5.9 Cummins Exhaust Manifolds Are Here From aFe Power!

Often times when we are building or fabricating parts, we try and make things as rigid as possible. We don’t want them to move. The truth of the matter is that nothing is really rigid. At the molecular level, unless it is 0 Kevin (K), things are moving around. As you heat them up (above 0 K) they move more and more.

The movement generally isn’t noticeable. It is only when we look through very powerful instrumentation that we may notice it. If everything stays around the same temperature, then we can assume that things don’t move, but what happens when you take something that is say room temperature (or ambient temperature) and raise it to 1,000 degrees or 1,300 degrees? That metal will heat up and expand. The ability for metal to move, expand, vibrations and not crack is called ductility. In some applications it is extremely important while in others it may not be.

One very important role where ductility is crucial is in exhaust manifolds. Recently, aFe Power released a new ductile iron exhaust manifold for the 2003 to 2007 5.9L Cummins powered Dodge Ram pickups. These exhaust manifolds are designed with thick ¼” flanges to help increase the strength and eliminate warping or cracking like the factory exhaust manifolds will do over time.

In addition to the thick flanges, aFe Power, also, designed ribs that run between the flanges to help keep everything a little more rigid and aligned.

These exhaust manifolds feature matched ports and a merged runner design to reduce back (or drive) pressure and are designed with a T3 flange. In addition, they designed two bosses in the manifold to make it easy to run gauges (whether running an EGT or Drive pressure gauge).

With a name like advanced FLOW engineering, you can be sure there are performance gains to be had. While we haven’t been able to test one of these manifolds yet, they do report increased throttle response, reduced spool up and more performance.

To find out more, visit their site today!