Bruiser Turbo Diesel JK

Posted by Cetane_100 on 12. November 2011 |

Bruiser Conversions is setting a new standard in power for Jeep JKs. With the Cummins 4BT Turbo Diesel Power Plant, Jeep enthusiasts can now boast improved performance in torque, fuel economy and fuel capability, and of course, the cool factor of a diesel engine. In fact, the 4BT engine is capable of producing 400 ftlbs of torque at 1700 rpms. “After several years of intense research with different applications, the reliability, torque and power benefits just made this a no-brainer,” says Jeff Garland, founder of Bruiser and owner of Jeff’s Jeep Yard in Clearwater, FL. With multiple fuel capabilities, the Bruiser 4BT engine can run on several different types of fuel, including waste vegetable oil and bio-diesel. Don Altman, co-owner of Trail Jeeps in Boulder, CO, installs HEMI engines in Jeeps and sought out Garland to provide another source of power to his Jeep clients. “The HEMIs don’t hit full power until the rpm gauge shows 4000 rpm. By that time, catching traction might rip the axles off the jeep in an off-road situation. The ability of the diesel pilot to control the power is like nothing I’ve ever felt off-road,” says Altman.

Some of the benefits of the 4bt conversion in an off road environment.
Torque comes in at a very low rpm enabling excellent control of vehicle with minimal tire spin and excellent traction in an off camber situation caused by added weight. Economy is a plus; in our tests, a correctly modified jeep unlimited can achieve 28 mpg around town and upwards of 30 mpg on the interstate. Depending on build sheet and modifications to engine as well as tire size and gear ratio. Average Unlimited with 37 inch tires and 3.73 to 1 ratio w/ 120 hip and 380 ft. of torque , with automatic Raptor 700r 4 speed over drive will achieve 26 to 27 mpg around town and 30 plus on highway @ 1600 rpms. Multiple fuel capability, the bruiser has the capability to run on several different types of fuel with little or no modifications, such as waste vegetable oil, bio-diesel etc.

I want to have the 4BT conversion done!

We have a team of Facilities to do the installs Trail Jeeps in Boulder Co, River Raider in Chambersberg, PA, And Brusier in Clear water, FL.
Cost for a JK Unlimited 4BT conversion.

When customer supplies the jeep the base package is $ 21,500 and up from there depending on individual build sheet.
Expected time my jeep will be under construction.

The average install takes 10 working days. This includes break in time, typically 200 miles. The more options that are added to the build sheet the more time that is necessary for build in accordance with additional options.
What facility is the best at doing the installation?

The best facility to do the job is going to be the facility that is closest to your location. All 3 shops are expert installation facilities, with intense training of both installation of kits and application of all components that are being used in the 4bt conversion.
The 4BT engine is the best engine for a diesel conversion in a jeep.

After research over several years and several different applications, the torque and power as well as reliability and economy with multi fuel capabilities of the 4BT make it kind of a no brainer.
Engine Name:
Cummins B series 3.9L/4BT Turbo diesel
Focus Application:

2007-2011 Jeep JKU
1997-2006 Tj Wrangler and Unlimited
1987-1995 YJ wrangler
1976-1986 CJ

Configuration:

Inline 4 Cylinder Turbo Diesel
Displacement:
3.9 L, 239 Cubic Inches
Bore:
4.02 inches
Stroke:
4.72 inches
Compression Ratio:
17.5:1
Aspiration:
Turbo Charged, Non Intercooled
Engine Weight:
725-765 lbs
Oil capacity:
10 Quarts
Horsepower:
105-170 Hp@ 2300 RPM*
Torque:
265-420 lb-ft@ 1600 RPM*
*HP&Torque Ratings vary by application

What do the 4BT engines come from?

4Bt Cummins engines come in a wide variety of applications such as, early Dodge trucks, UPS trucks, FED X trucks Grumman step vans, and the like.
Obtaining parts to repair the 4BT.

All parts are still very accessible through most local parts stores such as NAPA, AUTO ZONE, or Your local Cummins dealer.
Power specs of a Cummins 4bt.

A stock 4bt can range from120 hp – 170 hp and 360 ft. lbs. – 425 ft. lb. of torque, depending on engine series and what type of injection pump, turbo upgrades, injectors and other modifications of your desired build application. Remember the more power that you achieve the less fuel economy. There is a happy medium that can be achieved for each individual’s desires and we can spend time initially to over come these desires with options for future upgrades if necessary.
Transmission options.

The bruiser Diesel conversions presently come with 3 options for transmissions. The first is the automatic version utlizes the Raptor 700r, produced by P.A.T.C., which is based on the 700r4. This unit, unlike its predecessor, is capable of handling up to 600 ft. lbs. of torque .
Second is the heavier duty 4l80 , an automatic transmission, capable of holding 850 ft. lbs. of torque.
The third is our Manuel version which, like the motor, is a proven warrior. The nv4500 has been used predominately in diesel applications for years and is one of the best Manuel transmissions ever produced.

Life expectancy of the 4bt.

The average life expectancy of a stock 4bt is 350,000 to 500,000 miles!
Do all factory gauges work with conversion?

All factory gauges work as they did before. The only thing you lose is the factory cruise control but if this is important we do offer aftermarket kit that works just fine.
Is the bruiser conversion legal for street use?

Bruiser offers an off road only application as well as a street legal version TBA (To be announced) that will enable you to legally drive vehicle on hwy.
Alternative fuel systems for the 4bt.

Bruiser diesel conversions offer a filtration system for W.V.O. (waste vegetable oil) as well as heated fuel tanks.

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