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Old 05-09-2011, 08:36 AM
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Real Towing Temps

Well finally got out this weekend and took the 5th wheel for quick trip. We did 300 miles round trip. Elevation started at 5000ft and ended at 10k. Lets just say that lots of long pulls a mile+ up grade. The truck worked hard.
Numbers:
5th wheel weight about 10k or less
Temps out side were 50 to 83
Max speed limit 75
Truck .. See sig
Max temp I was pushing the motor hard 238 on EOT & ECT running 3100rpm.
Average pulls were 220 on EOT and ECT running 2100rpm-2500rpm
Best pull speed limit 55 kept with traffic 200 on EOT & ECT running 1800rpm
Trans never went about 170
On level grade EOT and ECT 200 give or take a few running about 2100rpm.
I think the truck performed very well but I concerned when we get to the hot part of summer. What do you think?
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Old 05-09-2011, 10:13 AM
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Looks great to me.
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Old 05-09-2011, 11:07 AM
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Originally Posted by bfrank81 View Post
Looks great to me.
Thanks...

Can anyone tell me what are the MAX TEMPS the 6.0 can handle?
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Old 05-09-2011, 11:23 AM
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Here you go I can't take credit for this I think BISMIC posted this in another forum. Its attached

temp doc.txt
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Old 05-09-2011, 11:34 AM
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Originally Posted by FordWake View Post
Here you go I can't take credit for this I think BISMIC posted this in another forum. Its attached

Attachment 25487
Thanks for the info!
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Old 05-09-2011, 02:32 PM
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I looked at the max numbers in the temp doc.txt and I would say according to it I was running it to hard?
What kind of numbers are you all getting when pulling up a long grade?
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Old 05-09-2011, 04:23 PM
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Seems a little high but nothing extreme. Oil cooler probably a little clogged
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Old 05-09-2011, 05:04 PM
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I tow a 15K RV all the time and use the Max Energy Programer and the Temperatures never go over 214F. If the truck gets to 214 its a big long hill, I usualy let off on the accelerator at 205F and downdshift because any higher then 207F the fan realy robs the engine of available power. I usualy go up a long 6 to 8 deg hills on 4th gear high and can gain on speed without heating up at 55MPH.

I just did a long hill the other week and beat a Ram that was towing the same RV unit as mine. He was on my tail at the bottom and very small in my mirror when I crest the hill. My ECT never went over 205F.

I guess the standard tranny is a big advantage as I can control the RPM and gears the way I like them.
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Old 05-09-2011, 08:05 PM
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Thanks for the info!
x2, very handy!
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Old 05-10-2011, 06:09 AM
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Engine RPM's are your friend and slow down a bit when pulling the grades. While it is important to have airflow across your radiator, your engine makes a ton more heat when you have a heavy foot. Here is a link to a thread I started and some temps from a couple of my trips pulling a 12k 5th wheel. LINK to thread

Quote:
BEFORE (DJ Aggressive Tow)
GCVW=18k lbs
Ambient air temp=75*
Vehicle speed was 75mph
Tranny temp was 175*; 185* peak
EGT's were 1200*; 1350* peak
EOT's were 216*; 239* peak
ECT's were 209*; 225* peak
ICP was 2141psi; 4061psi peak

AFTER (Gearhead 8k Tow)
GCVW=20k lbs
Ambient air temp=65*
Vehicle speed was 75mph
Tranny temp was 165*; 185* peak
EGT's were 1050*; 1300* peak
EOT's were 202*; 225* peak
ECT's were 203*; 223* peak
ICP was 1621psi; 4041psi peak
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