The "Mad Metrics" in question were used by Morris Motors for many years, as a result of buying up the Hotchkiss works (they were French manufacturers of machine guns who "relocated" away from the advancing Germans during WWI). They are a fine metric thread of 8mm x 1.0mm pitch, and are used in all places on the XPAG engine and gearbox instead of 5/16" BSF. Where marked "13mm head" they are H.T. mass-produced bolts, and therefore very cheap. They can be tightened quite satisfactorily using a 5/16" BSF socket. Main bearing studs are also fine thread, but all others are standard metric with metric heads where indicated (unless they are BSP, used for oil pipe bolts, which have BSF/BSW sized heads). Most engine parts are common to XPAG engines as fitted to TB, TC, TD and TF. Some will even fit the TA & S, V, W engines - although most are different. The majority of TA engine bolts are available to order. Front and rear axle parts will fit TA, TB & TC, and many are common to MMM cars. If you don’t see it listed, just ask! Pt. No.

Description

XA001 XA002 XA003 XA004 XA005 XA005a XA006 XA007 XA008 XA008a XA009 XA010 XA010a XA011 XA012 XA013 XA014 XA015 XA016 XA016a XA017 XA018 XA019 XA019a XA020 XA021 XA022 XA022a XA023 XA024

Cylinder head stud, EN24T, rolled threads Cylinder head nut, EN16T Main bearing stud, EN24T, rolled threads Main bearing stud nut, slotted as original Sump bolt, side, 20mm long, H.T. (13mm head) Sump bolt, side, 20mm long, EN16T (5/16” BSF head) Sump bolt, rear (1/4" BSF deep slotted head) Sump bolt, front (1/4" BSF deep slotted head) Bellhousing bolt, 25mm long, H.T. (13mm head) Bellhousing bolt, 25mm long, EN16T (5/16” BSF head) Timing cover bolt, rear (13mm head) - use XA005 Timing cover bolt, short, H.T. (13mm head) Timing cover bolt, long, H.T. (13mm head) Rocker pedestal bolt, large, H.T. (17mm head) Rocker pedestal bolt, small, H.T. (13mm head) Lock tab washer for XA011/012 Water pump stud, long Water pump stud, short Mad metric 8mm nut, for above (13mm AF) Mad metric 8mm nut, correct spanner size (5/16" BSF) Water pump bolt, long, use XA008 Water pump bolt, short, use XA005 Water elbow bolt, use XA008 Water elbow stud (use XA016 or 016a nuts) Head rear cover bolt, use XA005 Rocker cover stud Tappet cover stud Tappet cover tube nut, brass Exhaust manifold stud Exhaust manifold nut - use XA016

No. Req. 10 10 6 6 10 10 2 2 10 10 2 3 2 4 4 4 1 1 2 2 1 1 4 2 4 2 3 3 4 4

Price ea. £1.75 £0.75 £2.25 £2.25 £0.25 £1.00 £1.50 £1.50 £0.25 £1.00 £0.25 £0.80 £1.20 £1.00 £1.20 £0.50 £1.00 £1.00 £0.10 £0.25 £0.25 £0.25 £0.25 £1.00 £0.25 £1.25 £1.00 £2.00 £1.25 £0.10

Pt. No.

Description

XA025 XA026 XA027 XA028 XA028a XA029 XA030 XA031 XA032

Exhaust down-pipe stud, 10mm as original Exhaust down-pipe nut, brass to suit above Clutch cover bolt - use XA005 Starter motor bolt (Allen skt. head) Starter motor bolt (orig. 3/8” BSF head) Flywheel fixing bolt, HT (Allen skt. head) Sump baffle bolt Oil pump bolt, long (88mm), 1/4” BSF head Oil pump bolt, medium (83mm) , 1/4” BSF head (TC & early TD use 4 short & 2 medium) Oil pump bolt, short (65mm), 1/4” BSF head (TD>14223 use 2 short, 4 medium) Block side oil gallery plug Block, internal oil gallery plug Camshaft bearing locking bolt Timing chain tensioner bolt, Metric head Timing tensioner spring Fan blade bolt, TB/TC (8mm head) Fan blade bolt, TD/TF (8mm head) Sump plug, solid brass, correct head, TB/C/D/F Sump plug, solid brass, correct head, TA, use GB001 Sump plug, as XA039, with magnet Sump plug, as XA039a, with magnet Oil pump relief valve cap, brass, 25mm x 1.0mm thread Core plug set, 6 small + 2 large Core plug for block, large (48mm.) Core plug for block, small (35mm.) Core plug for block, camshaft (45mm) Distributor Clamp Bolt Lip-seal for front of crankshaft, Viton rubber ‘Dowty’ washer, external oil pipe to head ‘Dowty’ washer, pump/filter banjo, large (use with XA048) ‘Dowty’ washer, pump/filter banjo, small Banjo bolt for external oil filter (to suit XA046/47) Head gasket, ‘Banana’ water holes Head gasket, Round holes Sump gasket Exhaust Manifold gasket, TC/TD Exhaust Manifold gasket, TD Mk. II/TF Down Pipe gasket Rocker Cover gasket Side Cover gasket Water Pump gasket Thermostat gasket Water Elbow (bypass) gasket Water Outlet gasket Rear Head Water Cover gasket Timing Cover gasket Engine Bearer Plate gasket Oil Pump gasket, TC Oil Pump gasket, TD/TF Oil Pickup gasket, TC Oil Pickup gasket, TD/TF

XA033 XA034 XA034a XA035 XA036 XA036a XA037 XA038 XA039 XA039a XA040 XA040a XA041 XA042 XA042a XA042b XA042c XA043 XA044 XA045 XA046 XA047 XA048 XA049 XA049a XA050 XA051 XA051a XA052 XA053 XA054 XA055 XA056 XA057 XA058 XA059 XA060 XA061 XA062 XA062a XA063 XA063a

No. Req. 3 3 6 3 3 4 4 2 2/4

Price ea. £1.00 £0.50 £0.25 £0.50 £1.50 £1.50 £0.25 £1.00 £1.00

2/4 5 2 2 2 1 4 4 1 1 1 1 1 1 2 6 1 1 1 4 3 3 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

£1.00 £0.80 £0.50 £2.20 £0.60 £1.50 £0.25 £0.25 £5.00 £5.00 £5.50 £5.50 £4.50 £5.00 £0.75 £0.75 £0.75 £2.50 £4.00 £0.40 £0.40 £0.40 £5.00 £25.00 £30.00 £7.50 £2.50 £2.50 £4.00 £4.00 £2.50 £0.40 £0.40 £0.40 £0.40 £0.70 £1.00 £0.50 £0.70 £0.70 £0.40 £0.40

Pt. No. XA064 XA065 XA066 RA001 RA001a RA002 RA002a RA003 RA003a

Description

Rear Main gasket Oil Thrower gasket Timing Chain Halfshaft, EN24T, 50 tons tensile, N/TA/TB/TC Halfshaft, EN24T, 50 tons tensile, F/J/L/P Rear hub, N/S, TA/TB/TC Rear hub, N/S F/J/L/P Rear hub, O/S, TA/TB/TC Rear hub, O/S, F/J/L/P Pressing shaft into hub RA004 Rear hub bearing carrier, TA/TB/TC, EN24T steel, studded RA004a Rear hub bearing carrier, F/J/L/N/P, EN24T steel, studded RA005 Studs for RA004/004a RA006 Set of 12 3/8" BSF thin nuts & washers for above RA006a Set of 8 5/16" BSF C/S brake drum screws RA007 6208ZZ rear hub bearing, with or without 2 dust shields RA008 M208 heavy-duty bearing RA009 Rear hub oil seal, double lip, TA/B/C (fits in RA004) RA009a Rear hub oil seal, double lip, MMM (fits in RA004a) RA014 SPECIAL! Rear hub bearing nut kit (50mm AF hexagon nuts with lip-seal, plus tab washers) RA015 Spare lip -seals (change every 5000 miles) RA016 Locking tab washers for RA14 or std. Hub nuts RA017 SPECIAL! Crown Wheel & Pinion, High Ratio 37/8 (4.625:1) RA017a TA original ratio 39/8 (4.875:1) Crown Wheel & Pinion RA017b TC original ratio 41/8 (5.125:1) Crown wheel & Pinion RA017c NEW! for MMM, 39/8 (4.875:1) CW & P for F/J/L/P RA018 MRJ25 (=N305) rear pinion roller thrust bearing RA019 3MDJT25 original brass cage front pinion thrust ball brg. RA020 3305 replacement front pinion thrust ball bearing RA021 Pinion Taper Roller bearings, set of 2 (replaces RA18/19) RA021a Set of Shims for RA021, with full machining instructions RA022 Machining of pinion housing for RA021 conversion RA023 LJT35 (=7207) diff. carrier thrust ball bearing RA024 30207 diff. carrier taper roller (replaces above) RA025 Diff. Housing cap oil-seal modern. Inc. machining RA026 Setting-up C.W.& P. inc. new H.T. bolts RA027 Complete diff. overhaul (includes. RA017,21,22,24,25,26) RA028 NEW DESIGN! Half-shafts in EN24T, TAPER fit in hub RA029 Machining of old (or new) hub to suit above (RA028/29 eliminates the hub splines & allows re-use of some old hubs) RA030 Crown wheel adjuster nut locking washer (laser cut), TA/B/C RA030a Crown wheel adjuster nut tab washer (MMM, early TA type) RA031 Crown wheel adjuster nut, TA/B/C (also fits MMM with RA030) RA032 Lock bolt for RA031 RA033 Pinion Drive Flange, TA/B/C RA034 Nut for RA033 (thread suits RA017a/b/c) RA035 NEW! Differential housing, re-manufactured, four star, for use with your original spider and gears (T-type and MMM) RA036 Drain plug, rear axle, improved design RA036a Drain plug, rear axle, with Magnet FA001 Front axle to spring holding bolts

No. Req. 1 1 1 2 2 1 1 1 1 A/R 2 2 12 1 1 2 2 2 2 1

Price ea. £2.00 £0.40 £10.00 £35.00 £35.00 £60.00 £60.00 £60.00 £60.00 £5.00 £85.00 £85.00 £2.50 £2.00 £2.00 £13.00 £33.00 £2.50 £2.50 £30.00

2 2 1 1 1 1 1 1 1 1 1 1 2 2 1 A/R A/R 2 A/R

£2.50 £0.50 £330.00 £330.00 £330.00 £325.00 ££25.00 £40.00 £25.00 £32.00 £2.50 £25.00 £16.00 £13.00 £25.00 £150.00 £550.00 £85.00 £25.00

2 2 2 2 1 1 1

£7.50 £0.50 £10.00 £1.50 £55.00 £5.00 £250.00

1 1 8

£5.00 £5.50 £5.50

Pt. No.

Description

FA002 FA003 FA004 FA005 FA006 FA007 FA008 FA009 FA010 FA011 FA012 FA013 FA014 FA015 FA016 FA017 FA018 GB001 GB001a GB002 GB003 GB004 GB005 GB006 GB007 GB008 TA001 TA001a TA002 TA002a TA003 TA004

Front hub, N/S, studs fitted, MMM & TA/B/C Front hub, O/S, studs fitted, MMM & TA/B/C Replacement studs for above Set of nuts & washers for above - use RA006 LJ25 (=6205) inner hub ball bearing MJ20 (=6304) outer hub ball bearing Front hub bearing spacer Front hub taper rollers, set of 4 with shims, full instructions inc. Set of shims for two hubs, with instructions Hub oil seal, double lip King pin cotter bolt, correct pattern, large head Stub axle nut, LHS (LH thread) Stub axle nut, RHS (RH thread) Stub axle special dished washer Stub axle, inner seal spacer ring Wheel spinner, MG logo Kingpin, complete set includes. FA012 Gearbox drain plug, standard = TA engine sump plug Gearbox drain plug, with magnet = - do Gearbox top cover stud Gearbox top cover nut - use XA016 Gearbox top cover gasket Gearbox rear cover gasket Gearbox rear mounting bolts First motion shaft bearing, MJ35G (6307N) Mainshaft bearing, 3/MJ25G (6305N) Helicoil, 8 x 1.0mm, stainless steel Helicoil, 10 x 1.5mm, stainless steel Helicoil insertion kit, 8 x 1.0mm, with 10 inserts Helicoil insertion kit, 10 x 1.5mm, with 10 inserts Hire of above kits (deposit of £33 required) 6 x 1.0mm taper tap, carbon steel 6 x 1.0mm taper tap, H.S.S. 6 x 1.0mm plug tap, carbon steel 6 x 1.0mm plug tap, H.S.S. 6 x 1.0mm thread die, carbon steel 6 x 1.0mm thread die, H.S.S. 8 x 1.0mm taper tap, carbon steel 8 x 1.0mm taper tap, H.S.S. 8 x 1.0mm plug tap, carbon steel 8 x 1.0mm plug tap, H.S.S. 8 x 1.0mm thread die, carbon steel 8 x 1.0mm thread die, H.S.S. 10 x 1.5mm taper tap, carbon steel 10 x 1.5mm taper tap, H.S.S. 10 x 1.5mm plug tap, carbon steel 10 x 1.5mm plug tap, H.S.S. 10 x 1.5mm thread die, carbon steel 10 x 1.5mm thread die, H.S.S. Contact set, #407050, genuine Lucas in box Contact set replacement, CI type Rotor arm, #400051, orig. Lucas, very rare!

TA005 TA006 TA007 TA008 TA009 TA010 TA011 TA012 LE001 LE001a LE002

No. Req. 1 1 A/R 1 2 2 2 1 1 2 2 1 1 2 2 4 1 1 1 6 6 1 1 4 1 1 A/R A/R 1 1 A/R A/R A/R A/R A/R A/R A/R A/R A/R 1 1 1

Price ea. £60.00 £60.00 £2.50 £2.00 £6.50 £6.50 £5.50 £40.00 £5.00 £2.50 £4.00 £2.50 £1.00 £2.00 £5.50 £17.50 £68.00 £5.00 £5.50 £1.00 £0.10 £1.50 £1.00 £0.50 £15.00 £12.00 £0.35 £0.35 £30.00 £32.00 £3.00 £2.00 £6.00 £2.00 £6.00 £4.00 £12.00 £7.00 £21.00 £7.00 £21.00 £8.00 £24.00 £2.00 £6.00 £2.00 £6.00 £4.00 £12.00 £9.00 £3.50 £25.00

Pt. No.

Description

LE002a LE003 LE003a LE003b LE004 LE005 LE006 LE007 BR001 BR002 BR003 BR004 BR005 BR006

Rotor arm, original pattern, CI type Distributor base-plate, soldered condenser, #409613, original Lucas Distributor base plate, removable condenser Replacement condenser for LE003a TC Starter motor switch, #ST10, Lucas TC Starter motor brush set, #255659 TC Dynamo brush set, #203148 TC Starter Bendix anti-rattle spring Brake master cylinder repair kit Brake master cylinder return spring Slave cylinder rubbers, set, front Slave cylinder rubbers, set, rear Brake linings with rivets, set of 4 Brake pipe protection coil, stainless steel, enough for 1 car

No. Req. 1 1 1 1 1 1 1 1 1 1 2 2 2 1

Price ea. £5.00 £25.00 £12.50 £3.50 £15.00 £6.00 £6.00 £4.00 £12.00 £1.00 £5.00 £5.00 £22.50 £15.00

MANY OTHER ITEMS NOT LISTED - JUST ASK! All commonly used Stainless Steel wood-screws in stock e.g. 1 1/2" x no.10, pack of 12 Bulkhead bolts, plated, with 2 large washers, spring washer & nut 1.00 ALL nuts & bolts for T-types, BSF HT (plated or stainless) either in stock or any size to order. ANY tap or die either in stock or available, BSF, BSW, BSP, UNF, metric etc. etc.

2.00

N.B. "Mad Metrics" is independent of the T-Register: please make cheques payable to R.A. Furneaux. Postage is extra to above prices. Thus considerable savings may be made, especially on heavier items, by collecting from Stoneleigh M.G. Spares day (Feb.), M.G.C.C. Silverstone (July,) or Beaulieu Autojumble (September ). Whilst all parts supplied (except original Lucas) are newly manufactured to the highest possible specifications, no liability can be accepted in respect of loss or damage arising from their use. It is the purchaser's responsibility to ensure that they are suitable for the purpose intended. April 2009