Head bolt torque ? Vin F 4g63

[poppabear]

Ok, so i looked on Mitchelle OnDemand5 for the torque specs for my head with resulting it telling me 15ft lbs + 1/4 turn ...? This doesn't sound right to me!

What is the correct torque??

Thanks, mike

 

[fwdmaster]

3 torque steps, 30,60,80

 

[Cabray_95gsx]

If you are using stock head bolts or aftermarket studs these numbers may vary. But the torque steps given should work fine.

 

[Barracuda]

This is what Mitsubishi service manual says:


CYLlNDER HEAD BOLT INSTALLATION

(1) When installing the cylinder head bolts, check, that rthe
shank length of each bolt meets the limit. If the limit is,
exceeded, replace the bolt.
Limit: Max. 99.4 mm (3.91 in.)

(2) Apply engine oil to the threaded portions of bolts ‘and
to the washers.

(3) According to the tightening sequence, tighten the bolts
to the specified torque 78 Nm (58 ftlbs.) using special
t o o l (MB991654)

(4) Loosen bolts completely.

(5) Retighten the loosened bolts to 20, Nm (14.5ft.lbs.) in
the specified tightening sequence.

(6) Make a paint mark across each bolt head and cylinder
head.
(7) Give a 90 degrees turn to the bolts in the specified tightening
sequence.
(8) Give another 90 degree turn to the bolts and make sure that
the paint mark on the head of each, bolt and that on
the cylinder head are on the same straight line.


Caution
1. If the bolt is turned less than 90 degrees, proper fastening
performance may not be expected. When
tightening the bolt, therefore, be careful to give
a sufficient turn to it.
2. If the bolt is overtightened, loose the bolt
completely and then retighten It by repeating the
tightening procedure from step 1.






If they are aftermarket bolts, do like fwdmaster told you.

 

[poppabear]

Thanks everyone for the help.