MiniC

I just got a new 05, 2500, 4x4, quad cab. It has the 6 speed. I have a stage III Dr Performance chip, and straight piped exhaust. I just put my gauges on, Boost is around 35-40psi, and the EGT's unloaded on a run up to 95 about peg my 1500 degree EGT gauge. I am thinking the Dr performance is the culprit. I am going to try unplugging it, but its just to dam fun! FWIW Im getting around 20-22mpg around town with this configuration.

Superduty

the 04+ engines run hotter because they have a 3rd injection event. The exhaust temp limits are higher for these engines.

MiniC

Yeah, I had read that but they still seem hotter then others. I am leaving in about 10mins to drive about 2500 miles, with about a 5000lb load. I will see how they do on the trip. Thanks for the reply!

underwoodtransp

mine actually went down when I installed my xzt box now I run 900-1000 deg post. Which I think is really good considering the heavy loads my truck sees every day.

RAPTOR01

the 03 and newer all have 3 injection events FYI

Geico266

The melting point of aluminium (1,220.6 F) did not change with the "05" trucks guys. 1,500+ F is just way too hot. You are doing damage at these temperatures. Weakening the tops of the pistons, and melting the turbo fan edges everytime you hit those temps. Catastrophic failure at these temps is not an option.

underwoodtransp

we already have 4"

Geico266

Unless you are looking to blow these engines (at your expense) I would start figuring out how to lower the EGT's.

DR3500

NEGATIVE, the '03 & '04's only have two injection events. the '04.5 and newer have 3 events.

Geico266

All CTD's have aluminum pistons that melt at 1,220.6F. EGT's can safely be run sustained at 1200-1300 F. This is because the piston is cooled as fuel and air enter on the next intake stroke. But at 1,500 F the turbo and pistons are in danger of MELTING! Anything over that and you are at risk for a major (expensive) problem. Trust me, your warranty WILL be void, and it should. You are on your own and don't go crying to the dealer if you blow your engine. Operating any engine outside the design perameters is risky at best, foolish to say the least.

http://www.bankspower.com/Tech_whyegt.cfm

rmalone

Not all aluminum is created equal, and there is a difference between a quick hot run and sustained temps. I agree I would not tow or sustain anything over 1300deg, but I dont think anything of a 8 second 1500deg romp. I have seen many threads of guys with stock third gens that install an egt gauge and find out they have been sustaining 1300-1400deg without problem.

Geico266

BY all means never let facts get in the way of unsubstantiated internet postings.

PourinDiesel

The pistons are manufactured from an Aluminum alloy that has a higher melt point.

TAS05CTD610

I too have an EGT gauge and when it it's 1300 I watch it very closely, if it goes any higher I try to down shift of let up a bit.

My question is if you have a bone stock truck and your towing up a hill and you get over that temp and melt a piston, turbo, ect, would that be covered under warrentie? since in reality there is nothing to tell you, you were getting that hot? Like somebody said with the autos, if they get over 265 they down shift to cool them off. Will our motors do something if the temps get to hot? Just a question as if you have no idea how hot it's getting towing, how can they void the warrenty for you not being able to see it. This is really just a question, not yelling or ranting, just currious.

tankeryanker

Maybe it will defuel after sustained too hot of egt's. I can't imagine that these 600 motors wouldn't have some kind of built in saftey paremeter for a stock truck. Look how maney people who are towing heavy in the mts. & don't have a clue. I was surpised after I got my gauges in how much hotter my 05 runs towing 12,000lbs over my 01.