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.

Bruiser Turbo Diesel JK is a post from: Diesel Racer

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Interesting specs:

• BMW 335d
• 3.0 Liter, Turbocharged Inline 6-Cylinder Engine
• 6 speed automatic transmission
• 265 Horsepower @ 4200rpm
• 425 lbft @1750 RPM
• Rear Wheel Drive
• Clean Diesel

Rally Fighter Goes Baja is a post from: Diesel Racer

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• Original, welded steel tubular space frame with lightweight thermoplastic and carbon fiber body panels
• BMW M57 clean diesel engine
• Eye-popping 36mpg on the highway, or 30mpg in an off-road setting
• 425 lb-ft of torque, 265 horsepower, and only 3,100 lbs
• 18″ of suspension travel, to take on any desert–jumps and all
• Manually adjustable dual ride-height options, to go from the desert to the city with ease
• Seats for 4 adults, or 2 adults & 3 children

The Rally Fighter will be built in limited production in unique, regional Micro-Factories. The first Micro-Factory will be built in Phoenix, Arizona and will create 50 new, high-paying jobs–great news for our American automotive industry. Local Motors will soon announce cars for several more regions around the United States, and aims to eventually build 25-50 Micro-Factories catering specifically to car enthusiasts in local regions. This local car company is aiming to create 2,500 new automotive jobs nationwide in the next few years.
“We are passionate about American automotive. We want to bring the fun and pride back and we will do it one region at a time,” says Rogers.
Because they are local, Local Motors is able to offer a unique “Build Experience” with every vehicle purchase. Customers are invited to join experts in the regional Micro-Factory to build their own car. The program is customized for both the novice and the pro, and crafted specifically for car lovers. “Local Motors customers get the whole experience” says Mike Pisani, Vehicle Engineer and Car Builder, “They help design and develop the car they want, then they build it and in the process learn everything they need to know to maintain it. The Rally Fighter is not a disposable appliance, they are limited edition; only 3,000 will every be built. This is a car and an experience you can keep with you for a lifetime.”
You do not have to be a part of the community to buy the Rally Fighter. And if you don’t want to do your own maintenance, the Local Motors Micro-Factory doubles as a service station. Pisani says they plan to go so far as to pick vehicles up from customers’ homes, take them to the Micro-Factory for service, and return them — yet one more element of the innovative Local Motors ownership experience.

Diesel Rally Fighter is a post from: Diesel Racer

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Hayes Diversified Technologies (HDT) USA, the maker of the world’s only motorcycle purpose built diesel motorcycle engine, is entering the 2009 SCORE International Baja 250 which will be run in San Felipe, Mexico on March 14th. The world renowned off-road race will serve as a proving ground for the well tested and well prepared composite race team made up of members from HDT USA and Team SRD. The newly formed team will combine their successes from the diesel motorcycle land speed record at the Bonneville Salt Flats and their class 22 podium producing finish in the 2008 SCORE Baja 500.

In the early ’70s HDT raced and sold Pentons (early KTMs) and produced high-performance suspension and engine parts for motocrossers. In 2000 they sent the Marines their first diesel prototype motorcycle (based on the Kawasaki KLR650) for testing; the production model was delivered by HDT in September of 2006. Current owner of HDT Fred Hayes and associate Bryon Schmidt—both veterans—enjoy using racing to develop diesel record-breaking motorcycles at Bonneville. HDT USA is honored to serve the men and women of our Armed Forces by providing the best equipment possible. HDT USA is proud to provide the best in diesel motorcycle technology to both our government and civilian customers.

Longtime motorcycle enthusiast Bryon Schmidt will be the team’s rider of record. Bryon (42), from Hesperia, California, serves as a chief diesel motorcycle maintenance consultant and senior testing specialist for HDT USA which is under contract with the Department of Defense for the production of the military version of the diesel motorcycle. Bryon was hired by HDT USA after faithfully completing a successful career in the US Marine Corps having been the chief instructor at the USMC Combat Motorcycle School.

Kirk Russell (46), from Bend, Oregon, will ride the second half the 232 mile race, starting at race mile 120. Kirk was a member of the 2008 SRD race team that made its first appearance on the podium in the Baja 500. Kirk brings four decades of racing experience to the team. He is also the first one that raced the 670cc diesel motorcycle in any off-road sanctioned race. In that inaugural race, Kirk held his own in a 2008 AMA District 38 desert race by completing the first lap as one of the first 10 bikes to come in – he was competing in the Open, Expert class. Even more impressive was the fact that it was his very first time to ride the 420 lb motorcycle. Kirk is a former #1 plate holder for the Oregon Desert Racing Organization (ODRA).

The HDT motorcycle diesel engine is based on state-of-the-art high-speed automotive diesel engine technology, engineered into a complete power unit suitably sized and packaged for installation in a compact on/off road motorcycle. The basis of the design is a technology demonstrator program for a motorcycle diesel engine carried out by Cranfield University in the United Kingdom. The aim is to produce the best possible power and torque without the need for turbocharging. To achieve good power, an advanced, thermally robust, free-breathing four valve cylinder head is used, in combination with an indirect injection combustion system and intensive development and tailoring of the fuel injection characteristics. Indirect injection also gives lower combustion pressures – enabling lighter engine construction, less ‘diesel knock’ and low particulate emissions.

Jeff Smith (46), from Oceanside, California, will serve as the team’s backup rider. Jeff also develops the training plan to support the riders in their preparation for the race as well as writes the rider’s “Smart Pack” and chase team’s logistical “Chase Plan” to execute the race in a seamless and well orchestrated fashion. Jeff credits Kirk and his father Mike Russell for introducing him into desert racing as they first started racing together in the mid-1970s. Jeff’s also brings a fierce competitive spirit to the team from having served 22 years in the US Marine Corps.

The dynamic duo of Justin & Heather Herrmann (24 & 23), from Vista, California provide the “logistical support” to HDT USA / Team SRD. Strategic Racing Designs (SRD) is co-owned by these two award winning & enterprising high-performance off-road fabrication specialists. In addition to designing & building “one-off” products for the demanding off-road industry, Justin brings a decade & a half of motocross / supercross racing experience to the team. Having reached the pinnacle of his supercross career, and now turning his interests toward the off-road industry, Justin’s racing consultation, enthusiasm and mechanical expertise serve the team well. Heather’s background in administration, parts & service round out the team’s needs as she brings years of experience running the “front office”. She also designs industry oriented eye catching graphics for team vehicles and team apparel and documents team events with unsurpassed video presentations.

With Sal Fish & SCORE International heavily promoting the use of alternative fuels and “greener” race vehicles, HDT USA / Team SRD is both proud & excited to introduce the off-road world to the capabilities, performance & endurance of the diesel motorcycle as they compete in the infamous Baja Series off-road races.

Diesel Motorcycle to enter SCORE Baja 250 is a post from: Diesel Racer

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Why does an engine with huge torque and low maximum RPM get a low horsepower rating? We know that one horsepower is equal to 33,000 foot-pounds of work per minute. By this measure, one horse can raise 33 pounds 1,000 vertical feet in a minute, or 330 pounds 100 feet in a minute, or 3,300 pounds 10 feet in a minute, and so on. What an engine naturally produces, however, is torque. Think about one piston in a gasoline engine. When the gasoline ignites, it pushes on the piston, and the piston exerts pressure on the crankshaft, causing it to turn. The crankshaft feels some number of foot-pounds of torque in the process. There are three variables that affect torque:

• The size of the piston face
• The amount of pressure that the ignited fuel applies to the face of the piston
• The distance the piston travels on each stroke (therefore the diameter of the crankshaft). The bigger the diameter of the crankshaft, the bigger the lever arm and therefore the more torque.

There is a direct relationship between horsepower and torque. You can convert torque to horsepower with the following equation:

HP = Torque * RPM / 5,252

That 5,252 number, by the way, comes from dividing 33,000 by (2 * pi). Imagine taking 33,000 foot-pounds and walking it around in a circle rather than a straight line. For example, if you took a 10 foot pole and attached it to a vertical axle, the circumference of its circle is:

circumference = 10 * 2 * pi = 62.8 feet

If one horse is pushing on the pole with 100 pounds of force (1,000 foot-pounds of torque), it can move the pole at 5.25 RPM. Torque and horsepower are directly related to each other.
You can see from the horsepower equation that high RPM values favor horsepower. If you take an engine with a certain torque and run it at very high revs, it can generate lots of horsepower even though its torque hasn’t changed at all. A racing engine can produce relatively low torque, but because it can rev so high it gets a great horsepower rating. A big diesel has huge torque, but “gets no respect” in terms of horsepower because it cannot ever get above 2,000 RPM. This “makes sense” — if two engines produce the same torque, the one that can do it more times per minute does more work and therefore has more power.

The difference in maximum RPM ratings also tells you why trucks need so many gears. A race car engine might idle at 1,000 RPM and can accelerate to 15,000 RPM — a multiplier of 15. A big diesel might have a multiplier of only 2 or 3. Because the RPM range between minimum and maximum is so small on a diesel, there needs to be lots of different gears to keep the engine in its productive RPM range at any speed.

Diffrence between big diesel engines and race car engines is a post from: Diesel Racer

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Aside from the block configuration, the two engines share much of the same technology including high pressure common rail injection and piezo electric injectors. The Touareg Trophy Truck will debut sometime this fall. Drivers Ryan Arciero and Mark Miller will compete in the Baja 1000 with the Touareg V-12 TDI in November 2008. Arciero and Miller have previously won the diesel class at the Baja 500 with a 2.5L five cylinder Touareg TDI and the Pikes Peak Hill Climb with a 5.0L V-10 powered version.

V12 TDI Touareg Trophy Truck by Volkswagen is a post from: Diesel Racer

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