ASTON MARTIN 1930-1959
	2-litre Sports and "Spa" Replica (1949) Engine Bore & Stroke 82.55mm x 92mm Displacement 1970cc Firing order 1,3,4,2 Oil pressure (hot) 50 lb./sq. in. Fuel Supply Carburetor S.U. Needle DR Needle Valving Intake tappet clearance 0.012" (hot) Exhaust tappet clearance 0.012" (hot) Valve-timing indication Flywheel Intake valve opens 10° BTDC Ignition Breaker gap 0.012" Plug gap 0.020" - 0.025" Ignition timing indication Flywheel Ignition timing - Clutch Clutch type Borg & Beck Single Dry Plate Clutch linings - Brakes Brake type Girling Hydraulic Brake linings - Wheel Alignment Toe-In 1⁄8" Camber 2° 45' Caster angle 1° King pin angle Nil DB2 (1951-53) Engine Bore & Stroke 78mm x 90mm Displacement 2580cc Firing order 1,5,3,6,2,4 Oil pressure (hot) 70 - 75 lb./sq. in. at 4000 rpm Fuel Supply Carburetor Twin S.U. H4 Needle GB Needle Valving Intake tappet clearance 0.012" (cold) Exhaust tappet clearance 0.013" (cold) Valve-timing indication Flywheel Intake valve opens 9° 30' BTDC Ignition Breaker gap 0.012" Plug gap 0.022" Ignition timing indication Flywheel Ignition timing 10° BTDC Clutch Clutch type Borg & Beck Single Dry Plate Clutch linings - Brakes Brake type Girling Hydraulic Brake linings Mintex M11 Wheel Alignment Toe-In 1⁄8" Camber 2° 45' Caster angle 2° 15' King pin angle Vertical DB2-4 (1954) Engine Bore & Stroke 78mm x 90mm Displacement 2580cc Firing order 1,5,3,6,2,4 Oil pressure (hot) 70 - 75 lb./sq. in. at 4000 rpm Fuel Supply Carburetor Twin S.U. H4 Needle RJ Needle Valving Intake tappet clearance 0.012" (cold) Exhaust tappet clearance 0.014" (cold) Valve-timing indication Flywheel Intake valve opens 9° 30' BTDC Ignition Breaker gap 0.012" Plug gap 0.022" Ignition timing indication Flywheel Ignition timing 10° BTDC Clutch Clutch type Borg & Beck Single Dry Plate Clutch linings - Brakes Brake type Girling Hydraulic Brake linings Mintex M11 Wheel Alignment Toe-In 1⁄8" Camber 2° 45' Caster angle 2° 15' King pin angle Vertical DB Mark II, III (1956-59) Engine Bore & Stroke 83mm x 90mm Displacement 2922cc Firing order 1,5,3,6,2,4 Oil pressure (hot) 60 lb./sq. in. at 4000 rpm Fuel Supply Carburetor Twin S.U. H6 Choke 1¾" Needle SV Needle Valving Intake tappet clearance 0.012" (cold) Exhaust tappet clearance 0.014" (cold) Valve-timing indication Timing marks on camshaft sprockets and flywheel Intake valve opens 10° ATDC at 0.012 - 0.014" clearance (intake and exhaust 0.1" open) Ignition Breaker gap 0.012" - 0.014" Plug gap 0.022" Ignition timing indication Mark on flywheel (Exhaust) Ignition timing 10° BTDC Clutch Clutch type Borg & Beck BB9/179B Single Dry Plate (1959=9A6G) Clutch linings Raybestos WR7 Brakes Brake type Girling Hydraulic (front disc, rear drum) Brake linings Ferodo Wheel Alignment Toe-In 1⁄8" Camber 2° 45' Caster angle 2° 15' King pin angle Vertical DB4 (1959) Engine Bore & Stroke 92mm x 92mm Displacement 3670cc Firing order 1,5,3,6,2,4 Oil pressure (hot) 50 lb./sq. in. at 3000 rpm Fuel Supply Carburetor Twin S.U. HD8 Choke 2" Needle UJ Needle Valving Intake tappet clearance 0.009" - 0.011" (cold) Exhaust tappet clearance 0.010" - 0.012"(cold) Valve-timing indication Timing cover and vibration damper Intake valve opens TDC at 0.010" open 0.064"; exhaust TDC at 0.011" open 0.040" Ignition Breaker gap 0.014" - 0.016" Plug gap 0.022" Ignition timing indication 13⁄16" BTDC mark on T.V.D. Ignition timing 10° - 12° BTDC Clutch Clutch type Borg & Beck 10 A6IG Clutch linings Mintex 7/240 Brakes Brake type Dunlop disc Mk. II, servo assisted Brake linings Mintex M33 Wheel Alignment Toe-In 1⁄8" Camber 1/3° to 1½° Caster angle 1° to 1¼° King pin angle 5°