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Category Archives: Diesel Engine Upgrades

Are Gas or Diesel Engines Better for Off-Roading?

Gas or Diesel Engines for Off Roading? First, We all know the Cummins 4BT is considered King of Hill when it comes to off-roading diesel engines. The low end torque output mixed with the reliability of a Cummins Industrial Engine can't be beat. That being said we are opened minded here at Big Bear... we…
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P7100 Fuel Pump Modifications for the 8 Valve 4BT

4BT Engine History and Background [caption id="attachment_11206" align="alignleft" width="224"] 4BT (3.9 L) 140 HP Engine[/caption] The Cummins 4BT has mostly been utilized in applications such as box trucks, small industrial vehicles and agricultural equipment. The 4BT is pretty much just a downsized version of the famous 5.9L 12V Cummins as these engines share almost all…
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Best Axles for an Off-Roading Jeep Equipped with a 4BT

Let’s talk about axles... If you’re into off-roading in a Jeep you might be pretty much up-to-speed when it comes to axles and which are the best to use - or are you? For the uninformed, all wheeled vehicles have axles and they’re used for steering, driving, and braking, so they’re pretty important. The axles…
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