315 with gasoline straight-4 1.6 L 74 HP engine (1982.9–1991.12)
140.14 lbf⋅ft140.14 lbf⋅ft190 N⋅m
Replace nut.
316 i with gasoline straight-4 1.6 L 101 HP engine (1988.7–1991.6)
228.64 lbf⋅ft228.64 lbf⋅ft310 N⋅m
Replace bolt.
316 i with gasoline straight-4 1.6 L 98 HP engine (1987.9–1991.6)
228.64 lbf⋅ft228.64 lbf⋅ft310 N⋅m
Replace bolt.
318 i with gasoline straight-4 1.8 L 111 HP engine (1987.9–1991.6)
228.64 lbf⋅ft228.64 lbf⋅ft310 N⋅m
Replace bolt.
318 i with gasoline straight-4 1.8 L 114 HP engine (1987.9–1991.6)
228.64 lbf⋅ft228.64 lbf⋅ft310 N⋅m
Replace bolt.
318 is with gasoline straight-4 1.8 L 134 HP engine (1989.9–1991.8)
243.4 lbf⋅ft243.4 lbf⋅ft330 N⋅m
Replace bolt.
expand_moreAll other modifications
M18 × 1,5 screws
302.4 lbf⋅ft302.4 lbf⋅ft410 N⋅m
Use new screw.
expand_moreCrankshaft pulley
M8
16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Drive plate
88.51 lbf⋅ft88.51 lbf⋅ft120 N⋅m
Flywheel
77.44 lbf⋅ft77.44 lbf⋅ft105 N⋅m
Replace screws.
expand_moreVibration damper
M8
16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
expand_moreEngine control
expand_moreCamshaft timing gear
M10
47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m
expand_moreChain tensioner locking screws
expand_more318 is with gasoline straight-4 1.8 L 134 HP engine (1989.9–1991.8)
M22 × 1,5 screws
29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
expand_moreTiming case cover
expand_more318 is with gasoline straight-4 1.8 L 134 HP engine (1989.9–1991.8)
M10
34.67 lbf⋅ft34.67 lbf⋅ft47 N⋅m
M7
11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
M8
16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
expand_moreEngine lubrication
expand_moreOil drain plug
M12 × 1,5 screws
18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
expand_moreExhaust system
expand_moreExhaust manifold
M6
7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Replace nuts.
M7
11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Replace nuts.
M8
16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
Replace nuts.
Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 1991 BMW 3 Series Sedan 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 BMW warranty policy for your region. In some regions DIY service may invalidate your warranty.
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 BMW 3 Series Sedan 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 BMW 3 Series Sedan you're not only saving money, but also also improving your technical skills and learning something new.
1991 BMW 3 Series Sedan generations
In 1991 BMW offered 2 generations of the 3 Series Sedan. Engine fastener tightening specifications may vary in different generations. Be sure that you are looking at the rigt modification.