Head torque settings

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slugma
Posts: 53
Joined: Wed Feb 22, 2012 8:17 pm
Location: Mt Gambier

Head torque settings

Post by slugma »

Hey guys, i should be getting a new head at the end of the week.
My brother in law will be helping me fit it, (more to the point, ill be helping him!!)
He has said ill need to get the head torque sequence and how much to torque them.
If anyone here know this info, or where i can find it, that would be awesome!!
Thanks again guys.
Cheers, Matt.
MY05 GT Liberty
83 GJ Sigma
dvsfin
Posts: 527
Joined: Wed Nov 04, 2009 6:51 pm
Location: Liverpool, Sydney

Re: Head torque settings

Post by dvsfin »

it will have that information on the head gasket package
slugma
Posts: 53
Joined: Wed Feb 22, 2012 8:17 pm
Location: Mt Gambier

Re: Head torque settings

Post by slugma »

Thanks buddy! Let's hope its still in its packaging!
MY05 GT Liberty
83 GJ Sigma
A112H
Posts: 7681
Joined: Tue Mar 24, 2009 5:01 am

Re: Head torque settings

Post by A112H »

If it doesn't, or just to be safe hit 84GKSIG with a PM, he has just about every Sigma owners manual, he will be able to give you the settings.

http://sigma-galant.com/memberlist.php? ... file&u=149
slugma
Posts: 53
Joined: Wed Feb 22, 2012 8:17 pm
Location: Mt Gambier

Re: Head torque settings

Post by slugma »

Thank you! I'll be sure to contact him if I need it!
MY05 GT Liberty
83 GJ Sigma
tubby
Posts: 609
Joined: Mon Apr 06, 2009 6:28 pm
Location: Adelaide

Re: Head torque settings

Post by tubby »

astron 1 manual says: cylinder head bolts 89-98 nm, cylinder head to timing cover bolts 15-21 nm

astron 2 manual says: cylinder head bolts 110 nm, cylinder head to timing cover bolts 12 nm

cylinder head bolt tightening sequence
8 6 1 3 9
10 4 2 5 7
(if that makes sense)
'81 GJ Scorpion, '87 GN Panel Van, '77 Sigma sedan
amehel0
Posts: 104
Joined: Tue Jan 03, 2012 8:36 pm

Re: Head torque settings

Post by amehel0 »

By cylinder to timing head bolts they are the ones that are the closest to the fan side of the engine and need to be tightened to a lower torque then the actual head bolts. Make sure that you untighten them in this sequence:

1 4 6 11 9 3
1 2 8 10 7 5

The number one is the timing chain cover bolts. Also only break the bolts and then go back through and undo them. Then re tighten them in reverse of that sequence from the centre out. do it in 3 stages of torque i use 50,80 and then 108-113 Nm This is one of the most important fastenings in the engine so take your time and make sure you have used the correct torque. Also make sure you have a torque wrench with a high enough torque range. if your going to buy one get a large one around 200Nm as if you ever do a clutch replacement your going to need a lot of torque to tighten the flywheel.
amehel0
Posts: 104
Joined: Tue Jan 03, 2012 8:36 pm

Re: Head torque settings

Post by amehel0 »

Forgot to add the info i gave is for an Astron II and its what mitsubishi has in there manual.
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