7.3 gallons per hour at idle ? - Page 5 - Ford Powerstroke Diesel Forum
 
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post #41 of 103 Old 01-29-2010, 07:45 PM
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I was trying to say that I was confident with my answer. Not trying to sound like a know it all.
Then you should have said it that way...not coming on here SAYING you know what your talking about...and admitting your still in school was not helpful to your argument.

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post #42 of 103 Old 01-29-2010, 07:48 PM
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post #43 of 103 Old 01-29-2010, 07:50 PM
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So explain to me what exactly causes glazed cylinder walls
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post #44 of 103 Old 01-29-2010, 07:55 PM
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So explain to me what exactly causes glazed cylinder walls
Go ask your highly esteemed instructor, I'm a plumber that knows arrogance when he sees it...that's all I have for you.


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post #45 of 103 Old 01-29-2010, 08:02 PM
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Go ask your highly esteemed instructor, I'm a plumber that knows arrogance when he sees it...that's all I have for you.
That was intended for Tyler not to sound arrogant.
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post #46 of 103 Old 01-29-2010, 08:15 PM
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Sure, give me a second to type it up

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post #47 of 103 Old 01-29-2010, 08:26 PM
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Blowby is your MAIN reason for glazing. If you don't take care of your engine (ie: regular maintenance, etc.) then you can start to wear out your rings and cooling jets and build up some blow by.

Now lets see some perspective on why your medium duty diesel engine most likley isn't going to develop a glaze after idling for... lets say an hour because that's what most guys do. I'd say a good 95% of our trucks here idle at 300-400 degrees F, at idle. That's temp INSIDE the exhaust manifold, it may be slightly higher in the combustion chamber. Given the fact that I haven't seen anyone post here or discuss an engine with less than 20,000 miles on it, we can safely assume your motor is fairly broken in... I'd say over 50,000 miles. The amount of wear on the cylinder wall, and the pressure pushing on very good broke in rings is WAY to tight to allow enough blow by, and the tempurature is NOT hot enough to flash burn the oil.

At a stock fuel setting not enough fuel is pushed in to cause a wet stack... although it MAY happen if temps are EXTREMLEY cold, I don't see it happening to you.

Now, IF you have a NEW engine, the rings will not seal as good and they will let a little bit more oil by, and the glazing is possible if your not loading the motor down over 70%.

Also, you need to remember that the compression ratio of the motor we are talking about is 17.5:1

Since your teacher can't teach you **** about a diesel, let me say this.. take 17 and a half beer cans, smash them into 1 beer can, thats the amount of air going into the combustion chamber. At an idle the drive pressure is pretty intense and a major blow by is really not very likely. As RPM goes up, compression does go DOWN, that's where you would see your glaze come about, but still... its not going to happen because in a diesel, the rings are designed with a curved lip, so as to when the piston is coming UP, the air pushes the top ring down and out. Another preventiive measure to kill wet stacking and glazing.

Lets see... what else... your teacher is a tool... leave that school

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post #48 of 103 Old 01-29-2010, 08:33 PM
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Spoken like a true Scuffy *****.


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post #49 of 103 Old 01-29-2010, 08:35 PM
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^ very nice!
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post #50 of 103 Old 01-29-2010, 08:36 PM
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Whose calling ME joe dirt?
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Spoken like a true Scuffy *****.
I learn from the best!!! Not no damn teacher...

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