mk4gartrac

Just bought an ARP stud and nut kit to clamp the head down nice and tight just wondering if anyone has any advice on tightening sequance and torque settings?

SafeChav

if im not mistaken ARP products come with instructions.........?

mk4gartrac

They do but i have read lots of conflicting things and i just want to be sure im doing the right thing

SafeChav

well i personally would say ARP know more about their fasteners than anyone else

mk4gartrac

Has anyone fitted a head using this kit?

mk4gartrac

I have been told to torque the head to 80blf in the usual sequence and forget the 180 turn??????????

SafeChav

what does the instructions say?

mk4gartrac

Use manufacturers torque sequence but do not use the engine manufacturers torque specs.Torque the nuts to 80ft.lbs

But the manufacturers sequence says after torqueing to turn through 180degres.I have read that this then overloads the head gasket (due to bolts no being stretch bolts)and to just torque it down to the 80ft.lbs

SafeChav

torque sequence is the order you tighten the bolts in, the torque specs are the tightness of each one..........

Barry R

iTrader: (3)

that means tighten from the middle out
9 3 1 5 7
8 6 2 4 10
ex side

sailorbob

Tightening sequences taken from the Cosworth workshop manual;

3 dr & 2wd Sapphire:

ex side
9 5 1 3 7
8 4 2 6 10
in side

4wd Sapphire & Escort (both large and small turbo) :

ex side
9 3 1 5 7
8 6 2 4 10
in side

If you are using the 190000 psi, 12 mm ARP stud kit you only torque the nuts up to 80 ft lbs when using ARP's moly assembly lubricant.

Barry R

iTrader: (3)

this is correct for a rs turbo.

mk4gartrac

If you are using the 190000 psi, 12 mm ARP stud kit you only torque the nuts up to 80 ft lbs when using ARP's moly assembly lubricant.

Thank you sailorbob thats all i needed confirming.