Headgaskets on studded 06 f250 - Ford Powerstroke Diesel Forum
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post #1 of 21 Old 12-15-2019, 07:51 AM Thread Starter
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Headgaskets on studded 06 f250

Hey guys. Helping my bro inlaw on his truck. He bought it a year ago. 06 f250 4x4 Lariat longbed. Powermax stage 1, said to have 155/stock injectors, sct tuner with Gearhead tunes, 240,000 miles. Seller had receipts for headstuds with Ford headgaskets, stc fitting all done at 194,000 miles. Since then we switched to Rotella 5w-40 t6, with an oil bypass kit, metal intercooler pipe, new boots, egr spool plug, additional ground cables, fuel filters, Red head steering box, rebuilt rear diff, repaired sunroof and Cts2 monitor.The previous owner mentioned towing with the truck, I got a little nervous because he had no monitor or egt gauge. The truck ran good except for a 7 second long start hot or cold. Fast forward a year ,we moved our families out of state and his truck began puking with a 5,000 lb trailer and a fully loaded truck, going up highway 80 in the Tahoe area. 1st time towing with it. The truck was pressurizing the coolant system. So he watched the temp and kept the coolant topped off for 3 additional trips back and forth. I am thinking the previous owner had pushed it too hard towing on a hot tune and compromised the gaskets back then, but didn't appear until towing a load. So we have it all torn down. We found a BD egr cooler, updated ipr screen,standpipes and dummy plugs from 2012, replacing anyways. I can't believe the ficm has a date of 2005, original! Installing updated pushrods, blue spring and having the heads inspected, decked and o ringed. Looking at Ford or Fel pro headgaskets and re using the arp studs.The deltas were 10 ish, he wants to backflush the oilcooler to save some $, has to replace leaking gaskets anyways. Attached are some pics from the job. Do the dark spots look to be where the leaks were?
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05 F350 supercab LB 4x4 auto XLT
157,000 miles
head studs
Edge Insight Cts2 pro: Gearhead tow, 8k tow, srl+
Atlas 40 ficm tune
3-5 shift solenoid
3.5 inch dp w/mbrp 4 inch and what looks like a"cat..."
coolant bypass filter
blue spring,banjo fittings
turbo oil line upgrades
front leveling kit w/ Bilstein 5100shocks, damper
2017 factory Ford 18 inch wheels
08 mirrors
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post #2 of 21 Old 12-15-2019, 09:09 AM Thread Starter
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Pulled the injectors. Found some sludge on 1 where the bad gasket looked to be.
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05 F350 supercab LB 4x4 auto XLT
157,000 miles
head studs
Edge Insight Cts2 pro: Gearhead tow, 8k tow, srl+
Atlas 40 ficm tune
3-5 shift solenoid
3.5 inch dp w/mbrp 4 inch and what looks like a"cat..."
coolant bypass filter
blue spring,banjo fittings
turbo oil line upgrades
front leveling kit w/ Bilstein 5100shocks, damper
2017 factory Ford 18 inch wheels
08 mirrors
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post #3 of 21 Old 12-15-2019, 09:12 AM
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Iíve only had one hands on experience with the 6.0L which is a whole different situation, but Iíve been pulling images that people have posted on HG failures.

So far when gaskets fail by the exhaust ports the owners have talked about loss of coolant resulting in an overheat, at least thatís the trend of a few. The typical failure is down the center of the head, the sealing surface tenting. But to answer the question, the black would be carbon tracks from escaping combustion.

Would those heads Iíd check across the width to see if the center is raised.

As far as the gaskets youíll need to use what the person who is doing the o-rings recommends. Some shops discourage the use of Fel-Pro gaskets with o-rings, probably due to Fel-Proís design of the sealing ring conflicts with the ring. Fel-Pro was incorporating a design to manic o-rings.

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post #4 of 21 Old 12-15-2019, 10:10 AM
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After 2 HG failures, one after ARP studs, I'm pretty well convinced that you cannot sustain the cylinder pressures you see when towing a load and really pushing the truck. (i.e. towing at 80MPH) without O-ringed heads. If he's going to be towing and running 80MPH he would see another HG failure at some point without the o-rings. No way I'd put it back together without o-ringed heads.

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post #5 of 21 Old 12-15-2019, 11:13 AM
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Quote:
Seller had receipts for headstuds with Ford headgaskets,
not that it matters but if those are OEM gaskets I would expect to see blue sealant vs black



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post #6 of 21 Old 12-15-2019, 06:39 PM
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Yeah those gaskets look like Mahle Black Diamonds. I got Fel Pro head gaskets for my 6.0 build and they look like a very high quality gasket. But time and a heavy right foot will tell the truth.
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post #7 of 21 Old 12-15-2019, 07:01 PM
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felpro has been proving themselves daily as a top contender IMO

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post #8 of 21 Old 12-15-2019, 08:25 PM Thread Starter
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Ya must not be Ford gaskets. Surprised they were listed on the previous receipt as Ford....He is taking the heads to the machine shop tomorrow to find out what he is in for$$$$. Is there any way to determine if the injectors are
155's? I am thinking not. Also should we try and clean the tips or does it not really matter?

05 F350 supercab LB 4x4 auto XLT
157,000 miles
head studs
Edge Insight Cts2 pro: Gearhead tow, 8k tow, srl+
Atlas 40 ficm tune
3-5 shift solenoid
3.5 inch dp w/mbrp 4 inch and what looks like a"cat..."
coolant bypass filter
blue spring,banjo fittings
turbo oil line upgrades
front leveling kit w/ Bilstein 5100shocks, damper
2017 factory Ford 18 inch wheels
08 mirrors
johnnyl is offline  
post #9 of 21 Old 12-16-2019, 03:36 AM
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Quote:
Originally Posted by johnnyl View Post
Ya must not be Ford gaskets. Surprised they were listed on the previous receipt as Ford....He is taking the heads to the machine shop tomorrow to find out what he is in for$$$$. Is there any way to determine if the injectors are
155's? I am thinking not. Also should we try and clean the tips or does it not really matter?
Be sure the Machine shop is familiar with machining the 6.0. This can turn into an expensive experiment if they aren't. You can get a set of heads from KDD or UCF for a little north of $2K. Hope it all goes well!

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post #10 of 21 Old 12-16-2019, 07:49 AM
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The vast majority of what I have read has been good with the Fel-Pro gaskets and o-ringed heads. I'm getting ready to do this setup to my own truck in the next couple weeks. If you are going to reuse your heads, make sure you have your heads magnafluxed for cracks before your shop starts machining. If they are cracked and you don't know it, it will be an almost certain third rebuild down the line sometime. I like the KDD heads myself. For what time and cost it takes to do a rebuild, getting new castings that are machined to the level the KDD's are with new valves, guides, and springs, seems worth it to me. my personal opinion would also be to go ahead and replace the oil cooler while you are in there. Backflushing will help it, but if you're already that far, $300 for a new cooler is a lot cheaper than still having crud in your existing cooler. Just my $.02.
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