12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

What IS a safe EGT

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Old Dec 3, 2009 | 06:06 PM
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Default What IS a safe EGT

Looking for info on what a safe EGT is, of course there will be different opinions on that, so I'm willing to hear them all, and there's also a grey zone on what's definitely safe, and definite failure point

Buddy of mine said 1300F measured pre-turbo

for the next couple of days my EGT will be measured post turbo until I get home and have a tap to install it in the rear runner.. so until then, I'm going to keep it at 1000F or lower... I think this information should be stickied along with all the other questions that always get asked

cheer and thanks in advance
 
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Old Dec 3, 2009 | 06:09 PM
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No more than 1250 extended. Can run up to 1400 for a short period, but that's it.
 
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Old Dec 3, 2009 | 06:11 PM
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OK, thanks , 1000F post turbo extended sound fair?
 
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Old Dec 3, 2009 | 06:18 PM
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Be a few times where it's going to want to get above that, so anything below 1250 is safe for an extended amount of time.
 
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Old Dec 3, 2009 | 06:55 PM
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i can hit 1600 on my 12v and i know a guy who says he can hit 2000 on his cr his opinion is if its not for too long and if it has enough fuel it fine but i try to stay around 1200 or under ... aluminum melts around 1200 degrees so if its hot enough for long enough to heat the turbo up that much is bad news
 
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Old Dec 3, 2009 | 07:32 PM
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well, took it for a test, up a reasonable hill it hit about 650-700F POST turbo, I'm thinking that is rather low, at light cruise it sits around 400F, which sounds really cold too.. brand new pyro... Defective?
 
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Old Dec 3, 2009 | 08:07 PM
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Originally Posted by Rx7man
well, took it for a test, up a reasonable hill it hit about 650-700F POST turbo, I'm thinking that is rather low, at light cruise it sits around 400F, which sounds really cold too.. brand new pyro... Defective?
Post turbo that sounds like legit numbers...
 
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Old Dec 3, 2009 | 11:12 PM
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Well fella it depends on what you call safe.
 
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Old Dec 3, 2009 | 11:31 PM
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I'd like your opinion on what YOU call safe... then I'll add 400* to it for my uses
 
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Old Dec 4, 2009 | 12:10 AM
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Well let me put it this way cummins rates these engines at 1250 all day long. I have a 1600* gauge and it has been buried more times than id like to admit, but when I tore my engine down last spring it showed NO signs of excessive heat. I am a firm believer in if you don't see it it aint happening. Not to say ill hold it with the needle wrapped for long I do have a few pennies in this powerplant. But I'm just a dumb redneck what do I know.
 
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