A new Cummins 4BT long block is like Black knight, economical solution for a majority of customers, 4B Engines are various HP ratings from 60-140, we also offer Cummins 4BT engine for sale (rear gear train and front gear train).
• 4B 76 HP - (Inline A Pump)
• 4BT 105 HP - (Inline A Pump)
• 4BTA 130 HP - (Inline A Pump)
• 4BTAA 140 HP - (Rotary or P-7100 Fuel Pumps)
Long Block Parts List:
1 Cylinder Block
2 Cylinder Head
4 Con Rod
5 Piston Kit
6 Crankshaft Seal Rear&Front
7 Gear Housing & Cover
8 Oil Pump
9 Water Pump
10 Oil Cooler& Oil Filter Head
11 Valve Housing Cover
12 Push Rod Cover
13 Rocker Lever
Cummins 4BT Engine Off-Roading Applications:
Cummins 4BT New Engines The off-roading community has taken quite a liking to the Cummins 4BT engine; known primarily as 4BT Jeep Swaps. The 3.9 Cummins engine won’t win any races as the maximum horsepower is only 105 hp at 2,300 rpm, but however the engine is extremely popular when it comes to its torque ratio. The standard 4BT will produce 265 lb-ft of torque at 1,600 rpm, but basic upgrades can increase its torque ratio to well over 750 lb-ft. That is a lot of torque at the wheels; and low rpm torque is perfect for traversing steep inclines or hugging the edge of a trail. There is a whole community over at 4BTSwaps.com that focuses on all the info you will ever need to swap a 4BT Cummins into an off-road vehicle.
Cummins 4BT engines are also easy to maintain, simplistic design and can help a vehicle return 30-40 mpg with performance upgrades. The 4BT is the most popular diesel engine swap for off-roading because it is straightforward to upgrade the turbo, camshaft, injectors and fuel pump in addition to being the biggest diesel engine that's packageable in a Jeep or 4Runner. A Cummins 6BT will simply be too large.
Note, long block and extended long block replacement units are sold for use in existing industrial and automotive applications. Intended use of the long block or extended long block package is meant to replace worn or defective existing internal gear train engine components. Bell housing, fuel systems, solenoids and electrical parts are not included and are intended for individual one off parts replacement of existing worn engine components from the customer’s existing engine.
The Legend Behind The 4BT Cummins
Part of the B series line that also featured the popular 6BT (aka 5.9L) Cummins offered in 3/4-ton and 1-ton Dodge Rams, the 4BT Cummins was designed with industrial applications in mind. Even though the 4BT is the little brother of the 6BT, its arrival pre-dates the 6BT, first entering production in July of 1983. For all intents and purposes, the 4BT is 2/3 of a 6BT Cummins engine, which means the same burly, overkill hard parts employed in the 5.9L are also used in the 3.9L 4BT. It's no wonder they live as long as they do, even when being worked 'round the clock.
A straightforward, fully mechanical fuel injection system completes the 4BT Cummins simplistic design. A cam-driven mechanical lift pump supplies low-pressure diesel to the injection pump, and the injection pump distributes highly pressurized fuel to four pop-off style, mechanical injectors. Three types of Bosch injection pumps are used on the 4BT Cummins: the rotary (distributor type) VE, the inline pump (P-pump) P7100, and the A pump (also an inline pump). Performing a few simple tweaks on the injection pump, courtesy of a few common hand tools, can unleash substantial performance gains, especially on an engine sporting a P7100.