Cummins diesel
Hello everyone. I am wondering if you might have a recommendation for a good diesel tuner here in the Southern California area? I have a American Tradition with the 5.9 cummins in it and it lacks ...
Forum Discussion
Cummins EGT
Pyrometer, 5.9-Liter Engine Guidelines
As a guideline, do not exceed 1000? – 1050?F with the pyrometer in a post turbo location such as the exhaust elbow or exhaust brake elbow.
If you installed the pyrometer pre-turbo, in the exhaust manifold, do not exceed 1250? – 1300?F. You will find the EGTs will parallel the position of your accelerator pedal. A typical 60 mph, halfthrottle
EGT number is 600? – 700?F if the probe location is prior to the turbocharger. Readings are usually lower if the probe is located after the turbocharger.
Pyrometer, 6.7-Liter Engine Guideline
We have found that the 6.7-liter engine’s exhaust is hotter than we’ve ever seen. Seldom do we see the temperature below 500°. For example, at cruise speed the 5.9-liter was 600°; now with the
6.7-liter engine 900° is the norm. I’ve seen the regeneration cycle keep the EGT at 1200° (with the previous 5.9-liter a 1200° reading would go hand-in-hand with lots of boost), with 0psi boost. So,
hot is the way the 6.7 operates.
Be advised that the registered temperature reading will only be 250? – 350?F (ambient air temperature and location of the sensor are the reasons for the variance) at initial start-up and idle. It takes
engine load to make the EGT escalate.
Pyrometer, 5.9-Liter Engine Guidelines
As a guideline, do not exceed 1000? – 1050?F with the pyrometer in a post turbo location such as the exhaust elbow or exhaust brake elbow.
If you installed the pyrometer pre-turbo, in the exhaust manifold, do not exceed 1250? – 1300?F. You will find the EGTs will parallel the position of your accelerator pedal. A typical 60 mph, halfthrottle
EGT number is 600? – 700?F if the probe location is prior to the turbocharger. Readings are usually lower if the probe is located after the turbocharger.
Pyrometer, 6.7-Liter Engine Guideline
We have found that the 6.7-liter engine’s exhaust is hotter than we’ve ever seen. Seldom do we see the temperature below 500°. For example, at cruise speed the 5.9-liter was 600°; now with the
6.7-liter engine 900° is the norm. I’ve seen the regeneration cycle keep the EGT at 1200° (with the previous 5.9-liter a 1200° reading would go hand-in-hand with lots of boost), with 0psi boost. So,
hot is the way the 6.7 operates.
Be advised that the registered temperature reading will only be 250? – 350?F (ambient air temperature and location of the sensor are the reasons for the variance) at initial start-up and idle. It takes
engine load to make the EGT escalate.
