Once again, we’re highlighting another wicked fast diesel truck inside the greatest country in the world and our next stop is New Mexico. So far, inside the land of enchantment, the fastest submitted diesel is Monarch Diesel Performance’s owner, Stephen Pachta. Pachta is a diesel guru through and through and his passion for diesel repair and performance has translated into a pretty fast hobby. In fact, his third-generation Ram truck has been deep into the 10-second zone with much more in the tank.
Pachta’s truck, Maggie, as they call it, was really a simple build. In fact, this is a testament to how easy it can be to run quick times. Maggie’s powerplant is a stock long block with bolt-on’s and nitrous. Now, that may not be the way you would do it, but it’s possible. “This truck was a very simple build. With the factory head gasket still in place, we replaced the head bolts with ARP 2000 studs one by one,” said Pachta. “In fact, the only remaining top end parts we used are a set of Maxspool push tubes and Hamilton Cam’s 103-pound valve springs.”
With keeping these trucks cool being so critical, Pachta relies on a set of Flex-A-Lite electric fans, Summit Racing electric water pump, and a Fleece Performance coolant bypass. Also, in an attempt to give Maggie just a little bit more juice, and to probably keep it clean spooled throughout the passes, this truck also utilizes an NXD1000 progressive nitrous controller kit from Nitrous Express.
These engines don’t really like a ton of horsepower and torque, but believe it or not, some trucks miraculously live even after stressful lives. A lot of times we hear of tuners tuning the torque out of these setups because the low-end torque is what kills them. They’re trying to push the power farther out into the RPM range.
The engine is provided with boost by a BD Diesel Performance S480/87/1.0 T4 turbocharger. This turbo hangs off a BD 3-Piece exhaust manifold and is controlled via a 45-MM wastegate and BD’s gate controller and once this boost is created, it is forced through a Mishimoto intercooler. Fuel is distributed to the pair of high-pressure CP3 pumps by a FASS Diesel Fuel Systems 290-GPH lift pump and then onward to a set of S&S Diesel Motorsport 200-percent over fuel injectors.
As we mentioned earlier, the low-end torque kills the engines. One reason I think this engine may be living a lot longer than you would expect is the fact that he’s running a single turbo. The single turbo does make plenty of power and torque but compared to compounds, the low-end isn’t near as violent in my opinion.