EGT pre-turbo temperatures?

[LPChristensen]

It occurred to me the other day while I was monitoring my EGT while hauling my rather heavy camper that I was not real sure at what point I should start to be concerned. My gage goes to 1,500 degrees and at times while hauling or pulling I have seen my temperature rise to 1,100 or 1,200 degrees for a short period of time. At what point do you guys start shutting it down to reduce the EGT? A friend of mine with a 04 Ford one ton Power Stroke was told by his dealer that anything over 1,000 degrees was in the danger zone. Somehow this does not seem right. Thanks for you assistance.

 

[TX Gooseneck]

If 1000 degrees is the danger zone you would be lifting none stop. I just installed my EGT today and top of 6th on a long pull the most I could muster was 1375*

I believe any long sustained periods over 1400* can be trouble.

 

[ThomasLawrence]

No more than 1250°F sustained, and no more than 1400°F for brief periods (that's measured in seconds, not minutes).



-Tom

 

[J.Davy]

I have heard from a few people that Cummins recommends no more than 1450 preturbo on the third gens only. Mark at tst products said they ran a truck on the dyno at 1500 preturbo for thirty minutes with no adverse effects other then the turbo discharge hose getting so hot it blew up. The reason for the high temps has to do with the multiple injection events and more so on the newest trucks the final shot of fuel was to keep the cat hot. My 2005 hit 1400 empty when it was stock.

 

[LightmanE300]

With my truck stock and empty I can't get it to even come close to 1000. With 9k lbs behind it doing 5% grades floored, the best I could muster is abotu 1050/1100 preturbo. It's crazy how those 600 engines run hotter! With 100hp of box dialed up, I can hit 1350 or so for a second, and then it drops to about 1275-1300 sustained. I have always heard 1250 was the sustained limit, but it seems folks are going higher with 3rd gens.



JDavy - I asked cummins directly and they gave me a pretty vague answer. They said do not exceed 900-1100 degrees preturbo. Either way 1100 was the highest number they mentioned.

 

[CLAYTON]

I run it at 1350 up a grade with a load behind the truck. Drag racing I have kissed 1600 for a brief second. Time for a bigger turbo.

 

[TX Gooseneck]

I was romping on mine this morning, and in 6th, going from 50mph to 80mph I was banging 1250*

 

[TCluff]

i have never sustained temps of 1300 for more than 1/2 mile at 65+, but i cant tell you how many times it flew way over the 1600 pin for a second or 3, now with the twins, tst twins program and the ts ramifier it might hit 1500 for a second and then drops to 1200 when the boost comes on, this is measured in the #5 ex port

 

[jnelson]

Pulling hills in Norther Colorado pulling my 36ft gn with 11,000 lbs of pipe I got up to 1500+ for short periods. That was pre-turbo. Just getting up to speed with my g/n empty I can get up to 1200 rather easy. No problems yet. .

 

[J.Davy]

I know that 1450 seems way high but Mark works right beside the Cummins boys so I took his word for it ,Keith from Diesel Dynamics also told me that Cummins told him 1450. It is always up to you the owner of the truck,in my opinion damage is totally time dependandant. Some of these guys have also stated they have run as high as 2200 degrees for very short runs with no problems. But personally I think it will take some life out of the engine,but maybe not.