04.5 EGT cooling

[OT-OF-HERE!!]

Would it be logical to think that with the larger turbo on the 600 and the increased cooling of the intercooler that given the same enhancements for power upgrades that the 600 should run lower egts?

 

[jwilliams3]

Yes, unless the programming has made it run hotter.



--Justin

 

[DPelletier]

I would think that the post-injection event may raise EGT's. Don't know for sure, but I wouldn't rely on hardware changes to indicate lower EGT's (as Justin has pointed out).



Dave

 

[ceaman]

My EGT's on my stock 600 are about 400 degrees hotter than my stock 555 was. My peak EGT on the 04. 5 has been 1475ºF (after turbo) and I was told by the dealer, and STAR this is normal and ok ..... just run it.

 

[OT-OF-HERE!!]

Originally posted by ceaman

My EGT's on my stock 600 are about 400 degrees hotter than my stock 555 was. My peak EGT on the 04. 5 has been 1475ºF (after turbo) and I was told by the dealer, and STAR this is normal and ok ..... just run it.

1475 degrees and that was stock?? I assume WOT.

 

[RankRam]

That has got to be pre-turbo!

 

[nickleinonen]

Originally posted by RankRam

That has got to be pre-turbo!

i'd sure hope so, but...

My peak EGT on the 04. 5 has been 1475ºF (after turbo)

 

[XcumminsX]

Maybe these motors can handle higher temps? Maybe someone should call up cummins and ask...



Nick

 

[KBertetto]

The hottest I had mine up to was 1450 degrees, towing 10k up some pretty extreme grades. My pyro is PRE Turbo.

 

[jimnance]

Originally posted by XcumminsX

Maybe these motors can handle higher temps? Maybe someone should call up cummins and ask...



Nick

The new 600's have a new exhaust valve material which is more resistant to heat than earlier engines. The pistons also recieve extra cooling by way of the oil system. This should help prevent the piston from melting prematurely.



I don't think the turbo has ever been the limiting factor, I believe that the top end of the engine has been the issue. I have a Garrett Turbo on my turbocharged piston engine aircraft and it is limited to 1650F.

 

[OT-OF-HERE!!]

Originally posted by XcumminsX

Maybe these motors can handle higher temps? Maybe someone should call up cummins and ask...



Nick

Took your suggestion and called Gateway Cummins here in ST. L. They said they have no info on these Dodge Cummins. They can rebuild only. They have nothing on specs, (egt) can't change or update software or any of that. He said Dodge purchases these engines w/no warranty and applies their own.

 

[mattymac]

I dont know facts on anything cept' for the 600. when I kept bugging TST for my box on the 600 Greg said when they first hooked it up and did some runs they said that it WAS cooler than the 555's they had been testing. Up till about 4/4 my truck runs the same temp as stock with air mods before and after TST (did intake and exh. first before TST).

 

[OT-OF-HERE!!]

Originally posted by mattymac

I dont know facts on anything cept' for the 600. when I kept bugging TST for my box on the 600 Greg said when they first hooked it up and did some runs they said that it WAS cooler than the 555's they had been testing. Up till about 4/4 my truck runs the same temp as stock with air mods before and after TST (did intake and exh. first before TST).

That's great news!! That's exactly where I was going on this. I thought it was the case but it's nice to have validation. Tks.

 

[GCrowell]

EGT Pre/Post

Well, I am getting ready to put gages on my 04. 5 and sent Cummins an email as follows:



Powermaster

Customer Assistance Center

Cummins, Inc.

Columbus, Indiana, USA





Free QuickServe Online for Consumers at - http://quickserve.cummins.com





Details:





This question concerns . The application is being used in a dodge



I am a member and have been reading the TDR forums for quite some time now and still have no clear answer to the question of where to locate the EGT probe.

From your information for the Jake brake, it appears you condone or even recommend post turbo. Can you provide a recommendation on which location, pre or post turbo, is the best and why? I have a 04. 5 Dodge 3500 dually with 4:10 rear, 48RE trany and tow about 11k, (5th wheel) about 50% of the time and want to protect both the engine during towing and turbo during shutdown. So, can you provide a recommendation on the best location for the EGT monitoring probe as well as the temps I should expect and/or not exceed?



Thanks for building such a fine piece of machinery. It is a real joy to own a Cummins.



This is what I received in reply a couple days later.





Summary: EGT probe location



Solution:



Thanks for your Email message.



Under full load, most Cummins engines produce exhaust temperatures in the cylinder about 1300 degF or so, on the engine dynomometer. Typically, over-the-road trucks measure EGT from two to six inches after the turbocharger in the exhaust pipe and at that point the EGT temp will be in the 700 to 900 degF range, under 'full load'.



In the Dodge Ram application, it is not likely the engine could be ran at 'full load' operation in the chassis but if it could or if overfueled, the exhaust EGT ahead of the turbocharger should not exceed the 900 to 1100 degF range. The exact temperature will vary on different applications with different pyrometers and the location of the temperature probe.



The pyrometer measures exhaust temperature and the probe is usually mounted about 2 to 6 inches from the turbo outlet (after the turbo) and in that area the exhaust temperature under 'full load' conditions should be in the 700 to 900 degF range. The pyrometer probe could be installed ahead of the turbo for maximum exhaust temperature out of the cylinders (900 to 1100 degF), however, if the probe ever fails it goes directly into the turbocharger and will likely cause a catastrophic failure of the turbocharger.



We thank you for your interest in Cummins products. Please let us know if you need assistance in locating the nearest Cummins-authorized Dealer or Distributor Service Provider. For assistance in locating a Service Provider, feel free to use Cummins North America Dealer Locator, which can be found on Cummins website:

http://www.cummins.com/service_locator/index.cfm



Please let us know if you have other questions and if away from your computer or have a time-critical request that needs more urgent attention, feel free to call us toll-free (from North America) at 1-800-DIESELS (343-7357).



Email direct: -- email address removed --



Regards,

--



So, the temps some of you guys are seeing far exceed those Cummins gave to me in the above email. Either they are being very conservative or some of you guys are really pushing the metallurgy to the limits or perhaps the pyro type and location really makes a huge difference. I still don't feel like I have the answer as to what temps I should not exceed. I am leaning towards post turbo since I am running stock and want to watch the shutdown temps.





George

 

[DPelletier]

George,

The research I've done suggests that 1250 deg. is the max temp that you should run SUSTAINED on a pre-turbo pyro. Consensus seems to be that going higher for a couple of seconds or so generally is tolerated, but I have no intention of doing this. I believe the e-mail from Cummins is overly cautious, but worse, they seem to be wrong in the assertion that we can't get to "full load" operation in the chassis. It would seem that we can since many are reporting much higher EGT's than 1100 on stock engines.

As far as EGT's and 600's go, I've now heard conflicting reports of whether they run cooler or hotter than previous engine configurations. There is little doubt, in my mind, that the post injection event and increased fueling are cause for higher EGT's so the question is simply whether or not the hardware changes made more than compensate for these increases or not. The change in the exhaust valve material suggests perhaps not.



Dave

 

[EEngel]

High temps in the 600

With WOT I was able to get into the 1200's pretty easy. With the VA on 50% it was a little hotter. With the VA on 100% I hit the 1500's.



Definitly won't be doning that real often.