Info needed about 2RZ hIiace head bolts ?

[tassie2]

Hi all.

Have have 2RZ 2.4l petrol motor in 93 hiace in Oz.

Q) is it required to retorque head bolts after period of use?
Was a new crate motor.

If so what would be the torque specs on head bolts?

Also what are specs on socket type that fits the head bolts?

Any info appreciated thanks.

[Flecker]

A crate engine? As in, from Toyota? I wouldn't bother re-torquing the head bolts in all honesty.
I know they say 500 miles, blah blah blah… but if they were torqued down right to begin with it shouldn't be an issue. Especially in a crate motor.

Anyhow, heres the torque specs for the 2rz: (As for the socket size, prolly 17mm... but if your pulling the valve cover you will know the size anyways. 6 point is best for torque)

Throttle body

mounting nuts/studs: 13 ft-lbs

Spark plug: 14 ft-lbs (2RZ/3RZ), 13 ft-lbs (5VZ)

Oil drain plug: 27 ft-lbs

Engine mount to frame: 28 ft-lbs

Engine mount to block: 38 ft-lbs (2RZ/3RZ), 32 ft-lbs (5VZ)

Head bolts: 29 ft-lbs + additional 90° + another 90°

(2RZ/3RZ)

Head bolts: 25 ft-lbs + additional 90° + another 90° , recessed 13 ft-lbs (5VZ)

Main bearing caps: 29 ft-lbs + additional 90°(2RZ/3RZ), 45 ft-lbs + additional 90° (5VZ)

Exhaust manifold: 36 ft-lbs (2RZ/3RZ), 30 ft-lbs (5VZ)

Intake manifold: 22 ft-lbs (2RZ/3RZ), 13 ft-lbs (5VZ)

Air Intake Chamber: 15 ft-lbs (2RZ/3RZ), 13 ft-lbs (5VZ)

Crankshaft pulley bolt: 193 ft-lbs (2RZ/3RZ), 217 ft-lbs (5VZ)

Oil pan bolts: 9 ft-lbs

Rear main oil seal: 9.7 ft-lbs

Rear end plate: 14 ft-lbs

Starter mounting bolts: 29 ft-lbs

Pressure plate to flywheel: 14 ft-lbs

Flywheel to crankshaft bolts: 65 ft-lbs (2RZ), 19 ft-lbs + additional 90° (3RZ), 63 ft-lbs (5VZ) ~USE LOCTITE~

Flexplate to crankshaft bolts: 54 ft-lbs (2RZ/3RZ), 61 ft-lbs (5VZ)

[tassie2]

Thanks for information. Is Asian crate motor got down in Oz. Not a Toyota issue. All brand new parts. Will pull cover and check when head bolts type anyway.