What lbs do I tighten the head bolts to on my 1990 Honda prelude SI 2.1L DOHC and in what order do I tighten them?

Quote:





Originally Posted by norvelplagbao52

1993 saturn sl2 1.9 dohc cylinder head torque
specs and sequence
Cylinder head bolt
tightening procedure:
CYLINDER HEAD BOLT TIGHTENING SEQUENCE:

INTAKE
SIDE
8 4 1 5 9

7 3 2 6 10
EXHAUST SIDE

In sequence,
torque the cylinder head bolts. Torque: 30 Nm (22 ft-lbs).
In sequence,
torque all bolts. Torque: 50 Nm (37 ft-lbs)
In sequence, turn each bolt an
additional 90 degrees.





Originally Posted by norvelplagbao52

1993 saturn sl2 1.9 dohc cylinder head torque
specs and sequence
Cylinder head bolt
tightening procedure:
CYLINDER HEAD BOLT TIGHTENING SEQUENCE:

INTAKE
SIDE
8 4 1 5 9

7 3 2 6 10
EXHAUST SIDE

In sequence,
torque the cylinder head bolts. Torque: 30 Nm (22 ft-lbs).
In sequence,
torque all bolts. Torque: 50 Nm (37 ft-lbs)
In sequence, turn each bolt an
additional 90 degrees.

1998 Isuzu Truck Rodeo 2WD 2.2L MFI DOHC 4cyl

The Head Bolt Torque

Torque sequence ----------------- front ' 7 3 1 5 9 ' of ' ' engine ' 8 4 2 6 10 ' ----------------- Step 1: torque bolts in sequence to 18 Ft/Lbs Step 2: turn bolts in sequence an additional 90-degrees Step 3: turn bolts in sequence an additional 90-degrees Step 4: turn bolts in sequence an additional 90-degrees recheck final torque in sequence

1998 Isuzu Truck Rodeo 2WD 3.2L MFI DOHC 6cyl

The Head Bolt Torque

Torque sequence -------------- front ' 6 1 3 7 ' of ' ' engine ' 5 2 4 8 ' -------------- Step 1: torque to 20 Ft/Lbs Step 2: torque to 47 Ft/Lbs recheck final torque in sequence

Hi there:Removal and InstallationExcept Accord V-6

The cylinder head temperature must be below 100 degrees F (38 degrees C); allow the engine to cool several hours if the car has been recently driven. Turn the crankshaft pulley so that the number one piston is at Top Dead Center (TDC) of the compression stroke.

1. Disconnect the battery ground cable.
2. Drain the cooling system.
3. Remove the air cleaner and intake duct assembly.
4. Label and remove the brake booster, PCV and charcoal canister vacuum hoses from the intake manifold.
5. Remove the engine ground cable from the cylinder head or valve cover.
6. Relieve the fuel pressure using the proper procedure. Disconnect the fuel lines.
7. Disconnect the accelerator cable at the throttle body or carburetor. On automatic transaxle vehicles, also disconnect the throttle control cable.
8. Disconnect and tag all the wire harnesses and vacuum hoses from the cylinder head, intake manifold and throttle body/carburetor. Disconnect the spark plug wires, then position them aside.
9. Disconnect the upper radiator hose. Remove the heater hoses from the cylinder head.
10. If equipped, remove the cruise control actuator. Do not disconnect the cable; move the actuator out of the work area with the cable attached.
11. Remove accessory drive belts.
12. Disconnect the inlet hose from the power steering pump and plug the hose immediately to prevent fluid leakage. Remove the power steering pump from the cylinder head and position it aside.

When the power steering hose is disconnected, the fluid will flow out. Cover the alternator with a shop towel to prevent the fluid from leaking into it.

1. If the alternator is mounted to the cylinder head, remove it.
2. Remove the power steering and alternator brackets if they are mounted on the cylinder head.
3. Remove the distributor. Be sure to scribe a line relating the position of the distributor to the engine for easy installation.
4. If equipped, remove the cylinder sensor next to the distributor.
5. Remove the valve cover.
6. Remove the timing belt.

Do not crimp or bend the timing belt.

1. Remove the exhaust header pipe nuts and the header pipe bracket (if equipped). Pull the pipe away from the exhaust manifold.
2. If equipped, remove the EGR crossover and air suction pipes.
3. On Accords through 1989 and Preludes through 1991, the cylinder head can be removed with the intake and exhaust manifolds either still attached or removed. On other models, the manifolds should be removed first.
4. On some engines, it will be necessary to remove the camshaft holders, camshafts and rocker arms to access the cylinder head bolts. If so, refer to the proper procedures in this section.
5. Remove the cylinder head bolts in sequence (take notice of any bolt holes occupied by longer bolts). Failure to follow this procedure may cause the head to warp.
   1. On 1984-89 Accords and 1984-91 Preludes, work from the ends toward the center. Loosen each bolt about 1 / 2 turn each time and make several passes to release the tension evenly.
   2. On 1990-95 Accords and 1992-95 Preludes, follow the loosening sequence shown in the illustrations. Loosen each bolt about 1/3 turn each time. Repeat the sequence until all bolts are loosened.
   
   

Fig. 1: Bolt loosening sequence on 1990-93 Accords and 1992-95 Preludes with 2.2L engines

24. Remove the cylinder head. The head may resist removal, even with the bolts out. Tap the edge of the head with a plastic or rubber mallet; lift the head straight up to remove it.

1. Remove the cylinder head gasket and clean the mating surfaces.

1. If applicable, remove the intake and exhaust manifolds from the cylinder head.

To install:

1. Install a new head gasket on the engine, making certain it is positioned correctly. The cylinder head dowel pins and the oil jet must be in place. Refer to the illustrations if necessary.
2. Install the head. Lower it straight down onto the block, aligning it correctly.
3. Apply clean engine oil to the bolt threads and the contact face of the bolt head. Install the head bolts finger-tight.
4. On all models except 1988-89 DOHC Prelude and 1992-95 Preludes with 2.3L and VTEC engines, tighten the head bolts following sequence A. On 1988-89 DOHC Preludes, use sequence B. Use sequence C on 1992-95 Preludes with 2.3L and VTEC engines.
   1. On 1984-89 Accords and 1984-91 Preludes, tighten the bolts in two passes. The first pass should bring the bolts to about 22 ft. lbs. (30 Nm). On the second pass, tighten the bolts to their final torque of 49 ft. lbs. (68 Nm).
   2. On 1990-93 Accords, tighten the bolts to 29 ft. lbs. (40 Nm) on the first pass, 51 ft. lbs. (70 Nm) on the second pass, then tighten the bolts to their final torque of 78 ft. lbs. (108 Nm).
   3. On 1994-95 Accords and 1992-95 Preludes, the bolts are also tightened in three passes. Tighten the bolts to 29 ft. lbs. (40 Nm) on the first pass, 51 ft. lbs. (70 Nm) on the second pass, then tighten the bolts to their final torque of 72 ft. lbs. (100 Nm).
   .
   

Fig. Cylinder head bolt torque sequence B


Fig. Cylinder head bolt torque sequence B


Fig. Cylinder head bolt torque sequence C

1. If applicable, assemble the intake and exhaust manifolds to the head. Use new gaskets.
   
2. If applicable, install the cam, rockers and camshaft holders.
3. If equipped, install the EGR crossover and air suction pipes.
4. Connect the exhaust pipe to the manifold using new nuts.
5. Install the timing belt.
6. Install the valve cover.
7. Install the cylinder sensor (if equipped) and the distributor.
8. If applicable, install the alternator.
9. Install the power steering pump, then connect the inlet hose to the pump.
10. Install the accessory drive belts. Adjust the belt tensions.
11. Install the heater hoses.
12. Install the cruise control actuator if it was removed.
13. Connect the spark plug wires. Connect all the wire harnesses and vacuum hoses to the cylinder head, intake manifold and throttle body/carburetor.
14. Connect the throttle control cable and/or accelerator cable at the throttle body.
15. Connect the fuel lines.
16. Install the brake booster, PCV and charcoal canister vacuum hoses.
17. Install the air cleaner and intake duct.
18. Refill the engine coolant. It is recommended that the engine oil be changed whenever a cylinder head is removed.
19. Connect the negative battery cable.
20. Start the engine, allowing it to idle. Bleed the cooling system. Check the work area carefully for any signs of fluid leakage or any indication of the timing belt rubbing or slapping the covers

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.
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Thanks for using FixYa.

To install:

1. Install a new head gasket on the engine, making certain it is positioned correctly. The cylinder head dowel pins and the oil jet must be in place. Refer to the illustrations if necessary.
2. Install the head. Lower it straight down onto the block, aligning it correctly.
3. Apply clean engine oil to the bolt threads and the contact face of the bolt head. Install the head bolts finger-tight.
4. On all models except 1988-89 DOHC Prelude and 1992-95 Preludes with 2.3L and VTEC engines, tighten the head bolts following sequence A. On 1988-89 DOHC Preludes, use sequence B. Use sequence C on 1992-95 Preludes with 2.3L and VTEC engines.
   1. On 1984-89 Accords and 1984-91 Preludes, tighten the bolts in two passes. The first pass should bring the bolts to about 22 ft. lbs. (30 Nm). On the second pass, tighten the bolts to their final torque of 49 ft. lbs. (68 Nm).
   2. On 1990-93 Accords, tighten the bolts to 29 ft. lbs. (40 Nm) on the first pass, 51 ft. lbs. (70 Nm) on the second pass, then tighten the bolts to their final torque of 78 ft. lbs. (108 Nm).
   3. On 1994-95 Accords and 1992-95 Preludes, the bolts are also tightened in three passes. Tighten the bolts to 29 ft. lbs. (40 Nm) on the first pass, 51 ft. lbs. (70 Nm) on the second pass, then tighten the bolts to their final torque of 72 ft. lbs. (100 Nm).
      
      

      Fig. Fig. 9: Cylinder head bolt torque sequence A
      
      
      
      

      Fig. Fig. 10: Cylinder head bolt torque sequence B
      
      
      

      Fig. Fig. 11: Cylinder head bolt torque sequence C
      

   
   
5. If applicable, assemble the intake and exhaust manifolds to the head. Use new gaskets.
6. If applicable, install the cam, rockers and camshaft holders.
7. If equipped, install the EGR crossover and air suction pipes.
8. Connect the exhaust pipe to the manifold using new nuts.
9. Install the timing belt.
10. Install the valve cover.
11. Install the cylinder sensor (if equipped) and the distributor.
12. If applicable, install the alternator.
13. Install the power steering pump, then connect the inlet hose to the pump.
14. Install the accessory drive belts. Adjust the belt tensions.
15. Install the heater hoses.
16. Install the cruise control actuator if it was removed.
17. Connect the spark plug wires. Connect all the wire harnesses and vacuum hoses to the cylinder head, intake manifold and throttle body/carburetor.
18. Connect the throttle control cable and/or accelerator cable at the throttle body.
19. Connect the fuel lines.
20. Install the brake booster, PCV and charcoal canister vacuum hoses.
21. Install the air cleaner and intake duct.
22. Refill the engine coolant. It is recommended that the engine oil be changed whenever a cylinder head is removed.
23. Connect the negative battery cable.
24. Start the engine, allowing it to idle. Bleed the cooling system. Check the work area carefully for any signs of fluid leakage or any indication of the timing belt rubbing or slapping the covers.

sorry dont have a diagram here is a how to

1. Disconnect the negative battery cable. If equipped with an air bag, properly disable the Supplemental Restraint System (SRS), as detailed in Chassis Electrical .
2. Elevate and safely support the front of the car.
3. Remove the wheel.
4. Loosen the nut at the rear of the radius rod. Remove the nut, washers, bushing, etc. Keep them in the correct order for reinstallation.
5. Remove the bolts securing the rod to the control arm. Remove the rod.

To install:

1. Inspect the bushings carefully for wear or deformation. Replace them if any damage is found.
2. Fit the rod into place and install the bolts at the control arm. Tighten the bolts to 40 ft. lbs. (55 Nm) on Accords through 1989 and Preludes through 1991. On 1990-95 Accords and 1992-95 Preludes, tighten the bolts to 76 ft. lbs. (105 Nm).
3. Install the bushings, washers and spacers on the rod. Install a new locking nut. On all except 1992-95 Preludes, tighten the end nut to 33 ft. lbs. (44 Nm). On 1992-95 Preludes, tighten the nut to 40 ft. lbs. (55 Nm).
4. Install the wheels and lower the vehicle.
5. Properly enable the SRS system, if equipped, and connect the negative battery cable.

Start from middle of head criss crossing outward. !st step 22ft/lbs and second step 49 ft/lbs.

Here is a picture of the torque procedure.
Bolt #11 threads must be coated with loctite 592 sealant before installation

Tighten all bolts in order to 22 Ft/Lbs.
Tighten all bolts in order to 45 Ft/Lbs
ReTighten all bolts in order to 45 Ft/Lbs
Tighten bolts 1-10 in order to 110 Ft/Lbs
Tighten bolt 11 to 100 Ft/Lbs
Tighten bolts 12-14 to 110 Ft/Lbs

mcdevito75 here, your local parts store can give you the specs.

49lbs I believe but it should tell you in the manual or goto a Kragen store and just flip thru a Haydem or Chilton repair book real quick.

go to the link if u can't see diagram below. there are 2 engines in this year 1st diagram is 1958cc SOHC
http://autorepair.about.com/library/firing_orders/bl-fo-9975.htm