Exhaust gas temperature and towing
My 2004 Ram has 325 horse and 600 ft-lb of torque. I find myself bumping 1,300 degrees of EGT before I max my power capability. I like to keep it below 1,300 so I slow down as I have already geared ...
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My 01 I don't go over 1200. I think TDR had an article many years ago and above 1,200 degrees is when you start to run into problems. Big grades I just plug along at 1200 degrees and have no problems. I also idle turbo down to 300-400 degrees before turning it off. Also with exhaust brake I can go from Seattle to Yuma (Via I-5 most of time) and never have to brake on down hills. Trailer approx. 8,500 pounds.
From somewhere..."How Hot Is Too Hot?
Based on our own experience in the sled pulling and drag racing world, we can definitely say that any engine running at 1,800 to 2,000 degrees EGT for more than a second or two should be rebuilt every season and may incur turbocharger, cylinder head, or piston damage during the season. It's just too much to ask a diesel to run at those types of temperatures. For towing, we'd say 1,200 degrees is a safe number, with occasional spikes of up to 1,400 degrees when climbing grades being an acceptable risk. The concept of EGT is analogous to putting something in the oven. You can put your hand in a hot oven for a second or two, and nothing will happen. Leave it in there, and you'll get burned. The same thing happens in a diesel engine. The longer the engine spends at a high EGT, the more likely it is to become damaged.
(edited ...error in temps)
From somewhere..."How Hot Is Too Hot?
Based on our own experience in the sled pulling and drag racing world, we can definitely say that any engine running at 1,800 to 2,000 degrees EGT for more than a second or two should be rebuilt every season and may incur turbocharger, cylinder head, or piston damage during the season. It's just too much to ask a diesel to run at those types of temperatures. For towing, we'd say 1,200 degrees is a safe number, with occasional spikes of up to 1,400 degrees when climbing grades being an acceptable risk. The concept of EGT is analogous to putting something in the oven. You can put your hand in a hot oven for a second or two, and nothing will happen. Leave it in there, and you'll get burned. The same thing happens in a diesel engine. The longer the engine spends at a high EGT, the more likely it is to become damaged.
(edited ...error in temps)
