Thread: EGT max temp

Lets say in a analog gauge where would running be, yellow, and red line melt down? Like 450 degrees then 700 then 1350 or ????? What should anyone expect during towing EGT wise no exact #'s just rough percent in rise?

Yellow 1200, Red 1500. These are slightly conservative.

Cycling is more stressful than the steady temp. You could run at 1500 all day, and that would be as stressful as cycling between 600 and 1200 repeatedly. This is why it is better to stay under 1200. The thermal cycling stress is much less when peak temp is less.

All assumes you are measuring turbine inlet temp for EGT.

I set mine at 1,400F for yellow and 1,500F red line. The red line is right there. Pistons start to get a little soft at around 1,550.

The Edge plugs in to the OBD port under the dash and displays up to 4 gauges. One of the them you install the probe EGT gauge in the manifold right before the exhaust turns up to the turbo. The computer shows 2 additional EGT gauges! EGT1 seems to show a EGT at the turbo as it seems to slowly follow the probe EGT usually its lower by 40-60 degree's. It also after driving stays a lot more steady than the probe. The probe can be manipulated with one rev even after a drive on the freeway. The EGT2 seems to be the DPF. When I had all 3 gauges displayed EGT2 (the display shows EGT EGT1 EGT2) suddenly showed a flashing "R" and the temp maintained 900-1000 for about 7 min on the freeway in slow traffic. The other 2 gauges showed 800-1000 but seem to jump around more with the EGT probe getting cooler quicker.

So far the Edge has proven to be a good product and a great set of almost limitless gauges for troubleshooting tuning or like me just want to know what the he@# is going on in there while I tow 13K.

TeamGFishing

Originally Posted by killerbee

Yellow 1200, Red 1500. These are slightly conservative.

Cycling is more stressful than the steady temp. You could run at 1500 all day, and that would be as stressful as cycling between 600 and 1200 repeatedly. This is why it is better to stay under 1200. The thermal cycling stress is much less when peak temp is less.

All assumes you are measuring turbine inlet temp for EGT.

My gauges clearly showed 1000 degree's during Regen

I read on a GM site once that 1100 sustained and 1350 max for EGT. IMHO once you push past 1000 maybe 1100 on the pyrometer you're working it to hard and it's time to come down one gear.