safe egt temps in a 5.9 07
08-25-2007, 11:16 PM
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safe egt temps in a 5.9 07
I was yondering if anyone here can tell me what the safe readings are for the 07 5.9. dont tell me that anything over 1200 or 1300 is bad because the truck under a load running stock will hit 1500 climbing hills. Even when i downshift. So I would like a good answer and not some guess. The dealer cant even tell me other then that the 6.7 has egt's above 1300. thanks
08-26-2007, 01:02 AM
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Most peolpe will say no more than 1350 but I had my powerstroke at 1800 alot of times holding it not just spiking out and no problems. You can run a 5.9 at 1350 holding all day long and it will be okay. If you are towing and get over 1600 for more than a min. then I would get worried. My staright piped 6.7 runs 1000 normal highway temps, and gets up to 1400 in 3 seconds with wot. Just my $0.02 I will bet the next post says something way different most guys are just scared of blowing amotor because of "rumors"
08-26-2007, 09:27 AM
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No idea what is ideal, have heard under 13-1400 or so but like you mine hits 14-1500 at WOT very quickly and pulling it is a little more than that. It is very brief but hearing all the naysayers warn about over 1400 for any time or duration it worry's me also. Wish I knew or someone could post any factual info as to what we can do other than install water meth or like for cooling.
08-26-2007, 09:54 AM
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I like seeing these kind of posts. I do not have my gauges in yet.but i have been towing with it for going on 10100 miles im not easy on it at all.when i get my gauges I am not changeing the way i drive now.the pryo is more for cool down than anything else. i cant wait to see what temps i can hit. but i am all stock.
08-26-2007, 12:59 PM
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http://education.jlab.org/itselemental/ele013.html
Just remember that the melting point of Aluminum (pistons) is 1220 degrees. Granted you have oil helping to cool it, but how far do you really want to push it. I would guess brief periods (seconds) over 14-1500 won't hurt it. Some guys have even gone higher with no probs. Some have melted their engines too.
Just remember that the melting point of Aluminum (pistons) is 1220 degrees. Granted you have oil helping to cool it, but how far do you really want to push it. I would guess brief periods (seconds) over 14-1500 won't hurt it. Some guys have even gone higher with no probs. Some have melted their engines too.
08-26-2007, 01:05 PM
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I would say that AS LONG as you're stock, those high temps are ok. The ECM will control the engine they way it was made too. The timing is retarded, the pressure isn't too high and durations are more exact.
Once you start playing with performance boxes, all that changes and... YES, you better keep the temps down below 1400 if possible, that or have the correct parts backing it up. It doesn't take much to melt aluminum.
Plus, if you're stock and still under warranty, it's D/C's problem if you melt something.
Once you start playing with performance boxes, all that changes and... YES, you better keep the temps down below 1400 if possible, that or have the correct parts backing it up. It doesn't take much to melt aluminum.
Plus, if you're stock and still under warranty, it's D/C's problem if you melt something.
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08-26-2007, 02:16 PM
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http://education.jlab.org/itselemental/ele013.html
Just remember that the melting point of Aluminum (pistons) is 1220 degrees. Granted you have oil helping to cool it, but how far do you really want to push it. I would guess brief periods (seconds) over 14-1500 won't hurt it. Some guys have even gone higher with no probs. Some have melted their engines too.
Just remember that the melting point of Aluminum (pistons) is 1220 degrees. Granted you have oil helping to cool it, but how far do you really want to push it. I would guess brief periods (seconds) over 14-1500 won't hurt it. Some guys have even gone higher with no probs. Some have melted their engines too.
Tony
08-26-2007, 03:16 PM
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I agree these trucks run hot, but 1800 is asking for a meltdown. I personally keep it 1250-1300 max, occasional spike to 1400-1500. Again, if you didn't want to be told that "anything over 1200 or 1300 is bad because the truck under a load running stock will hit 1500 climbing hills", then why are you bothering to ask? Just hammer it down, find out for yourself.
08-26-2007, 06:28 PM
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I have my Commander set to defuel at 1350*. Can't give a quantitative answer why, but that's where I'm comfortable. On my way home from Pismo Beach this past Friday I had the gauge pegged at 1350* for a couple minutes while climbing a particular grade.
08-27-2007, 01:40 AM
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I agree these trucks run hot, but 1800 is asking for a meltdown. I personally keep it 1250-1300 max, occasional spike to 1400-1500. Again, if you didn't want to be told that "anything over 1200 or 1300 is bad because the truck under a load running stock will hit 1500 climbing hills", then why are you bothering to ask? Just hammer it down, find out for yourself.
08-27-2007, 08:46 AM
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I would say that AS LONG as you're stock, those high temps are ok. The ECM will control the engine they way it was made too. The timing is retarded, the pressure isn't too high and durations are more exact.
Once you start playing with performance boxes, all that changes and... YES, you better keep the temps down below 1400 if possible, that or have the correct parts backing it up. It doesn't take much to melt aluminum.
Plus, if you're stock and still under warranty, it's D/C's problem if you melt something.
Once you start playing with performance boxes, all that changes and... YES, you better keep the temps down below 1400 if possible, that or have the correct parts backing it up. It doesn't take much to melt aluminum.
Plus, if you're stock and still under warranty, it's D/C's problem if you melt something.
Your engine didn't melt down because you hit 1600* at the track for a few seconds. The damage was caused by the defective TST that is (now) known for melting pistons on '06.5+ trucks.
09-05-2007, 01:59 AM
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just had the gauges in for a few days and on a 40mph role on in 6th i hit a max of 1400-1450, only changes so far are an AEM Workhorse HD intake and an ATS manifold. i was pretty shocked at that number by how much everyone likes to stay in the 1350-1500* range as a max when throwing more power at it.