factory head studs - Ford Powerstroke Diesel Forum
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Old 06-26-2012, 10:52 AM
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factory head studs

why didn't ford after seeing how bad to heads where in 6.0 why didn't they just add $500 to the price and install studs factory in like 05 after they saw its a problem my truck has a brand new engine built in 08 put in truck in 12 they knew damn well that they are a problem. would have saved probably millions in warrienty work any thoughts??
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Old 06-26-2012, 11:19 AM
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I have wondered the same thing a couple parts changed that could have saved millions and there reputation that there still losing costumers over

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Old 06-26-2012, 11:42 AM
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I'm sure Ford engineers were hoping Navistar would have done that but they refused to do much of anything in the way of correcting warranty issues which is why Ford sued them and dumped them as an engine supplier. That's the "funny" thing about contracts, you're stuck with them unless you can come up with a good reason for suing and getting out of it. I don't consider it's Ford's fault just because a supplier that they've had good product from before suddenly starts giving them a poorly engineered product.

Last edited by Term3; 06-26-2012 at 11:47 AM.
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Old 06-26-2012, 11:51 AM
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Guys there is nothing inherently wrong with the factory head bolts. In a stock truck that is monitored and maintained properly they are just not a problem. The problem lies with the coolant selected (Ford Gold or G-05) and the oil cooler clogging. If you monitor the truck and deal with the oil cooler when it gets clogged and the ECT/EOT temp delta exceeds 15* then you are not likely to have head gasket/head bolt issues. That is why Ford doesn't use ARP head studs.

The head bolts become an issue when the oil cooler clogs and the ECT/EOT temp delta is not monitored. The truck still runs fine so the owner continues driving it untill the egr cooler ruptures from the limited coolant flow through the egr cooler. That allows coolant to leak into the intake manifold and then into the combustion chanber where it is vaporized into steam and raises the cylinder pressures way beyond their design. That will even stretch ARP or H-11 head studs. So if you are thinking head studs are a guarantee that you won't blow head gaskets you are wrong. The trick to not blowing head gaskets is not letting the egr cooler rupture and dump coolant into the cylinder. That requires monitoring by the owner.
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Old 06-26-2012, 12:23 PM
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my dads heads blew at like 30000 k in 08 ford called it a "odd ball" cause it was never chipped and it was the second time pulling a 5W. egr was in great shape nothing wrong at all they said the bolts stretched nothing else was wrong with it was rebuilt stock lasted till sold at 250000km used as work truck.
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Old 06-26-2012, 12:32 PM
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Stock power levels do not require studs, just as simple as that PGreenSVT laid out the issues very well.

The only thing the 6.0L owner needs is a monitor to watch the health of his injectors and oil cooler, and listen to that monitor before the truck gets torn up.
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Old 06-26-2012, 12:33 PM
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I pull up to 22K lbs, been "chipped" since it had 5600 miles, and have never had a head gasket problem. But I don't, and haven't since the 5600 mile mark, recycle any exhaust gasses.
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Old 06-26-2012, 12:51 PM
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Quote:
Originally Posted by RatherBNtheWoods View Post
I pull up to 22K lbs, been "chipped" since it had 5600 miles, and have never had a head gasket problem. But I don't, and haven't since the 5600 mile mark, recycle any exhaust gasses.
And that is on stock TTY bolts? Also what "chip" or tune are you running? Sorry hijack, just curious.
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Old 06-27-2012, 01:37 PM
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Yes, OEM tty bolts, and I've had the bullydog triplepup on it/in it since it was about 6 mos old. EGR cooler sprang a leak out in eastern WY, loosened coolant cap and towed the 5er on home to TN.
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Old 06-27-2012, 05:11 PM
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By allowing the TTY bolts to "stretch" under HIGH pressures, you blow the head gaskets, but save the heads. If the bolts didn't stretch you could ruin the heads.

So ultimately Ford took the cheap way out. Head gaskets are cheaper to replace then heads.

There is another thread on here talking about this issue, where someone gave a very good explanation. And from an engineering perspective, it makes perfect sense.
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