ARP Rod Bolt / Conflicting Info?
 

The directions with the bolts call for torqueing 3 times with their assembly lube on the threads and nuts. Don't the threads have to be clean to loctite the nuts :confused:? Directions call for 35 pound feet.

Help please.

We used ARP's stretch guage, and found that the actual tork required to reach the right length was closer to 50-55 foot pounds. No loctite required.

Do not loctite them.

ARP uses the assembly lube to obtain correct torque when tightening the rod bolts, head studs, etc. If the bolt and hut were dry when you tightened them, you would arrive at a different final torque then if they had the assembly lube on them. Never, ever loctite ARP componants! Follow the ARP directs to a "t", and you will be good to go.

The reason for 'excercising' new bolts is to burnish the threads and remove all of the rugosity and reduce stiction. This procedure will have a significant influence on the 'dry' torque figure for a specific bolt.

The correlation between torque and stretch is significantly inluenced by both surface finish and the type of lubrication being used.

Dry torque figures can be reduced by 20% with basic oils and some of the ARP thread lubes recommend a 50%reduction to avoid over tightening.

Stretch is always the safe option and should be unaffected by thye type of lube used.

thanks
 

That was what I was thinking. ARP Instructions supersede.

Alan