Question about 1990 Jeep Wrangler

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I HAVE 1990 JEEP WRANGLER 2.5L 4 CYL THE MANUAL SAYS WHEN INSTALLING HEAD BOLTS, ONLY PUT LOCTITE ON THREADS ON #8 BOLT. IS THIS CORRECT?? NO LOCTITE ON THE REST OF THE BOLTS? THANKS,

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  • spoof4239 Jun 28, 2009

    O.K.

    THANKS

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It don't really matter if you put loctite or not. I believe these nonesense are just a way to market a product by recommending putting loctite on bolts. A single threaded bolt can produce as much as 40,000 pounds of pressure. Ones tightened to specification, they aint gonna come loose. Expert recomended this, and that are all nonsense. I replace so many heads, one of them belong to a freind of mine it has been 8 years, and his car still runs the same as the day I put that head. No loctite just bolts tightened to specs. In fact these things really don't help much if they even help at all.

Posted on Jun 28, 2009

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The manual will be always right yes it right do according to the manual

Posted on Jun 28, 2009

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Dear expert What are the cylinder head bolt torque settings for the 4.0L MFI straight 6 engine? Regards Dave


Here are the specs and sequence:

0900c152800a9943.gif

Install the cylinder head and bolts. The threads of bolt No. 11 must be coated with Loctite® 592 sealant before installation. Tighten the bolts in 3 steps, using the correct sequence:

  1. Tighten all bolts to 22 ft. lbs. (30 Nm).
  2. Tighten all bolts to 45 ft. lbs. (61 Nm).
  3. Retighten all bolts to 45 ft. lbs. (61 Nm).
  4. Tighten bolts 1 through 10 in sequence to 110 ft. lbs. (150 Nm).
  5. Tighten bolt 11 to 100 ft. lbs. (136 Nm)
  6. Tighten bolts 12 through 14 to 110 ft. lbs. (150 Nm)

May 04, 2011 | 1996 Jeep Grand Cherokee

1 Answer

I am looking for the head bolt torque specifications and sequence for a 1988 jeep Cherokee 4.0 i6


zjlimited_950.jpg

Fig. 17: Cylinder head bolt torque sequence (click over pic for zoom)


Apply sealing compound only to the cylinder head gasket. Do not allow sealing compound to enter the cylinder bore.

Install the cylinder head and bolts. The threads of bolt No. 11 must be coated with Loctite® 592 sealant before installation. Tighten the bolts in 3 steps, using the correct sequence:

Tighten all bolts to 22 ft. lbs. (30 Nm).
Tighten all bolts to 45 ft. lbs. (61 Nm).
Retighten all bolts to 45 ft. lbs. (61 Nm).
Tighten bolts 1 through 10 in sequence to 110 ft. lbs. (150 Nm).
Tighten bolt 11 to 100 ft. lbs. (136 Nm)
Tighten bolts 12 through 14 to 110 ft. lbs. (150 Nm)




Hope this helps (remember to rate and comment this answer).

Mar 30, 2011 | Jeep Cherokee Cars & Trucks

1 Answer

What is the head bolt toqure sequence for a 1990 jeep cherokee 4.0 I6 and the torque specs for the head bolts


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


chuckster57_4.gif

Dec 28, 2010 | 1998 Jeep Cherokee

1 Answer

Need to know lbs of torque and sequence for the heads on a 1995 jeep wrangler with a 2.5


From autozone.com:
To install:

  1. Thoroughly clean the gasket mating surfaces. Remove all traces of old gasket material. Remove all carbon deposits from the combustion chambers. Lay a straightedge across the head and check for flatness. Total deviation should not exceed 0.001 in. (0.025mm).

The cylinder head gasket used on the 2.5L engine is a composition gasket. The gasket is to be installed dry. Do not use gasket sealing compound on the gasket.
  1. Fabricate 2 cylinder head alignment dowels from 2 used cylinder head bolts. Cut the head of the longest bolt off below the hex head. Then cut a slot in the top of the dowel to allow easier removal with a screwdriver.
  2. Install one dowel in bolt hole No. 10 and the other dowel in bolt hole No. 8.
  3. Place the cylinder head gasket over the dowels with the numbers facing up.
  4. Place the cylinder head over the dowels.
  5. Coat the threads of bolt No. 7 only, with Loctite PST sealant or equivalent.
  6. Install all head bolts except Nos. 8 and 10.
  7. Tighten the bolts in the sequence shown in the illustration to the following:
    1. Tighten bolts 1 through 10 in sequence to 22 ft. lbs. (30 Nm).
    2. Tighten bolts 1 through 10 in sequence to 45 ft. lbs. (61 Nm).
    3. Recheck bolts 1 through 10 in sequence to verify that they are 45 ft. lbs. (61 Nm).
    4. Tighten bolts 1 through 6 in sequence to 110 ft. lbs. (149 Nm).
    5. Tighten bolt 7 to 100 ft. lbs. (136 Nm).
    6. Tighten bolts 8 through 10 to 110 ft. lbs. (149 Nm).


During the final tightening sequence, bolt No. 7 will be tightened to a lower torque than the rest of the bolts. Do not overtighten bolt No. 7.
  1. Connect the temperature sending unit wire.
  2. Install the spark plugs.
  3. Install the compressor.
  4. Install the compressor/alternator bracket mounting bolt.
  5. Adjust the alternator drive belt.
  6. Install the air conditioning compressor drive belt.
  7. Install the intake and exhaust manifolds.
  8. Install the power steering pump bracket.
  9. Install the pushrods. Keep them in order!
  10. Install the rocker arms. Keep them in order!
  11. Thoroughly clean the mating surfaces of the head and rocker cover and install as outlined earlier in this section.
  12. Install the air cleaner.
  13. Connect the hoses at the thermostat housing.
  14. Connect the battery ground.
  15. Fill the cooling system.
  16. 1a34825.gif

Sep 23, 2010 | Jeep Wrangler Cars & Trucks

1 Answer

Whats the tourqe on head bolts 1990 4 cylinder


1990–95 VEHICLES
  1. Disconnect the battery ground.
  2. Drain the cooling system. CAUTION
    When draining the coolant, keep in mind that cats and dogs are attracted by ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old.
  3. Disconnect the hoses at the thermostat housing.
  4. Remove the air cleaner.
  5. Remove the rocker arm cover as outlined earlier in this section.
  6. Remove the rocker arms. Keep them in order!
  7. Remove the pushrods. Keep them in order!
  8. Remove the power steering pump bracket.
  9. Suspend the pump out of the way.
  10. Remove the intake and exhaust manifolds.
  11. Remove the air conditioning compressor drive belt.
  12. Loosen the alternator drive belt.
  13. Remove the compressor/alternator bracket mounting bolt.
  14. Unbolt the compressor and suspend it out of the way. DO NOT DISCONNECT THE REFRIGERANT LINES!
  15. Remove the spark plugs.
  16. Disconnect the temperature sending unit wire. Fig. 6: Disconnect the coolant hoses at the thermostat housing 85353100.jpg
    Fig. 7: Disconnect the coolant hoses at the thermostat housing 85353101.jpg
    Fig. 8: Remove the cylinder head–to–block bolts 85353102.jpg
    Fig. 9: Cylinder head bolt removed from the head 85353103.jpg
    Fig. 10: Removing the cylinder head from the engine block 85353104.jpg

  17. Remove the head bolts.
  18. Lift the head off the engine and place it on a clean workbench.
  19. Remove the head gasket. To install:
  20. Thoroughly clean the gasket mating surfaces. Remove all traces of old gasket material. Remove all carbon deposits from the combustion chambers. Lay a straightedge across the head and check for flatness. Total deviation should not exceed 0.001 in. (0.025mm). NOTE: The cylinder head gasket used on the 2.5L engine is a composition gasket. The gasket is to be installed dry. Do not use gasket sealing compound on the gasket.
  21. Fabricate 2 cylinder head alignment dowels from 2 used cylinder head bolts. Cut the head of the longest bolt off below the hex head. Then cut a slot in the top of the dowel to allow easier removal with a screwdriver.
  22. Install one dowel in bolt hole No. 10 and the other dowel in bolt hole No. 8.
  23. Place the cylinder head gasket over the dowels with the numbers facing up.
  24. Place the cylinder head over the dowels.
  25. Coat the threads of bolt No. 7 only, with Loctite PST sealant or equivalent.
  26. Install all head bolts except Nos. 8 and 10.
  27. Tighten the bolts in the sequence shown in the illustration to the following:
    1. Tighten bolts 1 through 10 in sequence to 22 ft. lbs. (30 Nm).
    2. Tighten bolts 1 through 10 in sequence to 45 ft. lbs. (61 Nm).
    3. Recheck bolts 1 through 10 in sequence to verify that they are 45 ft. lbs. (61 Nm).
    4. Tighten bolts 1 through 6 in sequence to 110 ft. lbs. (149 Nm).
    5. Tighten bolt 7 to 100 ft. lbs. (136 Nm).
    6. Tighten bolts 8 through 10 to 110 ft. lbs. (149 Nm). NOTE: During the final tightening sequence, bolt No. 7 will be tightened to a lower torque than the rest of the bolts. Do not overtighten bolt No. 7.
  28. Connect the temperature sending unit wire.
  29. Install the spark plugs.
  30. Install the compressor.
  31. Install the compressor/alternator bracket mounting bolt.
  32. Adjust the alternator drive belt.
  33. Install the air conditioning compressor drive belt.
  34. Install the intake and exhaust manifolds.
  35. Install the power steering pump bracket.
  36. Install the pushrods. Keep them in order!
  37. Install the rocker arms. Keep them in order!
  38. Thoroughly clean the mating surfaces of the head and rocker cover and install as outlined earlier in this section.
  39. Install the air cleaner.
  40. Connect the hoses at the thermostat housing.
  41. Connect the battery ground.
  42. Fill the cooling system.

Jul 08, 2010 | 1990 Jeep Wrangler

1 Answer

What do you loosen to remove serpentine belt from 1991 jeep wrangler with ac and power steering. thanks 4 cyl. 2.5


There is an idler pulley close to the power steering. Loosen the bolt that goes through the front of the idler pulley first. Then you will see the head of a bolt looking up at you. Turn the bolt clockwise to tighten and counterclockwise to loosen. The pulley is attached to the threaded bolt and it moves the pulley up or down as needed to adjust the belt tension. When the belt is replaced turn the bolt until the belt is tight. Remember to check the belt again after a few hundred miles. A new belt will stretch and loosen.

Dec 08, 2009 | 1991 Jeep Wrangler

1 Answer

Looking for Jeep TJ 4.0litre head bolt tension and sequence. it has the coil packs bolt to head no leads


First tighten to 25 ft/lbs then 50 then 85 except number 8 bolt only 75 lbs front 9   8 5   6  1   2 3   4 7   10

Oct 25, 2009 | 2001 Jeep Wrangler

2 Answers

I need to know the torque settings on the head for a 94 jeep grand cherokee laredo


Assuming the motor is an inline six
1.Middle bolt is number 1.Clockwise torque to 22 f/lb
2.Same pattern to 45 f/lb
3. same pattern to 100 f/lb
Be sure to use loctite 592 to the threads and some head gasket sealer to both sides of the head gasket.
Hope this helps

Oct 18, 2009 | 1994 Jeep Grand Cherokee

2 Answers

What is the tension on cylinder head bolts for a jeep grand cherokee 307935 4 litre, 6 cylinder, 1999, petrol motor.


Coat threads of left hand front bolt with sealant: 1st - step; - 22 ft./lbs. 2nd - step; - 45 ft./lbs. 3rd - step, all bolts except L.H. front bolt; - 110 ft./lbs. 4th - step, L.H. front bolt; - 100 ft./lbs. fig100.png

Sep 05, 2009 | 1999 Jeep Grand Cherokee

1 Answer

I WAS INSTALLING THE CYL HEADS ON MY JEEP 03 LIBERTY, THE MANUAL INDICATES A TORQUE OF 20FTLBS, THEN VERIFY, THEN 90DEGREES/ BUT THEY MENTION BOLTS 11-14 BUT THE HEADS ONLY HAVE 12 BOLTS?


  1. Step 1: Bolts 1–8 to 20 ft. lbs. (27 Nm)
  2. Step 2: Bolts 1–10 verify torque without loosening
  3. Step 3: Bolts 9–12 to 10 ft. lbs. (14 Nm)
  4. Step 4: Bolts 1–8 plus 1/4 (90 degree) turn
  5. Step 5: Bolts 9–12 to 19 ft. lbs. (26 Nm)

Aug 02, 2008 | 2002 Jeep Liberty

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