EGT's ?

aceltx · Nov 3, 2015

Can anyone explain to me EGT's in depth,please!! I know 1200-1300f sustained is the max you should allow it to get, the cooler the better (obviously)no matter what. But what is normal????
When my truck is first started it idles 200-300f, at 68mph 1910rpm my egts are at 520f. Does that seem normal. What is a good range to always stayin in?

Northwoods2002 · Nov 3, 2015

Normal, never wasn't to exceed 1200 for extended periods of time.

aceltx · Nov 3, 2015

Are you saying "normal" is not to exceed 1200 extended???

Sterling B. · Nov 3, 2015

I think I'm right around 700* cruising 70 on Jody's 80 econ tune. (285/75R16 and 3.73 rear)

Arisley · Nov 4, 2015

Correct, now if you start going up hill at 70, the EGT's will climb a bit, If you start going down, they will drop a bit. The more your foot is in it, the higher they go.

On a motor up to operating temps, it will idle about 450º to 550º.

Justin@DP-Tuner · Nov 4, 2015

As explained by others here, there really is no "normal" EGT. It will change constantly depending on what your foot is doing, what RPM you are at, if you are going up/down hill, etc. The general rule of thumb is to limit it at 1250*. Short periods of a higher temperature than that are okay, but you do not want to sustain those kinds of temps.

For me... At idle, I am normally around 300-400*. Cruising @ 60mph I am normally around 600-700*.

aceltx · Nov 6, 2015

Ok great thanks. I know it is always changing but i remember someone telling me 900 was high, and when i get on the throttle to accelerate quick you cant keep it under 800-900.

Arisley · Nov 6, 2015

Nope, sure can't. It takes heat to make the turbo work. You burn fuel, things get hot.

mandkole · Nov 7, 2015

aceltx said:
Ok great thanks. I know it is always changing but i remember someone telling me 900 was high, and when i get on the throttle to accelerate quick you cant keep it under 800-900.

900 is high if your sensor is in the downpipe.. a lot of guys used to run them there and it was the old school location on big trucks. As said, 1250 is the known limit when the sensor is in the manifold/uppipe position.