1991 Audi 80 engine fastener tightening specifications

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Condition	Value

expand_moreAir intake system

expand_moreIntake manifold


All Audi gasoline straight-4 2.0 L 6A engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All Audi gasoline straight-4 1.8 L DZ engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All Audi gasoline straight-4 1.6 L PP engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All other modifications	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAuxiliary assemblies

expand_moreAuxiliary drive belt tensioner

expand_moreAll Audi gasoline straight-4 2.0 L 6A engines


Screws	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m


All Audi gasoline straight-4 2.0 L AAD engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAlternator

expand_moreAll Audi gasoline straight-4 2.0 L 6A engines


Screws	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m

expand_moreAll Audi gasoline straight-4 2.0 L AAD engines

expand_moreClamping screws


Tensioning screws	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreRetaining clamp


Screws	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreScrews


Bottom	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m

expand_moreServo pump pulley


2.0 E 16V with gasoline straight-4 2.0 L 135 HP engine (1990.3–1991.9)	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreServo steering pump

expand_more2.0 with gasoline straight-4 2.0 L 110 HP, 157 N⋅m engine (1990.10–1991.8)


Tensioning screws	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreCarburetion


Injection nozzle (injector)	51.63 lbf⋅ft51.63 lbf⋅ft70 N⋅m

expand_moreCylinder head

expand_moreCamshaft bearing


All Audi gasoline straight-4 2.0 L 6A engines	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
All other modifications	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m


Valve cover	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreEngine block

expand_moreConnecting rod bearing

expand_moreAll other modifications


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Second stage	90°90°90°

expand_moreCrankshaft central screws

expand_moreAll Audi diesel straight-4 1.9 L 1Y engines


First stage	66.38 lbf⋅ft66.38 lbf⋅ft90 N⋅m
Second stage	90°90°90°

expand_moreAll Audi gasoline straight-4 1.8 L DZ engines


First stage	66.38 lbf⋅ft66.38 lbf⋅ft90 N⋅m
Second stage	90°90°90°

expand_moreAll Audi gasoline straight-4 1.6 L PP engines


First stage	66.38 lbf⋅ft66.38 lbf⋅ft90 N⋅m
Second stage	90°90°90°


All Audi diesel straight-4 1.6 L RA engines	132.76 lbf⋅ft132.76 lbf⋅ft180 N⋅m
All Audi diesel straight-4 1.6 L SB engines	132.76 lbf⋅ft132.76 lbf⋅ft180 N⋅m

expand_moreAll other modifications


First stage	66.38 lbf⋅ft66.38 lbf⋅ft90 N⋅m
Second stage	180°180°180°

expand_moreCrankshaft pulley


All Audi diesel straight-4 1.9 L 1Y engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAll Audi gasoline straight-4 2.0 L AAD engines

expand_moreClass 10.9


M8	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m

expand_moreClass 8.8 screws


M8	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m


All other modifications	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreFlywheel

expand_moreAll Audi diesel straight-4 1.9 L 1Y engines


First stage	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Replace the coated screws
Second stage	90°90°90°

expand_moreAll Audi gasoline straight-4 2.0 L 6A engines


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Second stage	90°90°90°

expand_moreAll Audi gasoline straight-4 1.8 L DZ engines


First stage	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Second stage	90°90°90°

expand_moreAll Audi gasoline straight-4 1.6 L PP engines


First stage	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Second stage	90°90°90°


All other modifications	73.76 lbf⋅ft73.76 lbf⋅ft100 N⋅m
Use screw-locking compound.

expand_moreMain bearing


All Audi gasoline straight-4 2.0 L 6A engines	65°65°65°
All other modifications	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m

expand_moreVibration damper


Class 10.9	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
Class 8.8 screws	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreEngine control

expand_moreCamshaft timing gear


All Audi gasoline straight-4 1.8 L DZ engines	59 lbf⋅ft59 lbf⋅ft80 N⋅m
All Audi gasoline straight-4 1.6 L PP engines	59 lbf⋅ft59 lbf⋅ft80 N⋅m
All other modifications	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

expand_moreDrive belt tensioner device


Screws	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreToothed belt guard at the bottom

expand_moreAll Audi gasoline straight-4 2.0 L 6A engines


Nuts	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Screws	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreAll Audi gasoline straight-4 2.0 L AAD engines


M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
M8	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Nuts	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreAll Audi gasoline straight-4 1.6 L ABB engines


M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
M8	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreAll Audi gasoline straight-4 1.6 L PP engines


M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreAll Audi gasoline straight-4 1.6 L RN engines


M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreAll other modifications

expand_moreScrews (M6)


Bottom	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreMetal cap at the top


Screws	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m


Nuts	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_morePlastic cap on the top


Screws	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreToothed belt guard at the top

expand_more2.0 E 16V with gasoline straight-4 2.0 L 135 HP engine (1990.3–1991.9)


Screws	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreToothed belt tensioning roller

expand_moreAll Audi gasoline straight-4 2.0 L 6A engines

expand_moreM10


Nuts	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

expand_moreM8


Nuts	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAll other modifications


Nuts	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

expand_moreEngine lubrication


Oil drain plug	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m

expand_moreOil sump


All Audi diesel straight-4 1.9 L 1Y engines	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
All Audi gasoline straight-4 1.8 L DZ engines	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
All Audi gasoline straight-4 1.6 L PP engines	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
All other modifications	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreEngine management


Glow plugs	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Lambda sensor	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m

expand_moreEngine mounting

expand_moreTorque arm

expand_more2.0 E 16V with gasoline straight-4 2.0 L 135 HP engine (1990.3–1991.9)

expand_moreAir-conditioning compressor


At the bracket	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m

expand_moreAt the crossmember


Front	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m

expand_moreExhaust system

expand_moreExhaust manifold


All Audi gasoline straight-4 2.0 L AAD engines	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
All Audi gasoline straight-4 1.8 L JN engines	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
All Audi gasoline straight-4 1.8 L NE engines	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
All Audi gasoline straight-4 1.8 L PM engines	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
All other modifications	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreIgnition system

expand_moreSpark plugs


All Audi gasoline straight-4 1.8 L DZ engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Audi gasoline straight-4 1.6 L PP engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All other modifications	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 1991 Audi 80 user's manual. Keep in mind that all information here is provided “as is” without any warranty of any kind.

Before doing any DIY service please check your insurance policy and Audi warranty policy for your region. In some regions DIY service may invalidate your warranty.

Maintenance Items

Engine Fastener Tightening Specifications
Front Suspension Fastener Tightening Specifications
Rear Suspension Fastener Tightening Specifications
Transmission Fastener Tightening Specifications

Service Intervals

Conquer your fears and never give up!

DIY car service is not as difficult as it looks like and it might save you thousands of dollars per year. It might be even fun and a good thing to do with your kids on a weekend to teach them how basic machinery works. It's really hard to screw something up and damage your car permanently if you use right tools, follow Audi 80 service manual and use right parts and fluids in prescribed amounts. Even modern cars stuffed with electronics can be serviced in your garage or even in your driveway. Changing engine oil, brake fluid, ATF, replacing brake pads, and etc. It's all may be done by yourself in a mater of a couple of hours.

Doing basic service for your 1991 Audi 80 you're not only saving money, but also also improving your technical skills and learning something new.

1991 Audi 80 generations

In 1991 Audi offered 2 generations of the 80. Engine fastener tightening specifications may vary in different generations. Be sure that you are looking at the rigt modification.

B4

Type 8C

1991 Audi 80 B3 Engine Fastener Tightening Specifications

Table of Contents

Conquer your fears and never give up!

1991 Audi 80 generations

B4

Audi 80 B3 model years

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