exhaust temps at shutdown - Ford Powerstroke Diesel Forum
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post #1 of 13 Old 06-15-2012, 03:55 PM Thread Starter
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exhaust temps at shutdown

I was wondering what was a safe exhaust temp to shut truck down at. Also as an update got tunes installed from Brian's truck shop today going to use the 100 HP tune as daily driver tune. Run the 140 a short while man what a difference from stock
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post #2 of 13 Old 06-15-2012, 03:59 PM
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If the probe is mounted in the manifold... before the turbo, I would not shut it down if it was over 500 degrees.


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post #3 of 13 Old 06-15-2012, 04:17 PM
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The shutdown temperature should be BELOW the flash point of the motor oil - my Rotella T6 is 415-degrees. Using a thermocouple at the exhaust manifold provides a reasonable, albeit indirect, measure of the temperature the turboshaft. When the engine is running the nearly frictionless bearings for the turboshaft are cooled by a continuously circulating bath of motor oil (at temperatures in the 200's typically). When the engine is shut down, this film of oil will VAPORIZE if the turboshaft is above the flash point. This COKING will cause the turboshaft to seize eventually or the bearings will fail and the turbo will leak...much the same result eventually. By turning off the AC in the summer, you may assess the turboshaft temperature more accurately (if more uncomfortably).

Absolutely under 500 - but I would encourage under 400.

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post #4 of 13 Old 06-15-2012, 06:38 PM
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i shut mine down between 370-390 or 350 if i have time...

2005 F350 4X4
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post #5 of 13 Old 06-15-2012, 07:13 PM
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Originally Posted by custompainter99 View Post
i shut mine down between 370-390 or 350 if i have time...
me too , if you drive it easy a mile or two before youm park it takes way less time ...

2006 ford f350 xlt cclb
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post #6 of 13 Old 06-15-2012, 08:00 PM
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I let mine cool down to 350-370. i have to take ac out of auto to get it below 400.

Dik
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post #7 of 13 Old 06-16-2012, 05:50 AM
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350 here unless I'm in a hurry then it's 370ish
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post #8 of 13 Old 06-16-2012, 06:44 AM
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I turn off the A/C and wait till it goes to 400deg.

What all did ya get done at BTS?

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post #9 of 13 Old 06-16-2012, 09:04 AM Thread Starter
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I just got custom tunes 4 tunes 75 dollars very friendly would recommend them to anybody. The egr delete, cat delete, hpop fitting, and edge insight cts with Pyro and fuel pressure also flushed coolant system changed to cat elc I did myself. The Turbo I had cleaned at a local shop looked brand new when got it back cost me 150. I have run a couple tanks of fuel so far everything is great.
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post #10 of 13 Old 06-16-2012, 09:09 AM
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Always under 400 for me. I try to get it down below 375 or so most days, but I generally always let it get below 400.

I actually didn't realize that turning off the ac would help it drop faster. I'll start doing that. Thanks for the tip!

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