Arp 2000 bolt torque specifications

Written by manny jeter
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Arp 2000 bolt torque specifications
Applying torque to an engine. (Fabrizio Costantini/Getty Images News/Getty Images)

ARP 2000 cap screws are an aftermarket brand of caps screws. The ARP 2000 cap screws are used on an aftermarket brand of crankshafts and rods called Scat. You should disassemble the rods and crankshafts and thoroughly clean them before applying the correct amount of torque to the cap screws. The following torque specs apply to the cap screws if you are using the recommended ARP Moly lubricant.

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ARP 2000 Torque Specs

The 5/16-by-1.5-inch ARP 2000 cap screw should be tightened with 26 foot-pounds of torque while not exceeding a 0.0056-inch stretch. The 3/8-by-1.6-inch ARP 2000 cap screw requires 50 foot-pounds of torque while not exceeding a 0.0058-inch stretch. The 7/16-by-1.6-inch ARP 2000 cap screw must be tightened with 70 foot-pounds of torque while not exceeding a 0.0062-inch stretch.

ARP 8740 Torque Specs

The 3/8-by-1.6-inch ARP 8740 cap screw requires 45 foot-pounds of torque while not exceeding a 0.0047-inch stretch. The 7/16-by-1.4-inch ARP 8740 cap screw should be tightened with 64 foot-pounds of torque while not exceeding a 0.0046-inch stretch. The 7/16-by-1.6-inch and the 7/16-by-1.8-inch ARP 8740 cap screws require 63 foot-pounds of torque. The 7/16-by-1.6-inch cap screw should not exceed a 0.005-inch stretch and the 7/16-by-1.8-inch cap screw should not exceed a 0.006-inch stretch.

ARP 8740 Wave Loc & tScat 2001 Torque Specs

The 3/8-inch ARP 8740 Wave Loc bolt and nut should be tightened with 50 foot-pounds of torque while not exceeding a 0.0063-inch stretch. The 7/16-by-1.5-inch and the 7/16-by-1.8-inch SCAT 2001 cap screws require 63 foot-pounds of torque. The 7/16-by-1.5 inch SCAT 2001 cap screw should not exceed a 0.005-inch stretch while the 7/16-by-1.8-inch SCAT 2001 cap screw should not exceed a 0.006-inch stretch.

Instructions

You should install the rods by aligning the cap and beam. Assemble each rod with the cap and beam that have the same number as the rod. Tap the beam and caps into place before installing and applying the torque to each bolt, nut and cap screw.

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