JOWETT 1930-1959
	7G (1937-38) Engine Bore & Stroke 77mm x 101.6mm Displacement 946cc Firing order 1,2 Oil pressure (hot) 35 - 40 lb./sq. in. Fuel Supply Carburetor Zenith Choke 23 Main 80 Compensating 80 Economy 130 Slow Running 50 Valving Intake tappet clearance 0.006" (hot) Exhaust tappet clearance 0.006" (hot) Valve-timing indication Sprockets and flywheel Intake valve opens TDC tappet clearance at 0.012" Ignition Breaker gap 0.015" Plug gap 0.025" Ignition timing indication Flywheel Ignition timing TDC (retarded) Clutch Clutch type Single Dry Plate Clutch linings Bonded asbestos Brakes Brake type Bendix-Cowdrey Self-servo Brake linings Bendix-Cowdrey Wheel Alignment Toe-In Nil Camber 2° Caster angle 3° King pin angle 8½° J (1936) Engine Bore & Stroke 63.5mm x 92mm Displacement 1166.4cc Firing order 1324 Oil pressure (hot) 45 - 50 lb./sq. in. Fuel Supply Carburetor Zenith twin Choke 23 Main 65 Compensating 85 Economy 130 Slow Running 40 Valving Intake tappet clearance 0.006" (hot) [early 1936, 0.022] Exhaust tappet clearance 0.006" (hot) [early 1936, 0.022] Valve-timing indication Sprockets and flywheel Intake valve opens TDC tappet clearance at 0.012" Ignition Breaker gap 0.015" Plug gap 0.020" Ignition timing indication Flywheel Ignition timing TDC (retarded) Clutch Clutch type Single Dry Plate Clutch linings Bonded asbestos Brakes Brake type Rod-operated internal expanding Brake linings Ferodo Wheel Alignment Toe-In Nil Camber 2½° Caster angle 4° King pin angle 8½° 7J and 8J (1937-38) Engine Bore & Stroke 63.5mm x 92mm Displacement 1166.4cc Firing order 1324 Oil pressure (hot) 45 - 50 lb./sq. in. Fuel Supply Carburetor Zenith D/D Choke 24 Main 90 Compensating 85 Economy 150 Slow Running 50 Valving Intake tappet clearance 0.006" (hot) Exhaust tappet clearance 0.006" (hot) Valve-timing indication Sprockets and flywheel Intake valve opens TDC tappet clearance at 0.012" Ignition Breaker gap 0.015" Plug gap 0.020" Ignition timing indication Flywheel Ignition timing TDC (retarded) Clutch Clutch type Single Dry Plate Clutch linings Bonded asbestos Brakes Brake type Bendix-Cowdrey Self-Servo Brake linings Bendix-Cowdrey Wheel Alignment Toe-In Nil Camber 2° Caster angle 3½° King pin angle 8½° Javelin 1½ litre (1947) Engine Bore & Stroke 72.5mm x 90mm Displacement 1486cc Firing order 1423 Oil pressure (hot) 50 lb./sq. in. Fuel Supply Carburetor Zenith 30VM4 Choke 23 Main 90 Compensating 50 Economy 170 Slow Running 45 Valving Intake tappet clearance Zero lash hyd. tappets, set with 1⁄16" clearance when dry Exhaust tappet clearance Zero lash hyd. tappets, set with 1⁄16" clearance when dry Valve-timing indication Flywheel Intake valve opens 12° BTDC Ignition Breaker gap 0.012" Plug gap 0.018" Ignition timing indication Flywheel Ignition timing TDC Clutch Clutch type Single Dry Plate (7¼") Clutch linings - Brakes Brake type Girling Hydraulic (Front & Rear) Brake linings - Wheel Alignment Toe-In Parallel to 1⁄8" toe-out, unladen Camber - Caster angle - King pin angle - Javelin 1½ litre (1948) Engine Bore & Stroke 72.5mm x 90mm Displacement 1486cc Firing order 1423 Oil pressure (hot) 50 lb./sq. in. Fuel Supply Carburetor Zenith 30VM4 Choke 23 Main 90 Compensating 55 Economy 170 Slow Running 50 Valving Intake tappet clearance Zero lash hyd. tappets, set with 1⁄16" clearance when dry Exhaust tappet clearance Zero lash hyd. tappets, set with 1⁄16" clearance when dry Valve-timing indication Flywheel Intake valve opens 12° BTDC Ignition Breaker gap 0.010" - 0.012" Plug gap 0.020" - 0.025" Ignition timing indication Flywheel Ignition timing 3⁄8" ATDC on flywheel Clutch Clutch type Single Dry Plate (7¼") Clutch linings - Brakes Brake type Girling Hydraulic (Front & Rear) Brake linings - Wheel Alignment Toe-In Parallel to 1⁄8" toe-out, unladen Camber - Caster angle - King pin angle - Javelin 1½ litre (1949-50) Engine Bore & Stroke 72.5mm x 90mm Displacement 1486cc Firing order 1423 Oil pressure (hot) 50 - 60 lb./sq. in. Fuel Supply Carburetor Zenith 30VM5 Choke 23 Main 90 Compensating 50 Progression 180 Slow Running 45 Valving Intake tappet clearance Zero lash Set dry (Initial clearance 0.060" - 0.090") Exhaust tappet clearance same Valve-timing indication Marks on sprockets and flywheel Intake valve opens 12° BTDC Ignition Breaker gap 0.010" - 0.012" Plug gap 0.020" - 0.025" Ignition timing indication Flywheel Ignition timing 3⁄8" ATDC Clutch Clutch type Borg & Beck Dry Plate (7¼") Clutch linings - Brakes Brake type Girling Hydro-mechanical Brake linings - Wheel Alignment Toe-In 0" - 1⁄8" (toe-out) Camber Nil Caster angle 1¼ King pin angle 10° Javelin 1½ litre (1951-52) Engine Bore & Stroke 72.5mm x 90mm Displacement 1485cc Firing order 1423 Oil pressure (hot) 50 - 60 lb./sq. in. Fuel Supply Carburetor Zenith 30VM5 Choke 23 Main 90 Compensating 50 Progression 180 Slow Running 45 Valving Intake tappet clearance 0.002" (cold) Exhaust tappet clearance 0.006" (cold) Valve-timing indication Sprockets and flywheel Intake valve opens 12° BTDC Ignition Breaker gap 0.010" - 0.012" Plug gap 0.020" - 0.025" Ignition timing indication Flywheel Ignition timing 3⁄8" ATDC Clutch Clutch type Borg & Beck Dry Plate Clutch linings - Brakes Brake type Girling Hydraulic Brake linings - Wheel Alignment Toe-In 0" - 1⁄8" (toe-out) Camber Nil Caster angle 1¼ King pin angle 10° Javelin 1½ litre (1953) Engine Bore & Stroke 72.5mm x 90mm Displacement 1485cc Firing order 1423 Oil pressure (hot) 50 - 60 lb./sq. in. Fuel Supply Carburetor Zenith 30VM5 Choke 23 Main 90 Compensating 50 Progression 180 Slow Running 45 Valving Intake tappet clearance 0.003" (cold) Exhaust tappet clearance 0.006" (cold) Valve-timing indication Sprockets and flywheel Intake valve opens 12° BTDC Ignition Breaker gap 0.014" - 0.016" Plug gap 0.020" - 0.025" Ignition timing indication Flywheel Ignition timing 3⁄8" ATDC Clutch Clutch type Borg & Beck Dry Plate Clutch linings - Brakes Brake type Girling Hydraulic Brake linings - Wheel Alignment Toe-In 0" - 1⁄8" (toe-out) Camber Nil Caster angle 1¼ King pin angle 10° Jupiter Mark 1A (1953) Engine Bore & Stroke (2.855") 72.5mm x (3.545") 90mm Displacement 1485cc Firing order 1423 Oil pressure (hot) 65 - 70 lb./sq. in. Fuel Supply Carburetor Twin Zenith 30VM Choke 27mm Main 115 Compensating 60 Progression 120 Slow Running 45 Valving Intake tappet clearance 0.003" (cold) Exhaust tappet clearance 0.006" (cold) Valve-timing indication Sprockets and flywheel Intake valve opens 12° BTDC Ignition Breaker gap 0.014" - 0.016" Plug gap 0.020" - 0.025" Ignition timing indication Flywheel Ignition timing 3⁄8" ATDC Clutch Clutch type Borg & Beck Dry Plate (7¼) Clutch linings Woven yarn Brakes Brake type Girling Fully Hydraulic Brake linings 3⁄16" thick x 8¾ long Wheel Alignment Toe-In 0" - 1⁄8" (toe-out) Camber 0° Caster angle 1¼ King pin angle 10°