Question about 2006 Nissan Xterra
Would like to know the tightening sequence and the torque specification for this task
Hello. I can help you out. Just need to know if it is 2x4 or 4x4 and what liter size is this engine?
You can go to autozone.com and register for free and you will get full free online repair manual.
Just let me know.
Posted on Nov 15, 2009
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Posted on Jan 02, 2017
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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!
Feb 06, 2011 | 1998 Mazda Pickup
Fig.: Cylinder head torque sequence - 6 -cylinder engine
Cylinder head torquing should proceed in three steps and in the
prescribed order. Tighten them first to 50-55 ft. lbs. (65-71 Nm), then
give them a second tightening to 60-65 ft. lbs. (78-84 Nm). The final
step is to 70-75 ft. lbs. (91-97 Nm), at which they should remain
Six IN V - 6V
Fig.: Cylinder head bolt torque sequence - 6 -cylinder engine
Tighten the head, according to the illustrated sequence in three progressive steps. Tighten the bolts to 50-55 ft. lbs. (68-74 Nm), then 60-65 ft. lbs. (81-88 Nm) and finally to 75 ft. lbs. (102 Nm).
Hope this helps (remember to rate and commene this answer).
Jan 19, 2011 | 1985 Ford LTD
Fig. Cylinder head bolt torque sequence-3.8L engine
Fig. Tighten the cylinder head bolts using the following sequence-31L and 3.4L engines
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