Before you final stretch the rod bolts, it’s important the bolt and rod threads are fully seated.
- Install rod bearings
- Align matching printed numbers on rod and cap
- Assemble cap to rod
- Apply ARP assembly lube to bolt threads
- Hand tighten bolts
- Using a quality calibrated torque wrench, torque bolts to 50 ft/lbs
- Break bolts loose, and again torque to 50 ft/lbs
- Break bolts loose, then torque to 50 ft/lbs one final time
STEP 2 -FINAL TORQUE:
The final torque spec is .006″ (stretch gauge) or 50 ft/lbs (torque wrench) with ARP assembly lube. The preferred method of measuring bolt load is with a stretch bolt gauge.
- Loosen bolt and zero stretch gauge
- Tighten bolt to .006″ stretch
- Loosen second bolt and zero stretch gauge
- Tighten second bolt to .006″ stretch
- Loosen bolt
- Tighten bolt to 50 ft/lbs
- Loosen second bolt
- Tighten second bolt to 50 ft/lbs
- Do not exceed rod bolt stretch/torque. If bolt stretch is exceeded, replace rod bolts with new ones.
- Torque wrench settings are given as a guide only, to ensure proper bolt installation a stretch gauge is required.
- Do not install bolts dry or with any other lubricant than the supplied ARP assembly lube.