Torque Specs Engine | Gearbox | Overdrive | Drive Shaft/Diff | Front Suspension | Rear Suspension | Steering | Body | Body (US only) Engine Operation Specified Torque (lb.ft) Description (size x length in inches) Air cleaner to backplate 8 1/4 UNF x 1/2 setscrew Air cleaner to carburetor 8 5/16 UNC x 2 1/8 bolt Alternator to mounting bracket and front engine plate 22 5/16 UNF x 4 7/8 bolt Alternator to adjusting link 20 5/16 UNC x 1 setscrew Clutch attachment to flywheel 22 5/16 UNC x 5/8 setscrew Connecting rod bolt (Color dyed) 50 3/8 UNF x 1.65 bolt Connecting rod bolt (Phosphated) 46, 42-46 1147cc 3/8 UNF x 1.65 bolt Chainwheel to camshaft 24 5/16 UNF setscrew Crankshaft pulley nut 90-100 GT6, 150 for 1500 1 13/16" nut Cylinder block water drain plug 35 1/2 x 20 NPT Cylinder head stud to block 42-46 GT6 1.6-l, 65-70 GT6 2-l, 60-80 GT6 Mk3 ? Cylinder head stud to block 45 Spits (except 1500), 46 1500 3/8 UNF stud Cylinder head stud nut 45 - Distributor to pedestal 20 5/16 UNF x 2 bolt Fan attachment 9 1/4 UNF x 3/4 setscrew Flywheel to crankshaft 42-46 GT6, 50-75 GT6 Mk3, 42-46 Spits (not 1500's) 3/8 UNF x 1.03 bolt Flywheel to crankshaft (Cad. Plated) 35-40 (1500) 3/8 UNF x 1.03 bolt Flywheel to crankshaft (Parkarised black) 42-50 (1500) 3/8 UNF x 1.03 bolt Fuel pump to cylinder block 12-14 5/16 x 1.16 stud Gearbox and rear engine plate to block 14 5/16 UNF x 1.56 stud Manifold inlet to exhaust 14-16 5/16 UNF stud Manifold to head 20-22 GT6, 25 1500 3/8 UNF stud Main bearing cap bolts 50-55 GT6, 55-60 1147cc, 65 1500cc 7/16 UNF x 3 bolt Oil sump drain plug 20-22 GT6, 25 1500 3/8 Dryseal tapered plug Oil pump to block 6-8 GT6 1.6l, 8-10 GT6 2l, 20-22 5/16 UNF x 5/8 setscrew Oil pressure switch 14 3/8 x 18 NP Tapered plug Oil seal block attachment 14 5/16 UNF x 0.94 screw Rocker Cover to head 2 5/16 UNF x 4.13 stud Rocker pedestal nut to cylinder head 24-26 GT6, 26-34 GT6Mk3, 28-30 Spits (not 1500), 32-34 1500 3/8 UNF x 3.09 stud Rear crankshaft seal 20 5/16 UNF x 1 1/8 setscrew Rear engine mounting platform on frame 20 5/16 UNF x 5/8 setscrew Sealing block to engine plate 20 5/16 UNF x 5/8 setscrew Spark plug to head 25 14 mm x 3/4 long thread Starter motor to transmission 34 3/8 UNF x 2 1/8 bolt Timing cover to front engine plate 10 5/16 UNF x 3/8 setscrew Timing cover to front engine plate 20 5/16 UNF x 7/8 setscrew Timing cover to front engine plate 16 5/16 UNF x 1.16 stud Water elbow to water pump 20 5/16 UNF x 1 3/4 bolt Water elbow to water pump 20 5/16 UNF x 1 setscrew Water pump bearing housing to pump 14 5/16 UNF x 1.16 stud Water pump to cylinder head 20 5/16 UNF x 2 1/4 bolt Water pump to cylinder head 20 5/16 UNF x 2 3/4 bolt Water pump to cylinder head 20 5/16 UNF x 2 3/8 bolt top Gearbox Operation Specified Torque (lb.ft) Description (size x length in inches) Boss to clutch housing 20 5/16 UNF x 7/8 setscrew Clutch to gearbox case 32 3/8 UNF x 1 wedgelock bolt Clutch to gearbox case 32 3/8 UNF x 1 1/8 setscrew Cover to gearbox case 9 1/4 UNF x 1/2 setscrew Cover plate to top cover 9 1/4 UNF x 1/2 setscrew Flange to mainshaft 70-85 early cars, 120 MkIV & 1500 5/8 UNF nut Magnetic drain plug 25 3/8 x 18 Dryseal plug Oil filler plug 25 3/8 x N.P. taper plug Reversing light and seat belt switches 7 10 mm switch Reverse idler spindle location screw 14 5/16 UNF x 1 1/2 pointed screw Selector shaft to forks 37 5/16 UNF x 0.84 taper setscrew Slave cylinder to boss 9 5/16 UNF x 2 1/4 bolt Slave cylinder to clutch housing 21 8 mm x 35 mm bolt Slave cylinder attachment 20 5/16 UNF x 7/8 setscrew Top cover to gearbox case 10 1/4 UNF x 1 7/8 bolt Top cover to gearbox case 10 1/4 UNF x 7/8 setscrew top Overdrive (J Type) Operation Specified Torque (lb.ft) Description (size x length in inches) Adapter to gearbox 9 1/4 UNF setscrew Overdrive to adapter 7 1/4 stud Overdrive to rear engine mounting 25 3/8 UNF/UNC stud Rear engine mounting attachment 38 7/16 UNF bolt Steady strap to overdrive unit 20 5/16 UNF stud top Drive Shaft, Diff and Rear Axle Operation Specified Torque (lb.ft) Description (size x length in inches) Axle mounting plate to hypoid housing 32-36 early cars, 38 MkIV & 1500 3/8 UNF Back plate attachment (axle shaft and hub) 20 5/16 UNF bolt Bearing cap to housing 38 3/8 UNF x 1.84 bolt Crown wheel to differential unit 35-40 early cars, 46 MkIV & 1500 3/8 UNF x 0.72 bolt Front and rear attachment of prop (drive) shaft 34 3/8 UNF x 1 bolt Hub to axle shaft 120 5/8 UNF Hypoid housing to rear axle housing 20 5/16 UNF x 1 setscrew Hypoid flange to pinion 70-85 early cars, 120 MkIV & 1500 5/8 UNF Plugs, drain and filler 25 3/8 x 18 Dryseal Rear axle to frame 45 7/16 UNF x 7.4 bolt Rear axle nose mounting to frame 34 3/8 UNF Special stud Road spring attachment 34 3/8 UNF stud Shaft joint to inner axle shaft 46 3/8 UNF stud top Front Suspension Operation Specified Torque (lb.ft) Description (size x length in inches) Anti-roll bar attachment to chassis 4 5/16 UNF "U" bolt Anti-roll bar link assembly 45 7/16 UNF Anti-roll bar stud 14 3/8 UNF stud Ball assembly to upper wishbone 20 5/16 UNF x 2 1/4 bolt Ball pin to vertical link 38 7/16 UNF ball pin Brake caliper to mounting plate 65 7/16 UNF x 1.31 bolts Brake disc 34 3/8 UNF x 1 bolt Damper attachment 46 7/16 UNF bolt Front suspension and engine mounting bracket to frame 32 3/8 UNF x 1 setscrew Front suspension and engine mounting bracket to frame 32 3/8 UNF x 1 1/8 bolt Fulcrum bracket to lower wishbone 32 3/8 UNF x 2 3/8 bolt Fulcrum bracket to upper wishbone 32 3/8 UNF x 2 1/4 bolt Fulcrum bracket to upper wishbone 32 3/8 UNF x 2 1/2 bolt Stub axle to vertical link 65 1/2 UNF on stub shaft Tie rod end ball joint assembly 32 3/8 UNF Tie rod lever and dust cover to vertical link 65 7/16 UNF x 1.88 bolt Trunnion to wishbone 45 7/16 UNF x 2 1/2 bolt Wheel bearing nut to hub 5 while spinning hub then back off to nearest flat slotted nut Wire wheel adaptor nuts to hub 45 ? Wishbone assembly to frame 25 3/8 UNF stud top Rear Suspension Operation Specified Torque (lb.ft) Description (size x length in inches) Damper fulcrum pin 48 1/2 UNF fulcrum pin Damper lower attachment 38 7/16 UNF Pivot bracket to body floor 32 3/8 UNF x 1 7/8 setscrew Radius arm attachment to pivot brackets and links 32 3/8 UNF x 2 1/4 bolt Spring to pivot bracket 20 5/16 UNF 2 5/8 bolt Spring ends to vertical links 48 7/16 UNF bolt Vertical link plates to rear hub inner 48 7/16 UNF x 3 3/8 bolt Wire wheel adaptor nuts to hub 45 ? top Steering Operation Specified Torque (lb.ft) Description (size x length in inches) Ball joint to tie rod lock nut 38 1/2 UNF on tie rod Column lower assembly to bracket 9 1/4 UNF x 1/2 setscrew Coupling lower to upper clamp 9 1/4 UNF bolt Coupling pinch bolt 14 5/16 UNF x 1 1/4 bolt Rack mounting' to frame 16 5/16 UNF "U" bolt Road wheel to hub 48 3/8 UNF stud Safety clamp socket setscrew 20 7/16 UNF setscrew Steering column lock attachment tighten to sheer 5/19 UNF torque head screw Steering column safety clamp 9 1/4 UNF bolt Steering wheel to column 34 9/16 UNF x 1 1/16" nut top Body Operation Specified Torque (lb.ft) Description (size x length in inches) Accelerator mounting bracket 20 5/16 UNF x 1 1/2 bolt Accelerator mounting bracket to dash 9 1/4 UNF X 1/2 setscrew Bonnet hinge pivot to support bracket 32 3/8 UNF 1 7/8 setscrew Bumper to rear body wing sides 14 5/16 UNF x 3/4 setscrew Bumper assembly to rear support and support attachment 32 3/8 UNF setscrew Clutch and brake pedal mounting bracket 9 1/4 UNF x 5/8 setscrew Clutch and brake master cylinder attachment 20 5/16 UNF x 7/8 setscrew Door hinge to body 20 5/16 UNF x 7/8 setscrew Door hinge to door 14 5/16 UNF x 3/4 setscrew Seat slide attachment 9 1/4 UNF x 7/8 setscrew Seat slide to floor 9 1/4 UNF x 3/4 setscrew Seat belt attachment to tunnel and sill 32 7/16 UNF special bolt Seat belt attachment to rear wheel arch 32 7/16 UNF special bolt top Body (US Models only) Operation Specified Torque (lb.ft) Description (size x length in inches) Front bumper to impact shock absorber 9 1/4 UNF x 7/8 setscrew Front impact shock absorber to pivot support bracket 9 1/4 UNF x 5/8 setscrew Rear bumper impact shock absorber attachment 9 1/4 UNF x 7/8 setscrew Rear bumper impact shock absorber attachment 9 1/4 UNF x 1 setscrew Rear bumper to support brackets 20 5/16 UNF x 5/8 setscrew Rear impact reinforcements to trunk floor 32 3/8 UNF x 7/8 setscrew Rear impact reinforcements to trunk floor 32 3/8 UNF 1 1/2 bolt Rear impact shock absorber side wall stiffening 9 1/4 UNF x 3/4 setscrew top The above information came from the Robert Bentley Workshop Manual. 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