Need the torque setting for Cosworth ARP Head Stud's also how many stages are they suppose to done up in?

 

1) To ensure proper thread engagement and accurate torque readings, clean and re-tap, if necessary, ALL threads in the block.

2) Clean and inspect all hardware prior to installation. Look for obvious defects or shipping damages, plus proper fit, length and dimension.

3) a. If cylinder head studs protrude into water jacket, lubricate the block threads of the studs with ARP THREAD SEALER.

b. If cylinder head studs protrude into blind hole, lubricate the threads, nuts and washers with ARP THREAD LUBRICANT or 30wt oil.

c. Screw studs into block "HAND TIGHT ONLY".

NOTE: LOCTITE MAY BE USEED IF A PERMANENT MOUNTING OF THE STUDS IS PREFERRED. THE FASTENERS, HOWEVER, MUST BE TORQUED PRIOR TO THE LOCTITE SETTING UP.

4) Install cylinder head and check for binding or misalignment.

5) ARP recommends using the ARP MOLY LUBRICANT or, at the very least, a good quality Moly Lubricant as opposed to motor oil. This is due to higher friction on the studs as well as inconsistencies in the clamping force of the fasteners when motor oil (or low quality lubricant) is used.

PRELOAD (TORQUE) RECOMMENDATIONS:

Torque values are based on 75% of fasteners yield strength. Use the manufacturers torque sequence but do not use the engine manufacturers torque specs.

Torque the nuts to 81ft lbs for ARP MOLY ASSEMBLY LUBRICANT (or thread sealer) or torque to 105 ft lbs with 30 wt motor oil.