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UPRATED CLUTCH . DOG CLUTCH GEAR SET . LIGHTWEIGHT STEEL FLYWHEEL Performance 51 & TUNING Spring Spacer 03 Bump Stop 04 06 Lightened Steel Flywheel 11 Rear Anti-Roll Bar Kit 05 Uprated Clutch Plate 07 TR4/4A Dog Clutch Gear Kit Set of gears, mainshaft and hubs to convert your 4 synchro gearbox to dog engagement. These are straight cut gears and are not suitable, for noise reasons, for road use. Permits clutchless fast gear changes. Non-Overdrive (Ratios: 2.013, 1.515, 1.205, 1:1) TT2215 (10) J-Type Overdrive (Ratios: 2.013, 1.515, 1.205, 1:1) TT2217 Fitting Service To Your Gearbox TGK115 09 TR4A Uprated Clutch Covers & Drive Plates Should you require outright purchase of a gearbox fitted with either of the above, please telephone These components are built specially for fast road/sport your requirements. These kits cannot be fitted to or full competition use. Many TR2 to TR4’s have been crash 1st gearboxes, but then who would want to? 08 converted to diaphragm clutch use. These models can If you have to ask what a dog clutch gearbox is, use the TR4A clutch components listed here. The you probably don’t need one. correct clutch release bearing and sleeve must be fitted. Lightened Flywheels For Use With Standard Gear Ratio’s (Uprated Road Use); (06) Clutch Cover 8.5” TT2201 Your standard flywheel can be lightened to give quicker engine pick-up while (07) Clutch Plate 8.5” (10 x 1.25” Spline) TT2202 still being useable for road applications. All work is carried out to your own 10 unit, weight reduction will depend on requirements and condition of unit. Uprated Road/Competition; Lightened Flywheel ENB11 Clutch Cover 8.5” TT2503 Clutch Plate 8.5” (10 x 1.25” Spline) TT2202 It is preferable for this to be carried out while the engine is being balanced. We can also convert, to special order, TR2-4 Spring clutch flywheels to the For Use With Close Ratio Gears** (Uprated Road Use); later Diaphragm type, call for details. Clutch Cover 8.5” TT2201 Clutch Plate 8.5” (23 x 1” Spline) TT2502 Lightweight Steel Flywheel Full Race; In the past, when tuning your engine, the cast iron flywheel came in for Clutch Cover 8.5” TT2503X some serious attention. As much material would be removed as deemed Clutch Plate* 8.5” (23 x 1” Spline) TT2504 safe. Years of stress caused by engine revs, heat and clutch abuse, may (*Cerrametallic clutch plate, use only with TT2503X). well have pushed this hard-worked part into an unsafe condition. Flywheels and clutches have been known to fail catastrophically. For 7.25” race cover please call your local Moss branch. Our brand new steel lightweight flywheels, that only weigh 9lbs/4kgs, are (08) Release Bearing All GRB211 primarily for race use where improved weight reduction can be fully used Standard Bearing Sleeve 147858 - and appreciated. They can also be used for road use. Many TR2 to TR4’s (09) Bronze Bearing Sleeve 147858X have been converted to diaphragm clutch use. These models can use the TR4A clutch components listed in this section. The correct clutch release Clutch Alignment Tool; bearing and sleeve must be fitted. Use With 10 x 1.25” Spline MM387-220 Use With 23 x 1” Spline GAC5064X Note: Starter motors and ring gears; The starter motor must be matched to the flywheel and ring gear. Rather than fit the original type, it would be a (NOTE; Before ordering please refer to Clutch System, page 95, in the wise precaution to fit one of our pre-engaged starter motors, see page 39. Restoration section of this catalogue reference interchangeability of Note: Ring gear not fitted to steel flywheels, see page 89. Laycock and Borg & Beck units and early versions of our close ratio gear sets). Lightweight Steel Flywheels (Less Ring Gear); (**Important: Earlier version close ratio gear sets, purchased before (11) TR2/4A 4 Bolt Fixing For 8.5” Diaphragm Clutch 1431065X 1999, used a 10 x 1” spline input shaft and should use clutch plates, 4 Cyl. 8 Bolt Fixing For 7.25” Competition Clutch TT2230S TT2702, for uprated use, or, TT2704, for sprint or race use). 4 Cyl. 12 Bolt Fixing For 7.25” Competition Clutch TT2231S DERBY 01332 756 056 . LONDON 020 8867 2020 . MANCHESTER 0161 480 6402 BRAIDED CLUTCH HOSES . UPRATED LAYGEARS . CLOSE RATIO GEAR SET 52 Performance & TUNING Stainless Steel Braided Clutch Hoses 01 J-Type Overdrive Uprated Laygear 02 J-Type Overdrive Bracket & Fitting Kit 04 Close Ratio Gear Set 03 Limited Slip Differential 05 A-Type Overdrive Alloy Diff Cover 06 BRADFORD 01274 735 537 . BRISTOL 0117 923 2523 . DARLINGTON 01325 281 343 SHOCKOVERDRIVE ABSORBERS. UPRATING PERFORMANCE . 5 SPEED BRAKE CONVERSION DISCS . EXHAUST. LIMITED MANIFOLDS. SLIP DIFFERENTIALS AIR FILTERS Performance 53 & TUNING Stainless Steel Braided Clutch Hoses A-Type Overdrive Uprating cont... These steel braided hoses not only look great, but because they don’t swell drive. Cushioning of the drive is not a significant factor on a competition under pressure, they give a much firmer feel to the pedal. overdrive. Due to the much more positive engagement this modification TR2 Lockheed TT3041 should not be considered for road TR’s. The kit includes: relined and uprated (01) TR3 & TR4 TT3041A cone clutch, a modified uni-directional clutch, a larger accumulator piston, TR4A TT3141 uprated operating valve, and replacement accumulator springs. A-Type Overdrive Uprating Kit TGK107 Uprated Laygears J-Type Overdrive Uprating Since its introduction in 1961, the Achilles’ heel of the 4 speed synchro-mesh gearbox - as fitted to TR4/6, Dolomite Sprints and the Big Triumph saloons, See Restoration section for full details. was the laygear and layshaft. Failure of the bearing(s) causes destruction of the This is only supplied as a kit. It requires modifications to the clutch, to layshaft and the bore(s) of the laygear, the resulting debris often destroys many which a grippier lining is bonded, the dashpot assembly and the whole other expensive components. Pressure Relief Valve assembly. An old clutch sliding member is required in exchange for the relined unit supplied. During the mid-1980’s, with racing TR’s in particular suffering repeated gearbox J-Type Overdrive Uprating Kit TGK108 failures, due to the additional power being transmitted, many reconditioners (04) Bracket & Fitting Kit* 211361X modified laygears to take an extra bearing, which cured the fault, but they (*This Bracket Kit allows J type overdrive to fit to A type chassis, TR2 assumed there would always be a reclaimable laygear to salvage - not always to TR4A, without modification. Comes complete with mounting). the case! The solution is to produce laygears with the maximum bearing Bracket & Fitting Kit** 104086ADP configuration in the first place, to extend the life of the gearbox almost (**This Bracket Kit allows allows a saloon A type overdrive casing to indefinitely and, cope with just about any amount of power. Moss uprated fit the TR mounting, 104086 (minor rear casing alterations are required)). laygears come with bearings pre-fitted, ready to install, with no modifications needed. For full details please contact your local Moss branch. These Items Are Included For 2 Reasons: 16 Teeth Uprated Laygear 128107UR 1. The better availability at the time of writing of new and used J-type overdrives. (02) 17 Teeth Uprated Laygear UKC662UR 2. Quite often the overdrive box you’ve acquired after months of searching turns out to be J-type. Remember the J-type O/D also requires the correct gearbox TR4A Uprated Outer Drive Shafts mainshaft in place, pump cam and adaptor plate. It may also require conversion to TR spec: speedo gear, operating pressure and rear flange. These are Brand New uprated/performance drive shafts that can handle up to 250bhp! Need we say any more. See page 151 for full axle details. 5 Speed Gearbox Conversions Uprated Outer Axle Shaft TKC853UR TR4/4A Close Ratio Gear Set Our precision engineered 5 speed gearbox conversion kits include everything you need, including a gearbox unit, to convert your classic to 5 speed. Designed to replace existing units without any body work modifi- Suitable for all Triumph gearboxes with needle roller constant pinion bearings, cations. For full specifications please contact your local Moss branch including 2000 but not Stag or Sprint. Now uses a 1” x 23 spline input shaft to 5 Speed Gearbox Conversion TR2-TR4 TGK120A allow use of a wider range of clutches. It includes 3rd and 4th gear pairs and an adaptor enabling fitment to the ‘big nose’ or imperial ‘spigoted’ mainshaft. Limited Slip Differentials Note: Earlier version close ratio gear sets, purchased before 1999, used a 10 spline input shaft and should use clutch plates TT2702 for uprated use, Limited slip differentials allow maximum drive to the wheels giving more or TT2704 for sprint or race use. Cannot be used in Stags or Sprints. grip under hard acceleration and cornering. (05) Quaife Limited Slip Differential TT2220 (03) Close Ratio Gear Set TT2210 Plate-Type Limited Slip Differential TT2221 Constant Pinion Gear TT2210A Limited Slip Differential Conversion TGK120 Spigot Bearing Sleeve 145008X (Includes fitting LSD to customers own axle, new seals, and any other Countershaft Gear STR548 parts fitted as required. Either type). 3rd Gear (39 Teeth) STR549 Countershaft Constant Gear STR552 Alloy & Magnesium Finned Diff Covers Extra High 1st Gear (31 Teeth) STR550 (Note; Before ordering please refer to the Clutch System, page 95, in the For Alloy Covers for late TR3,TR4 Girling solid axles please refer to page 149. Restoration section of this catalogue reference interchangeability of Laycock Because the original rear differential cover and separate rear mounting and Borg & Beck units, and, early versions of our close ratio gear sets).