[moovet]

O.K. first I must say sorry to okfordteck for calling him a troll...I guess you could be both a tech and troll but that does not seem to be the case.I want to know;
is this just 05?
what are the symptoms too look for?
Do trucks with melted pistons have bad head gaskets too?(might make sense.)
You said perhaps leaky injectors and other say fords cut off is 5%fuel in the oil, perhaps a new cut off is in order?
I am sure others have better quesions but I would like too prevent this if it is in my controll.. Welcome...to the list...
j.schall /ubbthreads/images/graemlins/smirk.gif

 

[OKFORDTECH]

From the few trucks that we have had in here one was a non modified excursion. It had no chip or program and ran half way descent except for no power. Just went down one day on customer and hole number 3 was missing. After a call to technical hotline we where told that for some unknown reason that #3 #5 where melting...thats all that i know...everything else like leaking injectors and stuck vgt solenoids is purely speculation. Make sure you keep your maintenece up and get a reprogram when u can. I really didnt mean to piss in anybodys post toasties on that first post of mine...Happy truckin dude and good luck

 

[noa1794]

Sorry I called you a troll. It was the 6.4L CAT that did it. It is going to be a Navistar 6.0L bored/stroked out to 6.4L with a 2nd turbo for low end grunt. I did not think a true Ford tech could be so wildly wrong or misinformed so I assumed you were a troll. I believe the CAT will be an option in some of the heavier trucks. I do not know what displacement it is.

Post Toasties? I prefer Kellogg's Raison Bran, unsalted.

 

[49369]

Boy this is getting interesting. I dont know what to believe. Although a guy working at the Kentucky plant said it would be an international motor not a cat. This piston isssue is puzzling. Why would they melt. An why just those particular two. More questions then answers.

 

[moovet]

Interesting for me is the history or discovery channal, this is down right neurotic... ok ford docs set me straight..
I thought the whole reason we diesel people have egt gauges was to prevent piston and turbo melting??? Is this still the preventative action monitering and keeping egt's in check??? Or can 3 & 5 just spontaneously combust??? Lack of power with elevated egts would deffinately worry me..Iam guessing one or two cylinders could be hyperthermic and not elevate all gas temperature. What side is 3 & 5 (left) and would that be the side to put the probe??? should be more sensitive to the problem??
Thanks in advance,
j.schall

 

[04crew]

melting down a piston in a diesel is neally inpossibel, but breaking a piston is not. most big trucks have steel tops cast into the pistons. some yaers ago a lot of pistons were cast iron. the egt is to moniter turbo temps. they will go critical way before piston temps will. this is why the real diesel engines in big trucks have the egt installed either emidiataly before the turbo or at its exhaust. besides over fueling souped up 6.0s, the biggest cause in hi egts is not pulling with enough rpms. if the egt gets 1200, down shift or slow down. keep it 2500 rpm or more.

 

[haul_n_horses2]

[ QUOTE ]
melting down a piston in a diesel is neally inpossibel, but breaking a piston is not.

[/ QUOTE ]I believe that the pistons in a PowerStroke are aluminum alloy and they will melt if the temps get high enough and long enough. Probably before the turbo wheel which was designed for the high temps. The aftermarket pistons folks in the fast trucks are using are ceramic coated etc. to help with heat issues.