EGT Temp

[KeithLittle]

What is the normal operating EGT range for 2005's

 

[jnelson]

Post turbo running down the road empty anywhere from 600-750*

hard excelleration with a box post turbo 1000*- 1100*

Towing heavy - acceleartion to highway speeds up to 1200* post turbo and 700 to 900* towing heavy if your not pushing any wind.



You can add 200-300* pre turbo.



The hottest I have had my truck in stock form was towing 19,000 lbs (pipe and gooseneck) up 287 from Ft. Collins to Larimie WY was 1550* for a short period. I am now at 94,000 miles and she is still running great.

 

[LesStallings]

1,200° post turbo !!!!



Ouch!



1,550° Death wish???

 

[Edgemann55]

My 2005 is stock except for MBRP muffler. I run my EGT probe pre turbo and get 600 to 650* at 70mph. Pushing a grade with 8000lbs behind her have hit 1300. But most of the time 1000 to 1200* in those situations.

 

[Hokey]

Running at 65 - 75mph empty 650 to 750 pre-turbo.

 

[MMeier]

1,200° post turbo !!!!



Ouch!



1,550° Death wish???

Thats what I was thinking!!

 

[JHardwick]

S-A-M-O-K-I-N !!!!!!!!!



Don't foreget, there is no 200-300* rule pre/post, it's exponential.

 

[TX Gooseneck]

PRE-BOX: I would see 550-700 cruising depending on terrain, wind, speed, etc.

The hottest I was able to get it was 1375* doing 107 into a headwind.



Post box: Cruising is very similar, maybe 50* warmer. I'll see 1100-1200 pretty easy under hard acceleration and if I do a 6th gear windout I'll get close to 1500*



This is all pre-turbo.



BTW, I love that drive up 287 going past Red Feather Lake. m-u-s-t - b-u-y - l-a-n-d

 

[TX Gooseneck]

OK, on the 130hp setting, I shot past 1600* pre-turbo today

 

[CAT 385]

1450 stock up hesperus hill w/ no trailer



can easily see 1500 with the xzt



changing to a free flow muff on fri

 

[Elite1]

let us know which muffler you go with, how it sounds & if it helps the egt's. I would like to change out my stock muffler as well...

 

[CAT 385]

I went with an allied muffler and a torque tube from afe. They helped the egt issue about 75 to 100 degrees

 

[jnelson]

The 1550* I hit going up 287 was when my probe was pre turbo. Since I put the ATS manifold in I moved it to post turbo as this is where Cummins takes all their egt readings. If you talk to Cummins they can not give you any pre-turbo numbers.



With a tall load and a good head wind I can run 850-1000* for hours on end. That woud be 1150-1300 Pre turbo. I put 433,000 miles on my 2001 CTD doing the same thing. If this 600 motor can't hack it, I guess my next truck will be a Duramax.

 

[JHardwick]

With a tall load and a good head wind I can run 850-1000* for hours on end. That woud be 1150-1300 Pre turbo.

*scratching head* How do you know that?

 

[jnelson]

Well Mr. Hardwick if you go over to TurboChem on Leopard street in corpus Christi and load 8 pallets of sack material, around 10,000 pounds, and take it down to McCooK TX you will also know.

 

[JHardwick]

Well Mr. Hardwick if you go over to TurboChem on Leopard street in corpus Christi and load 8 pallets of sack material, around 10,000 pounds, and take it down to McCooK TX you will also know.

no no no, I've been loaded way heavier than that ... ... ... ... ... how do you know that 850-1000* post turbo is 1150-1300* pre turbo?



unloaded cruising, there may only be 50* difference pre/post ... ... ... ... ... . heavy load, lots of fuel, there may be 500* difference pre/post.

 

[jnelson]

For about 50,000 miles I had my EGT probe pre turbo.

After I installed a the new manifold I moved it post turbo.



I have had a lot of seat time with both. 535,000+ miles since summer of 2000. 433,000 on my 01 and 102,000 on my 04. 5. Thats how I know.

 

[JHardwick]

For about 50,000 miles I had my EGT probe pre turbo.

After I installed a the new manifold I moved it post turbo.



I have had a lot of seat time with both. 535,000+ miles since summer of 2000. 433,000 on my 01 and 102,000 on my 04. 5. Thats how I know.

Thats how you know what?

 

[JHardwick]

You can add 200-300* pre turbo.

This is the most simple minded thing I've ever heard. Ask DLeno, it's exponential. There is no reason for a member to still believe that simple ****. The data is here, believe it or not, just stop the stupid rumors :-laf

 

[Dieselnerd]

JHardwick, this is interesting since I am stock and put my EGT probe post turbo to monitor cooldown temps. Where is this temperature data you are talking about? Do you have a link or reference? I have heard that Cummins says not to exceed 1100 post turbo but I have not seen that in any official document either. Why is the 3rd gen different than the second where the 300 degree "rule of thumb" was pretty accurate? What's so different about the newer engine that causes this wide variation in pre-post EGT? Not flaming, just trying to find out more. I understand the 12 valves very well but I'm a newbie on the new common rail engine.