Get John Deere 6081 Engine Torque Specs

Though it's quite restrictive, the factory cast-iron 12-valve cylinder head will allow you to reach 500 hp, but that aged head gasket might not live at 35-45 psi of boost.

Replacement hold down nuts for the 12 Valve Cummins. Factory recommended torque spec is 44 ft-lbs. The hold down nuts may need additional torque if the nut is leaking or bubbling fuel.

Recommended bolt torques. Size (in)Torque (lbf ft)SAE Grade 23/41151387/812914411882108 more rows

Main Torque: For new bolts, 89 lbs, loosen, 44 ft/lbs, 63 ft/lbs, + 120 degrees. For used bolts 44 ft/lbs, 59 ft/lbs, + 90 degrees.

What are the 4BT Cummins engine's performance specs? 4BT Cummins engines produce 105 horsepower at 2,300 rpm and 265 lb-ft of torque at only 1,600 rpm. This is thanks to direct fuel injection and turbocharging.

The 12-valve 5.9L 6BT Cummins came out of the box with 230hp, 440 lb-ft of torque and a P7100 inline injection pump. While it began life as an agricultural engine, its popularity picked up immensely once it was put into Ram trucks starting in 1989.

Though it's quite restrictive, the factory cast-iron 12-valve cylinder head will allow you to reach 500 hp, but that aged head gasket might not live at 35-45 psi of boost.

5.9-Liter Cummins: How Modifiable Are P-Pump Engines? Because of the improvements made to the 5.9-liter in 1994, the output increased. Depending on the transmission being used, a P7100-equipped 12-valve can churn out 175 horsepower and 420 lb-ft of torque.

Replacement hold down nuts for the 12 Valve Cummins. Factory recommended torque spec is 44 ft-lbs. The hold down nuts may need additional torque if the nut is leaking or bubbling fuel.

In our experience, the 4BT's stock rotating assembly—which was only subjected to 105 hp in factory form—can handle up to 400 horsepower and 800 lb-ft of torque without breaking a sweat.

Recommended bolt torques. Size (in)Torque (lbf ft)SAE Grade 23/41151387/812914411882108 more rows

From the factory, Cummins uses a torque-angle method of tightening head bolts, which usually will result in a torque spec of a little more than 115 lb-ft.

Main Torque: For new bolts, 89 lbs, loosen, 44 ft/lbs, 63 ft/lbs, + 120 degrees. For used bolts 44 ft/lbs, 59 ft/lbs, + 90 degrees.

Based on the same inline-cylinder block logic as the 5.9L powerplant—with two fewer cylinders of course—the 4BT (which deciphers as 4-cylinder, B-Series, Turbocharged) debuted in 1983 with two-valves-per-cylinder and made 105 hp and 265 lb-ft of torque.

What are the 4BT Cummins engine's performance specs? 4BT Cummins engines produce 105 horsepower at 2,300 rpm and 265 lb-ft of torque at only 1,600 rpm. This is thanks to direct fuel injection and turbocharging.

The 12-valve 5.9L 6BT Cummins came out of the box with 230hp, 440 lb-ft of torque and a P7100 inline injection pump. While it began life as an agricultural engine, its popularity picked up immensely once it was put into Ram trucks starting in 1989.

5.9-Liter Cummins: How Modifiable Are P-Pump Engines? Because of the improvements made to the 5.9-liter in 1994, the output increased. Depending on the transmission being used, a P7100-equipped 12-valve can churn out 175 horsepower and 420 lb-ft of torque.

In our experience, the 4BT's stock rotating assembly—which was only subjected to 105 hp in factory form—can handle up to 400 horsepower and 800 lb-ft of torque without breaking a sweat.

From the factory, Cummins uses a torque-angle method of tightening head bolts, which usually will result in a torque spec of a little more than 115 lb-ft.

Based on the same inline-cylinder block logic as the 5.9L powerplant—with two fewer cylinders of course—the 4BT (which deciphers as 4-cylinder, B-Series, Turbocharged) debuted in 1983 with two-valves-per-cylinder and made 105 hp and 265 lb-ft of torque.