Head bolts locations - 1994 Buick Century

Go to autozone.com and become a member of their web-site. It is FREE. You can then access repair info for your vehicle. There are repair manuals that show pictures and everything. I will look for your torque specs and picture.

Clean the cylinder head bolts, apply sealer to the threads, and hand-tighten.

Tighten the cylinder head bolts:

1. M11 cylinder head bolts first pass in sequence to 30 Nm (22 ft. lbs.).
2. M11 cylinder head bolts second pass in sequence + 90 degrees.
3. M11 cylinder head bolts (1,2,3,4,5,6,7,8) + 90 degrees
4. M11 cylinder head bolts (9 and 10) + 50 degrees
5. M8 cylinder head bolts (11,12,13,14,15) to 30 Nm (22 ft. lbs.). Begin with the center bolt (11) and alternating side-to-side, work outward tightening all of the bolts.
   NOTE The cylinder head gasket displacement can be verified by markings visible on the underside of the right gasket locating tab. Some 4.8/5.3L head gaskets may have 53 stamped onto the locating tab. Some 6.0L head gaskets may have 60 stamped onto the locating tab.

Here are the cylinder head torque specs for Chrysler Town And Country 3.3l:
You will find a tightening sequence in the cylinder head bolt location-tighten the head bolts 1 to 8 accordingly using the four-step torque turn method
Here are the steps:
1. Bolts 1 - 8 to 61 N•m (45 ft-lb)
2. Bolts 1 - 8 to 88 N•m (65 ft-lb)
3. Bolts 1 - 8 (again) to 88 N•m (65 ft-lb)
4. Bolts 1 - 8 turn an additional 1/4 Turn, this step does not require you to use a torque wrench
Remember, after 1/4 turn, the bolt torque should be over 122 N•m (90 ft-lb). Otherwise, buy new bolts. Once all that is done, tighten head bolt number 9 Cylinder Head Bolts Location and use Tightening Sequence to 33 N•m (25 ft-lb)

The head bolt torque on a 2002 Kia Optima is 45 ft/lbs of torque. Always make sure you use a good torque wrench to get it right. ------------------------------------------------------------------------------------
Original Launch X431 Master

Fig. 7: Location of the cylinder head retaining bolt holes

Fig. 13: Cylinder head bolt torque sequence for 2.2L engines

Tighten bolts in sequence, tighten the long bolts to 46 ft. lbs. (63 Nm) plue 90 degrees. Tighten the short bolts to 43 ft. lbs. (58 Nm) plue 90 degrees.

Hope helps.

Since you didn't say which engine you have, I've pulled torque specs for 3 different engines. Also, since I can't include a diagram showing the relative locations of the numbered head-bolt locations, it would be a good idea for you to purchase a vehicle specific repair guide that will show this info.

Take particular note about the TTY (Torque to Yield) bolts used on 2 of the 3 engines shown. It is said that new head bolts MUST BE USED when head is replaced or re-installed to obtain the proper torque.

B2500 4 Cylinder

Torque sequence: --------- ' 10 6 2 4 8 ' front ' ' ' 7 3 1 5 9 ' -----------Step 1: torque in sequence to 51 Ft/Lbs Step 2: torque again in sequence to 51 Ft/Lbs Step 3: final tighten all bolts an additional 90 to 100 degrees recheck final torque in sequence *** CAUTION ***engine uses Torque To Yield head bolts (TTY) that permanently stretch during the initial installation. New head bolts must be used when cylinder head is replaced or re-installed to obtain proper torque.

B3000 3.0 6 Cylinder

Torque sequence ---------- ' 6 4 2 8 ' ' ' ' 5 1 3 7 ' ---------- Step 1: torque to 59 Ft/Lbs Step 2: loosen in sequence (1) full turn Step 3: torque to 41 Ft/Lbs Step 4: torque to 73 Ft/Lbs

B4000 4.0 6 Cylinder

Torque sequence --------- ' 5 1 3 7 ' ' ' ' 6 4 2 8 ' --------- Step 1: torque cylinder head bolts in sequence to 26 Ft/Lbs Step 2: torque cylinder head bolts to 56 Ft/Lbs Step 3: turn cylinder head bolts in sequence an additional 90-degrees recheck final torque in sequence *** CAUTION ***engine uses Torque To Yield head bolts (TTY) that permanently stretch during the initial installation. New head bolts must be used when cylinder head is replaced or re-installed to obtain proper torque.

Good luck with this job!

The cylinder head gasket displacement can be verified by markings visible on the top side of the left gasket locating tab. Some 4.8/5.3L head gaskets may have 53 stamped onto the locating tab. Some 6.0L head gaskets may have 60 stamped onto the locating tab.

1. Install the alternator mounting bracket using the four bolts. Tighten the mounting bracket to the cylinder head bolts to 50 Nm (37 ft. lbs.).
2. Tighten the bolt at the rear of the power steering pump. Tighten the bolt to 50 Nm (37 ft. lbs.).

Hope helps.

Cylinder Head Removal & Installation 3.1L Engine To Remove:
NOTE: With some minor variations, this procedure can be used on both the left and right cylinder heads.

1. Raise and safely support the vehicle.
2. Drain the engine coolant and the engine oil. Lower the vehicle.
3. Remove the upper and lower intake manifolds.
4. Remove the rocker arms and pushrods.
5. Remove the exhaust crossover pipe.
6. Remove the engine mount strut bracket.
7. If removing the left side (front) head, remove the dipstick tube.
8. Tag for identification, then remove the spark plug wires.
9. Remove the spark plugs.
10. Remove the exhaust manifold using the procedures found in this section.
11. Remove the eight cylinder head bolts, then remove the cylinder head. There are locator pins that align the head to the block. Pull upwards on the head to disengage the pins, then remove the cylinder head to a suitable work area.
12. If the head is be overhauled, remove any remaining components such as the engine lift hook, the fuel line bracket bolts, the engine coolant temperature sensor, etc., as required.

Position a new gasket, install the head, then tighten the bolts in the sequence shown (3.1L engine shown)

To Install:
NOTE: If the head gasket failed, determine the cause. Gasket failure is caused by the following conditions: improper installation; overheating due to a failure in the electric cooling fan system or a leak in the cooling system; loose or warped cylinder head; missing, off location or not fully seated locator dowel pins; low torque on the cylinder head bolts; warped block surface; scratched or gouged gasket surfaces; excessive intake manifold torque and even cracked engine block tapped holes.

1. Clean all parts well. Remove all foreign material to the bare metal. Do not use a motorized wire brush on any gasket sealing surface. It is good practice to use the proper size thread-cutting tap to clean the threaded bolt holes in the block. This helps assure an accurate torque reading.
2. Place a new head gasket on the clean engine block deck surface. Many gaskets will have some sort of marking denoting TOP or THIS SIDE UP. Make sure the gasket sits flat and is not hung up on the locator dowel pins. Use no sealer on the head gasket.
3. Carefully set the cylinder head in place, using care not to damage the gasket. Make certain that the head engages the locator dowel pins that properly position the head.
4. The bolts should be very clean since dirt built-up on the bolt threads makes it difficult to get an accurate torque reading. These are 'torque to yield' bolts which stretch a small amount when tightened; new bolts are always recommended. On a used vehicle, especially a high-mileage vehicle, it may be difficult to determine if the heads have been removed before and how many cycles the bolts have been removed and tightened. New bolts should be part of any cylinder head service. Use GM Sealer #1052080, or equivalent, on the threads of the head bolts and install all eight bolts, finger-tight.
5. With an accurate torque wrench, tighten the bolts gradually, in sequence, working from the center outwards. Final torque should be 33 ft. lbs. (45 Nm), plus an additional 90 degrees (1/4-turn). A torque angle meter is recommended.
6. Install the remaining components in the reverse order of the removal process.

The Head bolts are located below the cams, so you have to take the cams out to get to the bolts.
The torque specs for the head bolts in sequence is 20, 40, then end at 63ft lbs. Be sure to apply anti sieze or dip the head bolts in oil, before you torque them down or you might pull out the threads. (Not a good thing TRUST ME!)
Hope this helps.

Tighten the cylinder head bolts 1 - 8 in the sequence shown in Cylinder Head Bolts Location and Tightening Sequence Using the 4 step torque turn method, tighten according to the following values:
Step 1: Bolts 1 - 8 to 61 N·m (45 ft. lbs.)
Step 2: Bolts 1 - 8 to 88 N·m (65 ft. lbs.)
Step 3: Bolts 1 - 8 (again) to 88 N·m (65 ft. lbs.)
Step 4: Bolts 1 - 8 turn an additional 1/4 Turn. (Do not use a torque wrench for this step.)
NOTE: Bolt torque after 1/4 turn should be over 122 N·m (90 ft. lbs.) If not, replace the bolt.

Tighten head bolt number 9 Cylinder Head Bolts Location and Tightening Sequence to 33 N·m (25 ft. lbs.) after head bolts 1 - 8 have been tighten to specifications.

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