Manual Transmission — Specifications (Opel Ascona C)

Type - With 4 or 5 forward gears (all gears are equipped with synchronizers) and reverse gear. The gearbox is transversely mounted at the front of the vehicle

Designation

• Engine 1.3 l before 1982 - F10 (4-speed)
• Engine 1.3 l since 1983 — F10.4 (4-speed) or F10.5 (5-speed)
• 1.6 l and 1.8 l - F16 (4-speed), F16.4 (4-speed) or F16.5 (5-speed)

Gear ratios

(typical)	F10	F10.4W/5W	F16	F16.4W/5W	F16.5C
1 gear	3,64:1	3,55:1	3,55:1	3,42:1	3,42:1
2nd gear	2,21:1	1,96:1	2,16:1	1,95:1	2,16:1
3rd gear	1,43:1	1,30:1	1,37:1	1,28:1	1,48:1
4th gear	0,97:1	0,89:1	0,97:1	0,89:1	1,12:1
5th gear (where applicable)	-	0,71:1	-	0,71:1	0,89:1
Reverse gear	3,18:1	3,18:1	3,33:1	3,33:1	3,33:1
Main gear	4,18:1	4,29:1	3,74:1	3,74:1	3,94:1
Speedometer drive	2:1	2:1	2:1	2:1	2:1

Oil type/specification - Gear oil, viscosity SAE 80EP or GM gear oil 90 188 629 (Duckhams Hypoid 80 or Hypoid 75W/90S)

Gearbox housing capacity

• F10 and F10.4 - 1.7 l (approximately)
• F10.5 - 1.8 l (approx.)
• F16 and F16.4 - 2.0 l (approx.)
• F16.5 - 2.1 l (approx.)

Tightening torque (Nm)

• Flywheel housing to engine mounting bolts - 75
• End Cap Bolts - 22
• Gearshift Cover Bolts - 15

• End Cap Screw Cap (F10, F10.4, F16, F16.4) — 50
• End Cap Screw Cap (F10.5, F16.5) — 30

• Differential cover bolts - 30
• Main gear driven gear bolts - 85

• Fastening the exhaust system bracket to the gearbox housing - 60

Material published on the website [Opelbook.ru]

• Bolts for fastening the support bracket to the gearbox housing - 30
• Bolts for fastening the support bracket to the machine body - 40

• Reverse Light Switch - 20

• Screws (with a hole in the head) 5th gear fork pivot pin - 22
• Screws (with a hole in the head) 5th gear dogs - 9