Quote:
Originally Posted by reevs
Is it ok to run 1200 degrees for a period of 2 minutes or is this to hot?
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The International and Ford engineers that developed the 7.3L PowerStroke engine told us you can run all day at 1,200°
pre-turbo EGT, but 1,250° is the red line. Don't let it go over 1,250° for more than a few seconds.
The members of TheDieselStop had a national rally at the Ford Kentucky Truck Plant (KTP), and part of the rally was a bull session with the International and Ford PowerStroke team of engineers. So we heard it from the horse's mouth.
Of course, some folks don't care what Mama don't allow, they'll play their banjo anyhow. So some gamblers use 1,300° as their red line. But of course if they melt a piston they probably won't come back here and brag about it. So I haven't heard of any disasters of running a bit over the 1,250° redline.
With my 60-tow tune and grossing 16k, I have to worry about exceeding 1,250° EGT only for very long grades over about 7 percent and going faster than about 60 MPH. Under those conditions, I'll be downshifted into direct drive and turning about 2,600 RPM. If the EGT gets up over 1,200°, then the cure is to back out of the go pedal just a hair to maintain between 1,200° and 1,250°.
I can't imagine exceeding 1,250° with the 40-tow tune, but I guess if your trailer is heavier than mine,then you could have that challenge. The only time I've use 40-tow (as a test to be sure it worked) , I was grossing only about 13k, so it didn't even get near 1,200° as I crossed the Rockies. (I didn't order 40-tow, but Jody threw it in when he flashed my Evo with DP-tuner tunes.)
