Page 2 - cummins

Here at Mishimoto, we know the importance of a good catch can as far as preventative maintenance goes. For most vehicles, installing a catch can means protecting your engine from the silent monster that is blow-by. Blow by can consist of excess oil, fuel, moisture, and pure evil. Engines with direct-injection, like our good friend the Titan XD, are prone to blow-by creeping its way back into the engine through the intake, and caking debris on valves which can be very harmful to an engine over time. To read more in depth about blow-by, check out our complete write up on Blow-By 101.

Stock Titan XD engine bay

Not to worry gentle Titan, we are here to help. Our engineers usually start with a catch can on most project vehicles as we want to protect our newest investment. For the Titan, this proved to be more difficult than we had originally thought. We began as many stories do, with a bracket. Our lead engineer, Dan, decided on a location for our first prototype, then set out to fabricate

We're on a roll with new Titan XD project development! In addition to our plans for improving the factory intake, we have decided to implement an upgrade that is simple and awesome. What we'd like to do here is develop a silicone intake hose that will replace the factory intake tube.

The factory intake tube is a well-designed piece, but it has room for improvement. For instance, we can increase the volume of air that flows through the tube, which will only benefit this 5.0L Cummins turbo diesel. The factory piece will be comparatively restrictive in size when compared with our planned design.

Factory Titan XD intake hose

This would be ideal for those who want to squeeze a bit more power out of their Titan XD, but would rather not replace the entire intake system. Along with the potential for more power output, it will also be a visual upgrade, improving the aesthetics of the engine bay.

Let's take a look at the factory tube.

Factory Titan XD intake hose

Accordion style intake elbow

The

Some exciting things are happening for this new Titan! In addition to the projects already planned, we want to develop a performance intake that will squeeze out a bit more power from this 5.0L V8 Cummins Turbo Diesel. We managed to get an accurate dyno reading with a few adjustments, which we know a few folks have been struggling with on this truck, but more on that later - let's dive into the stock intake!

Stock Nissan Titan air intake

Throttle body from the stock Nissan Titan air intake

Dissection of the Stock System

This turbo inlet is located at the top of the engine. The inside diameter measures right around 3.5 inches; the intake tube has the same inside diameter as well. The airbox grabs its air from inside the fender on the passenger side of the engine bay. Check out the opening in the image below.

Fresh air scoop inlet

That's a pretty sizeable opening, so we will definitely incorporate that into our prototype design for an airbox. Speaking of which, let us take a closer look at

With our first prototype intercooler and shroud assembly complete, it was time to test fit and make necessary changes or adjustments.

Prototype Cummins Intercooler Test Fit

Using the factory mounting brackets, we bolted our components into place.

Mishimoto 6.7 Cummins intercooler prototype installed

The front shroud fits nice and snug against the front bumper and grille. The core is definitely in an ideal position for optimal airflow.

Mishimoto 6.7 Cummins intercooler prototype installed

Our team then worked to install the rear intercooler shroud, which mates with the cooling fan plastic shroud.

Mishimoto 6.7 Cummins intercooler prototype installed

It was here that we ran into a slight fitment issue. The altered core size we designed pushes the shroud farther back toward the engine. Unfortunately, this means our shroud contacted the steering gearbox.

Mishimoto Dodge Ram intercooler prototype installed

A bit of work with the cutoff wheel, and we had space to install the prototype.

Mishimoto

Our Titan XD has been poked and prodded, and the next upgrade we are working on is a DPF-back exhaust. Before we begin development, we like to take a peek at the stock version to determine which upgrades we can make to the design. Our first observation was that this exhaust is, well, plain. Not to worry; our goal is to spice up the design a bit to give this Titan more to show off.

Stock Titan XD Exhaust

Stock Titan XD Exhaust

You will have to excuse the mud coating on the bottom of our XD. All we can say is the team enjoyed "testing" the Titan's suspension maybe a bit too much.

Mishimoto's Nissan Titan XD

Directly under the Titan is a rather large catalytic converter bolted to the diesel particulate filter (DPF). This takes up a large portion of the exhaust system, and we want to leave it intact for emissions reasons.

Stock Titan XD Exhaust

Stock Titan XD Exhaust

The section that we intend to replace is the piping after the DPF that extends from the back of the Titan. We will design a

Our product line for the Dodge Cummins continues to grow each year with the addition of interesting components that help you take your truck to the next level. These include efficient aluminum radiators, durable silicone hose kits, as well as top-notch intercoolers and intercooler piping kits. Our intercooler coverage ranges from 1994 through 2012, but in 2013, Dodge changed the Cummins intercooler design substantially. So once again, we are ready to take a shot at improving the factory system.

Factory Cummins Intercooler

Test vehicle for 6.7L Cummins intercooler development

Like previous generations, the 2013+ models feature an air-to-air intercooler. The primary change in 2013 was the mounting location of this cooler. Previous years saw the intercooler incorporated into the front stack with the radiator, AC condenser, and other coolers.

2nd Generation Cummins intercooler

In 2013+ models, the cooler is mounted below these other heat exchangers and utilizes its own ducting for airflow.