1992 BMW Cylinder head

Over torqued and you run the risk of a stripped thread or broken head bolt. Under torqued and the compression gas will leak past the head gasket and burn it out.

Try this chart for your information.
http://www.championbrands.com/aera-torquespecs.pdf

Need the torque settings for a nissan np200 8valve silinder head

Hi thanks for your question' The electronic EGR valve and solenoid assembly is attached to the rear of the left cylinder head ,

1. Remove electrical connector (5) at top of EGR valve solenoid.
2. Remove tube mounting bolt (1) at intake manifold.

1. Remove two bolts (4) connecting EGR tube (1) to valve assembly.
2. Remove gasket located between EGR tube flange and EGR valve assembly.
3. Remove two EGR valve mounting bolts (5).
4. Separate valve assembly (3) from engine.
5. Remove and discard metal gasket located between cylinder head and valve assembly.

INSTALLATION

1. Clean area at rear of left cylinder head where it joins base of EGR valve.
2. Clean EGR tube where it joins EGR valve.
3. Position new gasket between EGR valve and cylinder head.
4. Position EGR valve to cylinder head. Install and tighten two bolts (5). Refer to Torque Specifications.
5. Position new gasket between EGR tube flange and EGR valve assembly.
6. Position EGR tube (1) to side of EGR valve and into intake manifold.
   1. Install EGR tube flange bolt (1) at intake manifold. Tighten bolt. Refer to Torque Specifications.
   2. Connect electrical connector (5) to top of EGR valve solenoid (2).Do a final tightening of two EGR tube bolts (4). Refer to Torque Specifications

Hi dear40,

The m43 engine should be similar to both the m42 and m44. The cylinder head torque settings are 22ft/lb and 90degree torque angle, and another 90 degree torque angle. Make sure to wait approximately 10minutes before performing the 2nd torque angle.

Yes its very possible possible that valve damage may have occured when the belt failed.I would suggest that you reinstall a new belt and attempt to crank the engine.Theres a chance it that it did not bend any valves.If it does not crank then cylinder head will have to be removed for the repair.

BMW ignition lock replacing.

According to manual no special tools needed. here procedure!

1. Ignition elec switch. Disconnect battery. 2. remove trimpanel from lower leftside of instrument panel. remove screw retaining lower steering column and remove cove. 3. remove slotted screws on both side of switch. 4. relase tabs and remove switch from elec harnass and remove sealer.. note: before mating new ignition elec switch check that switch is in correct position. seal screws again.
2. Ignition lock cylinder replacing. 1. insert master key and turn 60 deg to radio position. 2. inset piece of stiff wire into opening in lock cylinder and pull cylinder out. (Note early models up to 10/95 turn lock cylinder back 12 deg to release)

Tightening torques

Do not reuse the bolts as they may be stretched.

Cylinder head to engine block
Stage 1: 32Ft-lbs
Stage 2: +90degrees
Stage 3: +90degrees

Cylinder head to lower timing
chain cover: 89in-lbs

BMW cylinder torque setting all models

According to my service manual as follows.

Cyl head to engine block (torx e12 M10 bolts)

Stage 1 30nm (22 ft – lb)
Stage 2 + 90 degrees
Stage 3 + 90 degrees

Cyl head to lower timing chain cover 10nm (89in – lb)

The tightening sequence is from inside to outside crossover as normal. Loosening sequence is from outside to inside crossover. Remember to set torque wrench at low setting and work gradually up through the whole sequence until you get the desired torque.