As of 01/2007

When assembling the bolts use ARP assembly lube under the heads and on the threads and torque up to: -

ROD-SUZ-1.3BUSA-S-01 (5/16"UNF)ARP 625+ - 48 lbft

We would suggest the use of a Stretch Gauge to achieve the desired preload on the bolt instead of just a Torque setting- 0.15mm to 0.17mm stretch is required without exceeding 50 lbft.
This method also gives a good indication of the condition of your rod bolts, if the desired amount of stretch occurs at a significantly lower poundage than suggest by us, the rod bolts have exceeded their working life and should be discarded.

NOTE: - We cannot be held responsible for rod bolt stretch when an uncalibrated torque wrench has been used.
THE FOLLOWING NOTES ARE IMPORTANT.

ALWAYS wash the fasteners with cleaning solvent prior to installation.
They come coated with a "protective" coating, this is NOT a lubricant.

The method to follow for applying lubricant:
1. Coat the fastener with lubricant as evenly as possible.
2. Pull up the fastener so that it is 'snug'.
3. Repeat '2' three times, on the third time torque to the recommended torque setting.
The above method no doubt seems strange, but does ensure no metal-to-metal contact that increases friction between the threads.

The torque figures shown will give a preload equal to 75% of the yield strength of the fastener.

Do not use lock tabs. They are made from too soft a material and as it squeeze's out the fastener preload is lost.

Due to leverage differences a fine thread will produce a greater preload for a given torque than will a coarse thread of the same diameter.

For all connecting rods check that the chamfer required to clear the bolt under head radius is adequate - this if VERY important.

Once the bolt has been torqued down to the correct setting, if the bolt is removed again, it must be replaced.