Resolved Head Bolt / Stud Fastening pattern

[PeterEvo]

I read a few different opinions on what fastening sequence should be used when fastening the 10 headbolts of a 4G63. This week I will put the cilinderhead on my block again with new ARP's and I am curious what is seen as the best procedure.

 

[Gstclipse69]

Best procedure is as the stock manual states. From inside to outside in several torque stages.

 

[tscook3]

Yeah go by the manual if you have one or buy yourself a haynes manual. That should give you all the info you need.

 

[KevinRR]

You should start from the inside out in a criss cross pattern. And follow the torquing procedure from ARP in three step.

 

[My1GLaser]

According to the FSM:

<-----Camshaft sprocket side

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

Tighten in 2 to 3 steps. I hand tightened them all in sequence then did 20,50,80 with ARP moly lube, which gives more accurate torque readings then 30wt oil. Retorque after 5 heat cycles.

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[moi1463]

Make sure you don't drench the studs in the lube or oil, whatever you're using, because it will drip down to the bottom, creating a pocket and youre torque spec will be off.

 

[PeterEvo]

Thanks guys!