	1060* 1040? 1040*	Jaeger Note 1 Smiths Note 13 Smiths
						KPH	BHA4479	SN6125/05, SN6125/05A, SN6144/01	660* 660! 660*	Jaeger Smiths Smiths
					Overdrive	MPH	BHA4480	SN6125/06, SN6125/06A, SN6144/02	1040* 1020! 1020*	Jaeger Note 1 Smiths Smiths
						KPH	BHA4481	SN6125/07, SN6125/07A, SN6144/03	640! 640! 640!	Jaeger Smiths Smiths
Germany	1962-Oct67		101	138400	Standard?	MPH	BHA4574	SN6144/05	1040	560-14 tyres
					Standard?	KPH	BHA4636	SN6144/15	660	560-14 tyres
					Standard?	KPH	BHA4637	SN6144/13	660	155-14 tyres
					OD?	KPH	BHA4638	SN6144/14	640	165-14 tyres
not Canada, USA, Sweden, Germany, or V8	Nov67-Nov73	Roadster GT	138401 138401	332925 332394	Standard	MPH	BHA4707	SN6144/20	1280*	Note 12
						KPH	BHA4709	SN6144/21	800!	Note 12 use BHA5280
					Overdrive	MPH	BHA4812	SN6144/23A	1280*	Note 12 use BHA5281
						KPH	BHA4813	SN6144/24	800!	Note 12
	Nov67-Sep68		138401	158230	Automatic	MPH	BHA4707	SN6144/20	1280*	Note 12
						KPH	BHA4709	SN6144/21	800!	Note 12
	Nov68-Aug73		158231	328800	Automatic	MPH	BHA4868	SN6144/28	1216	Note 11
						KPH	BHA4869	SN6144/29	760	Note 11
	Nov73-Sep74	Roadster GT	332926 332395	360300 361000	Standard	MPH	BHA5279	SN6144/20BS	1280!	Note 12
						KPH	BHA5280	SN6144/21BS	800!	Note 12
					Overdrive	MPH	BHA5281	SN6144/23BS	1280*	Note 12
						KPH	BHA5282	SN6144/24BS	800!	Note 12
	Sep74-Jun76		360301	410350	Both	MPH	BHA5339	SN5230/13	1000*	Note 12, 80mm
					Both	KPH	BHA5340	SN5230/14	620!	Note 12, 80mm
Canada	Nov67-Jul68		138401	153877	Standard	MPH	BHA4707	SN6144/20	1280*	Note 12
						KPH	BHA4709	SN6144/21	800!	Note 12 use BHA5280
					Overdrive	MPH	BHA4812	SN6144/23A	1280*	Note 12 use BHA5281
						KPH	BHA4813	SN6144/24	800!	Note 12
	Aug68-Jul71		153878	258000	Standard	MPH	37H 3766	SN5226/03, SN5226/05, SN5227/07	1280! 1280! 1280!	80mm
					Overdrive	MPH	37H 3768	SN5226/08, SN5227/12	1280! 1280!	80mm
					Automatic	MPH	37H 4180	SN5227/16	1216	80mm
	Aug71-Apr72		258001	282419	Standard	MPH	BHA5084	SN5231/00	1280!
					Overdrive	MPH	BHA5086	SN5231/04	1280!
	May72-Sep74		282420	360300	Standard	MPH	BHA5161	SN5230/06S	1280!
					Overdrive	MPH	BHA5163	SN5230/08S	1280!
	Sep74-Jun76		360301	410000	Both	MPH	BHA5339	SN5230/13	1000*
	Jun76-1978		410001	?	Both	MPH	AAU 3027	SN5373/00	1000!
Canada & Japan	1978-1979		?	?	Both	KPH	?	?	620?	Note 2
Canada & Japan	1980		?	on	Both	KPH	?	?	620?	Note 2
USA, USA for Germany	Nov67-Jul71		138401	258000	Standard	MPH	37H 3766	SN5226/03, SN5226/05, SN5227/07	1280! 1280! 1280!	80mm
					Overdrive	MPH	37H 3768	SN5226/08, SN5227/12	1280! 1280!	80mm
					Automatic	MPH	37H 4180	SN5227/16	1216!	80mm
	Aug71-Apr72		258001	282419	Standard	MPH	BHA5084	SN5231/00	1280!	Note 10
					Overdrive	MPH	BHA5086	SN5231/04	1280!	Note 10
	May72-Sep74		282420	360300	Standard	MPH	BHA5161	SN5230/06S	1280!
					Overdrive	MPH	BHA5163	SN5230/08S	1280!
	Sep74-Jun76		360301	410000	Both	MPH	BHA5339	SN5230/13	1000*
USA	Jun76-Jun79		410001	498440 (Cal) 503520 (Fed)	Both	MPH	AAU 3027	SN5373/00	1000!	Note 3
	Jun79-Oct80		498441 (Cal) 503521 (Fed)	on	Both	MPH	?	SRM6006/00	1000!	Note 4
Sweden, Germany	Sep69-Jul71		187211	258000	Standard	KPH	BHA4924	SN5227/20	800!	Note 10
					Overdrive	KPH	BHA4925	SN5227/22	800!	Note 10
					Automatic	KPH	BHA4926	SN5227/24	740	Note 10
	Aug71-Apr72		258001	282419	Overdrive	KPH	BHA5087	SN5231/08	800!	Note 10
	May72-Sep74		282420	360300	Overdrive	KPH	BHA5164	SN5230/09S	800!	Note 5
	Sep74-Jun76		360301	410000	Both	KPH	?	?	620?	Note 6
RHD (not Police)	Jun76-Oct78	Roadster GT	410001 410001	480296 481115	Overdrive	MPH	AAU 3035	SN5234/00	1000*	Note 7
RHD (not Police)	Oct78-Oct80	Roadster GT	480297 481116	on on	Overdrive	MPH		SN5234/02	1000*	Note 8
RHD (Police)	Jun76-Oct80		410001	on	Overdrive	MPH	AAU 3036	Z 65465	1040!
V8 (not Police)	Dec72-Jul76		101	2903	Overdrive	MPH	BHA5210	SN5230/11S	960*	80mm, 140mph
V8 (Police)	Dec72-Jul76		101	2903	Overdrive	MPH	BHA5317	Z 63973	980!	Note 9
Notes:		A * after the TPM indicates that I have confirmed the figure on an actual example of the speedo and the number has been confirmed by a manufacturer and repairer of the instruments. A ! after the TPM indicates the number has been confirmed by a repairer of the instruments.
	1	The Parts Catalogue shows these serial numbers as having the same part number but actual instruments and manufacturers data show different TPMs.
	2	Clausager shows Canada and Japan having KPH speedos from 1978, and Canada and Japan 1980 models having 6-digit odometer, but these changes are not shown in the Parts Catalogue.
	3	North American spec including Japan had 4 speedos for 1977 on, probably plastic 'glass' with protruding trip reset button.
	4	85mph speedos with 6-digit odometer, not in Parts Catalogue.
	5	Parts List shows this type continuing till Jun76
	6	Clausager states 80mm from Sep74 LHD roadsters only made for North American market after Jun76
	7	Reads to 120mph, additional kph markings. Figures outside markings, numbers go 10/20/30.
	8	Reads to 120mph, additional kph markings. Figures inside markings, numbers go 10/30/50.
	9	XA5(XAS?),175x14 tyres, 80mm, 140mph
	10	Use with right-angle drive
	11	Axle ratio changed and hence speedo
	12	KPH 620 turns per kilometer have the same gearing as MPH 1000 turns per mile speedos, similarly KPH 800 and MPH 1280.
	13	In Parts Catalogue as SN6124/04A.

Added March 2008
And now for the question of speedo gear ratios! Whereas for the 3-synch cars the speedo tpms varied between non-OD and OD cars (but by less than 2%) the speedos for 4-synch cars quote the same tpms (1280 for chrome bumper cars and 1000 for rubber bumper) but there are still different part and reference numbers for the speedos according to whether the car was non-OD or OD. This continued up to September 76 and the 77 model year, when suddenly there is only one speedo (different again for the 'new' plastic dash) for LHD and one for RHD, still at 1000tpm as for previous rubber bumper cars, but no corresponding change in gearboxes or ODs.

Looking at the parts lists there always were different speedo drive gears and pinions, with different ratios, between non-OD and OD. But whereas the ratio difference is nearly 3% for the 3-synch gearboxes, it is only 1% for the chrome bumper 4-synch (I don't have all the ratio information for the rubber bumper cars). 1% is insignificant (given that speedos in the UK are allowed to over-read by up to 10% but not under-read) so having the same tpms for both is reasonable, but why the different speedo part and reference number if everything else is the same? Even 3% difference for the 3-synch is not that significant in the grand scheme of things, but the speedo tpms for non-OD and OD cars did take this into account. Although even that isn't straight-forward, as the information I have is that Jaeger instruments were 1060 for non-OD and 1040 for OD, whereas the later (1964) Smiths were 1040 for non-OD and 1020 for OD! Whilst the change from crossply tyres to radial may have required a change in gearing, radials weren't available until 1965, and crossplys remained standard on UK cars until 1972.

The bottom line is that while changing a non-OD gearbox to an OD gearbox will introduce an error of nearly 3%, on a 4-synch car changing from a non-OD to an OD gearbox of the same era will only introduce a 1% error and can be ignored. the important thing to remember on 4-synch cars is that if you put a rubber bumper OD gearbox in a chrome bumper car or vice-versa, and don't change the speedo, you will introduce an error of around 20% which is very significant.

And to finally beat this subject to death the table below lists the various gearboxes and what speedo drive gears and pinions were used in each:

Added March 2010: Did I say final? Speedo cables used were as follows:

There is also the question of right-angle drives.

The Parts Catalogues show all cars as having one at the gearbox end (13H 2567) to allow the cable to run alongside the gearbox as it travels forwards. However neither of my cars has one, the cable making a neat enough turn through 90 degrees here, however this may need a slightly longer cable to avoid a tight turn.

The big issue is whether LHD cars had an additional one at the speedo head or not. Again the Parts Catalogues indicate one was always used (BHA 4794 up to 76, the same 13H 2567 as for the gearbox for 77 on), because the cable came up through the same hole in the bulkhead (above the clutch foot rest) as in RHD cars then across the car behind the dash. This would have resulted in too tight a turn behind the speedo in the limited space available, hence the second unit. However some people have indicated their cable goes through the bulkhead in front of the driver, then goes across and down via some unspecified route, which renders a right-angle drive uneccessary, including 3-synch cars using the large hole under the hinge slot. Clausager appears to show a 74 car routed in this manner, but using a smaller hole further above and towards the centre of the car than the large hole (which contains the heat control cable?).

Dating your car by its windows - based on the original compiled by Neil Cairns. Updated October 2008

       .                                       :    .
Jan    TRIPLEX (dot over the T)        Jul     TRIPLEX
        .                                      :     .
Feb    TRIPLEX (dot over the R)        Aug     TRIPLEX
            .                                  .     :
Mar    TRIPLEX                         Sep     TRIPLEX
             .                                  .    :
Apr    TRIPLEX                         Oct     TRIPLEX
       :                                            .:
May    TRIPLEX (double dot over T)     Nov     TRIPLEX
       :.                                            :
Jun    TRIPLEX                         Dec     TRIPLEX

The following sites carry information on a variety of topics:

So good it deserves a line of its own right at the top - a set of 'How to' videos from John Twist and University Motors

six lots from the MGOC

from Paul Kile

Paul Lewis

and Norm Nock all of the Sacremento Valley MG Car Club

	Barney Gaylord's 'The MGA with an attitude' - mainly MGA but some details and much general information will be applicable to the MGB.		MGA and MGB technical information from British Automotive
	Scions of Lucas (SOL). Technical info for MG and other marques much of the 'other marques' info will also apply to MG to some extent.		Skye Poier's 'The MGB Experience' site
	Rich Mason's 'Helpzone'		Tech Tips from the NAMGBR
	Robert Epstein's 'MGB Tech Tips'		John and Elaine Hubbard's 'MGB-GT' pages
	Chicagoland MG Club - Tech tips		for a variety of marques and MG models from Moss Motors (now only available by logging-in)
	Parts sources from (Bob?) Lundgren		Automobile Repair manuals Online (not)
	Robert Bentley manuals		MGB Parts List available online from Moss USA. Other MG models and marques available.
	Miscellaneous MGB info from AutoChart Inc.		Classic car restoration courses at UK Further Education Colleges from Restored Classics
	Recalls and Technical Service Bulletins from Alldata		Fuel Additives Lubricants and Coolant reference information from Stephen Ringlee's Volvo Maintenance FAQ
	UK MOT info from MOTUK (geddit?)		UK MOT info from Haynes
	Using a vacuum gauge for fault diagnosis.		Speedo and tach serial numbers through the years from Anon
	More speedo info from Autochart		Yet more speedo info from Paul Tegler
	Speedo repairs from Anthony Rhodes or as a downloadable PDF		Speedo repairers and suppliers Speedograph Richfield successors to Smiths Industries
	Bespoke and replacement instruments from Caerbont Automotive Instruments		Another on-line Parts Catalogue from Brown and Gammons in the UK
	Handy Reference Information from Pegasus Auto Racing - Decimal inch equivalents copper electrical wire specs and more.		Smiths and Jaeger speedo repairs from Tigers United
	John Twist's Tech Tips hosted by NAMGBR, on a variety of topics.

Body Links:

	Bodywork from John Elwood.		Paint Codes from Paul Tegler's 'Teglerizer' site
	MGB Sills from MGOC		MGB and Midget door locks from MGOC
	MGB rear seats from MGOC		Roadster screen from Lee Daniels (updated link)
	MGB Chrome Bumper Conversion sites from Google		Body Rotisserie from Bob Beaupre
	Body Rotator from Skye Poier		'The Instillation (sic) of Sills & Rockers' from Classic Auto Restoration Services. A commercial site but includes 'How to' and FAQs.
	Hood/top fitting from Washington DC Centre MG Car Club		Remanufactured bodies from British Motor Heritage
	GT heated rear window from MGOC		British car keys cut in the USA by Pete Groh.
	Brief information on fitting a child seat in the back of a GT. The lap and diagonal static belt from Securon can be found here. NOTE: Check the legality of these in the UK following the change in UK law from 18th September 2006, although it seems that systems with an older BS approval marking will remain legal until May 2008. Other than that it is legal to have an unrestrained child (or two) in the back of a GT, but illegal to have them restrained with an unapproved system.

Brake Links:

	Brake service from MGOC		Brake fluid from Veteran Triumph Register
	Servo overhaul on a TR6 from Buckeye Triumphs.		Low brake fluid level warning - note the remote servo can suffer seal failure which causes all the fluid to be sucked out of the master!

Clutch Links:

Cooling Links:

'Advanced Cooling System Basics' (sic) from Stewart Components

Kenlowe engine cooling fan from MGOC

Electrics Links:

	Smartscreen intermittent wiper control. So good I have them on both my MGBs.		Lamp/bulb and fuse info from 'Automotive Lite Bulbs'
	More lamp/bulb info from Daniel Stern Lighting including FAQs, Tech info and 'How To'. Note that headlamp aiming shows LHD, reverse the images for RHD.		Lots of electrics info on the 'The T*****h TR6 Web' much of which is also relevant to MGs.
	Alternator conversions from Bob Muenchausen.		Converting 4-cylinder tachs to V8 from the Britsh V8 Forum.
	Tach calibration and repair from Mark Olsen's Sunbeam Tiger pages. Includes the circuit diagram of the inductive circuit.		Rebuilding a tach with modern electronics from Theo Smit's Tiger pages includes a link to a description of how to modify the inductive tach to work with electronic ignition.
	Tip from Crane (may work with other manufacturers products) if your inductive tach (64 to 72) doesn't work with your new electronic ignition.		Enlargeable coloured wiring diagrams in PDF format from Advance Auto-wire. These differ from the Workshop Manual Haynes Bentley in that associated components are placed together so reducing the amount of wiring snaking about and hence making them easier to follow.
	Lucas relay info on CRC's TVR site.		Lucas Technical catalogues for bulbs, switches etc.
	Racemettle geared starters, contains useful info on the number of pinion teeth used by each model.

Engine Links:

	V8 power for the MGB from Dan Masters		MG V8 conversions from Mike Barnes
	V8 conversion from Glenn somebody or other		More V8 conversion from commercial site V8 Developments
	'MGB V8 Conversions by Roger Parker' - a noted authority		A Buick V8 conversion by Leon Zak
	MG Engines from the TA to the MGF by Neil Cairns		BMC engine numbers from 1952 to 1990 also by Neil Cairns. However the section on Gold Seal numbers doesn't include those for the MGB, for which see here.
	More info from Neil Cairns, this time on the differences between the 18V engine as used in the MGB and that used in the Marina.		Got an 18V engine with a funny number? These were used in the Sherpa van. (Note March 2007: Not currently available but I'll leave this link here for a while in case it comes back.)
	Rover V8 engine number ranges from Capri Racing. Doesn't actually include the factory V8 MGB (or the RV8 as far as I know) but may be helpful if you get hold of an engine for a conversion.		MGB exhaust from MGOC
	Oil change from MGOC		Oil filter study from Russ W. Knize.
	Engine oil bible from 'The Speed-Trap Bible' by Chris Longhurst. Also see the sections on Snakeoils and Additives.		'More Than You Ever Wanted to Know About Motor Oil ' from The Vintage Triumph Register. Biased towards the makes and grades available in the USA.
	Another oil filter study from SHOClub		More oil info, this time from a British biker, but mostly applicable to cars. Explanations of viscosity, detergency, relationship between gear and engine oil viscosity ratings, synthetics and additives ("Don't!" in this last case).
	Another oil filter study. Two words of warning though - this relates to very high output close-tolerance Ford engines, and to me at least the detailed data conflicts with the conclusions.		Compression Tests - from Puma Racing
	Engine weights for many marques by Dave Williams, passed to me by Bob Howard. MG 4-cylinders under 'BL', V8 and V6 under 'Rover'. Some engine dimensions, only for the V8 in the case of MG, also some gearbox weights. See here for Workshop manual info.		Cylinder-head casting numbers - a frequent source of questions - from British Automotive
	MGB cylinder head identification from Sean Brown's Flowspeed.com, mainly for North American spec engines.		A little more MGB cylinder head identification info this time from Paul Walbran Motors in New Zealand.

Fuel Links:

	Carburettor Models by Year from Paul Tegler's 'Teglerizer' site		Setting up SUs from MGOC.
	Polishing SU dashpot covers by Paul Tegler		Float valves from MGOC
	Fuel evaporation/vapour-lock from MGOC		'Living with Unleaded' from Rick Astley
	SU Carburettors by Scott Fisher and Roger Garnett		Tech info from ZTherapy
	THE S.U. VARIABLE CHOKE CARBURETTOR by Malcolm Land - what it is and how it works.		SU Carburettor Tips by Jim Taylor from the Jaguar Clubs of North America, including piston 'drop test' specs
	Unleaded Fuel - a technical guide from Puma Racing.		Detailed pictures of the HIF6 carb linkage pieces on the factory V8 from British Auto.
	SU Fuel Pumps description, rebuilding and modification by Dave Dubois.		RON MON and PON (American) octane ratings explained from Wikipedia and compared by Mad Mole.
	Zenith/Stromberg water choke by Rick Jaskowiak. And for a picture of a manual choke conversion click here.		SU/Butec carb data from Peter & Rita Forbes' Engine Webpages.
	SU carb and fuel pump parts from SU Burlen. Includes spec data on things like piston springs.		The Hitachi-SU Tech Pages from Julian Serles
	'Minty Lamb SU Needle Compare-o-rama'. Shades of Wallace and Gromit, but it is an on-line SU needle comparison and selection program.		Alternatively a downloadable comparison and selection program from Scott A. Beavis.

Gearbox Links:

	Overdrive from MGOC		A gearbox testing tool from Kai Radicke
	Adding overdrive to a non-overdrive gearbox by Octarine Services		Gearbox and axle oil from MGOC
	Theoretical Top Speed calculator from mySportsCar.		Modifying the rear crossmember to give improved access to the gearbox mount bolts. NB: Not sure if this is strictly necessary if you attach the crossmember to the gearbox before you raise the cross-member up to the chassis rails.

Heater Links:

Heater Valve Improvements for BMC B-Series Engines from Bob Muenchausen's 'Muenchausen's Garage'

MGB Heater Rebuild and Upgrade from Chicagoland MG Club

Ignition Links:

	High Energy Ignition systems from the Veteran Triumph Register.		Coil ballast systems from the Veteran Triumph Register.
	Servicing Ignition and Timing from MGOC		Lumenition Ignition from MGOC
	Distributor curves from Paul Tegler's 'Teglerizer' site		Electronic Ignition Systems from Autocar Electrical Equipment Co Ltd
	More distributor info from Doug Jackson's 'British Automotive'.		Even more distributor info from TDC Engineering many Lucas serial numbers not just MG.
	Yet more distributor info from AutoChart Inc.		Tuning (as opposed to 'setting-up') Lucas distributors also from TDC Engineering.
	A problem and solution when installing electronic ignition systems.		Product information for the 123 electronic distributor. For installation and technical data see here.
	Transpo supply the electronic module for the 45DM4 distributor. Select 'Ignition Modules', 'Delco', and it is the DM1906.		Original-spec advance springs, yes advance springs, from Distributor Doctor, although unfortunately only for 25D and not 45D. Other springs available if you can quote dimensions, also all other distributor parts and a rebuilding service.

Propshaft Links:

Driveline alignment - problems and solutions from Drivetrain Specialists of Las Vegas

Rear Axle Links:

	Banjo bearings from MGOC		Rear hub seal from MGOC
	Gearbox and axle oil from MGOC		Wheel hub and rotor/disc measurement points from Wheel Vintiques
	Changing the pinion oil seal without damaging the collapsible spacer the easy way from the MGOC.		Curing rear axle 'clonk' from the MGOC.

Steering and Suspension Links:

	Wheel bearings and discs from MGOC		Banjo bearings from MGOC
	Road springs from MGOC		Rear hub seal from MGOC
	Rack gaiters from MGOC		Lowering a RB MGB from MGOC
	Tube shock conversion from Paul Tegler's 'Teglerizer' site		Suspension bible from 'The Speed-Trap Bible' by Chris Longhurst
	Performance suspension assembly from MGOC		Greasing front suspension from MGOC
	Make your own steering column/rack shaft alignment tool. Original link replaced by a section on these pages as more information has come to light, click on the globe then 'Column/Rack Alignment'.

Wheel Links:

	Tyre sizes and axle ratios from Skye Poier's 'The MGB Experience' site		Tyre sizes and axle ratios from Scott Galaba's BMW M Coupe and Z3 Coupe site.
	Wheels and tyres bible from 'The Speed-Trap Bible' by Chris Longhurst		Tyre sizing sidewall info construction etc from Dunlop
	Tyre Size Comparisons from Club DSM		Wheel and Tyre Sizing from AGP Motorsports
	Tire/Wheel Combination Calculator from Rick Tolan		Lots of stuff on wheels and tyres from the All Morgan site
	Solent Wheels, who apparently make a good job of refurbing V8 wheels where the chrome is peeling. They powder-coat the whole wheel silver, then top-coat the alloy with satin black, and polish the areas round the cut-outs, all for £50. I understand they split the centre from the rim and re-rivet in the process.		My local wire-wheel rebuilder - Phillips & Son, Unit 3, Seven Stars Road, Oldbury, West Midlands, 0121 544 9060, just a couple of minutes from J2 of the M5. The map (click the globe) has the green arrow close to where they actually are between the canal bridge and the A457, even though that is shown as Park Lane and not Seven Stars Road.
	Central Wheel Components. They can make stainless spokes to fit MGB wheels for you to fit but do not work on the wheels themselves, only motorbike wheels. Highly polished they are close to chrome, but are said to resist breakage better.		Weights of many wheels, probably all after-market.
	British Wire Wheel - based in the USA despite the name. Sell both Dunlop and Dayton so a useful price comparison.