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Help! Need head bolt torque specs!

98JeepXJ

NAXJA Forum User
Location
Johnstown PA
Ok, I'm in the middle of replacing my head gasket. We're about to bolt the head back on and there's some confusion about the torque specs for the head bolts. I read somewhere that all bolts were to be (final)torqued to 100 and #11 to 110 ft lbs. I'm looking in my Haynes manual and it says the opposite, all bolts to 110 and #11 to 100 ft lbs.

Which way is it?

TIA!

Chad
 
Per MOPAR Jeep Engines, all bolts except the driver's front (#11) are 110 pound-feet, with #11 at 100 pound-feet.

Torque the bolts in a minimum of three stages.

If there are paint marks on the bolts, buy new ones. If you have taken these bolts out before, buy new ones. The bolts may only be resued ONCE.

If you are reusing them for the first and only time, mark the bolt heads with some bright colour of paint before installation, so you know to replace them next time...

5-90
 
The 2000 FSM says:
(1) Remove the shop towels from the cylinder
bores. Coat the bores with clean engine oil.
(2) Position the engine cylinder head gasket (with
the numbers facing up) using the alignment dowels
in the cylinder block, to position the gasket.
CAUTION: Engine cylinder head bolts should be
reused only once. Replace the head bolts if they
were used before or if they have a paint dab on the
top of the bolt.
(3) With bolt No.14 held in place (tape around
bolt), install the engine cylinder head over the same
dowels used to locate the gasket. Remove the tape
from bolt No.14.
(4) Coat the threads of stud bolt No.11 with Loctite
592 sealant, or equivalent.
(5) Tighten the engine cylinder head bolts in
sequence according to the following procedure (Fig.
56).
CAUTION: During the final tightening sequence,
bolt No.11 will be tightened to a lower torque than
the rest of the bolts. DO NOT overtighten bolt
No.11.
(a) Tighten all bolts in sequence (1 through 14)
to 30 N·m (22 ft. lbs.) torque.
(b) Tighten all bolts in sequence (1 through 14)
to 61 N·m (45 ft. lbs.) torque.
(c) Check all bolts to verify they are set to 61
N·m (45 ft. lbs.) torque.
(d) Tighten bolts in sequence:
² Bolts 1 through 10 to 149 N·m (110 ft. lbs.)
torque.
² Bolt 11 to 135 N·m (100 ft. lbs.) torque.
² Bolts 12 through 14 to 149 N·m (110 ft. lbs.)
torque.
(e) Check all bolts in sequence to verify the correct
torque.
(f) If not already done, clean and mark each bolt
with a dab of paint after tightening. Should you
encounter bolts which were painted in an earlier
service operation, replace them.
(6) Install the spark plugs and tighten to 37 N·m
(27 ft. lbs.) torque.
(7) Connect the temperature sending unit wire
connector.
(8) Install the ignition coil rail and coil rail electrical
connectors.
(9) Install the intake and engine exhaust manifolds
(refer to procedures in this section).
(10) Install the fuel line and the vacuum advance
hose.
(11) Attach the power steering pump and bracket.
(12) Install the push rods, rocker arms, pivots and
bridges in the order they were removed (refer to
Rocker Arms and Push Rods in this section).
(13) Install the engine cylinder head cover.
(14) Attach the air conditioner compressor mounting
bracket to the engine cylinder head and block.
Tighten the bolts to 40 N·m (30 ft. lbs.) torque.
(15) Attach the air conditioning compressor to the
bracket. Tighten the bolts to 27 N·m (20 ft. lbs.)
torque.
Fig. 55 Engine Cylinder Head Assembly
1 – CYLINDER HEAD BOLTS
2 – CYLINDER HEAD GASKET
3 – CYLINDER HEAD
CYLINDER HEAD BOLTS
POSITION DESCRIPTION
1,4,5,12,13 1/2 in.-13 BOLT
8,9 1/2 in.-13 BOLT WITH DOWEL
POINT
2,3,6,7,10,11,14 1/2 in.-13 WITH 7/16 in.-14 STUD
END
All bolts are 12 point drives for rocker cover clearance
Fig. 56 Engine Cylinder Head Bolt Tightening
Sequence
 
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