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Nice write up? Man I'm needing to do this job. My truck needs head gaskets and studs. I've been tossing around the options of doing a cab off or doing it cab on. I do have a 2 post lift in my shop and I'm blessed to have a fairly large shop, 40x60 , to be able to lift the cab, and roll the chassis back to work on the motor. You stated that it took you 20hrs to do this job...thats not bad, but I'll bet you must have been grinding pretty hard at it. My funds are limited. $2000 at most to spend on this job. I just finished towing my work trailer and the truck just quit going down the highway, not related to the HG leak. The IPR stops working when it gets hot. I sat on the highway for about an hour to let it cool down, then it started right up and I was able to limp it back home. I got the new OEM IPR sitting on the bench.

So now I need to make the decision to go all the way and change the HGs and studs. I'm getting really tired of checking the coolant level, it's obviously worse when I tow. It's time. Cab off or cab on?
Seeing as how you have the shed and space. And of course the lift, cab off without question.
 
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Yeah thats kinda what I was thinking. I guess one of the draw backs is that I have to evacuate the AC system but I'm no spring chicken, I'm 54 years old and the idea of bending over the cab to do this job sends shivers up my spine. I did the oil cooler about a year back and that sucked...lol.

Thanks for the quick reply. It's an 05 f350. I'm in the process of filling my shopping cart with parts. So far I got the Felpro gaskets, arp studs. oem standpipes and dummy plugs, a new STC fitting kit for the back of the oil pump. a new OEM thermostat ( mine seems to be sticking a little), Oh and the new IPR because its getting hot and I get the hot start problem. Are there any high pressure oil leak parts that I should be changing while I'm in there? . Anything else?
 

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Yeah thats kinda what I was thinking. I guess one of the draw backs is that I have to evacuate the AC system but I'm no spring chicken, I'm 54 years old and the idea of bending over the cab to do this job sends shivers up my spine. I did the oil cooler about a year back and that sucked...lol.

Thanks for the quick reply. It's an 05 f350. I'm in the process of filling my shopping cart with parts. So far I got the Felpro gaskets, arp studs. oem standpipes and dummy plugs, a new STC fitting kit for the back of the oil pump. a new OEM thermostat ( mine seems to be sticking a little), Oh and the new IPR because its getting hot and I get the hot start problem. Are there any high pressure oil leak parts that I should be changing while I'm in there? . Anything else?
One thing I'd do different than the OP is I'd have the heads o-ringed, oh and I'd have the shop do a valve job too. Wait that's 2 things I'd do different. No 3 things, if I was in that deep I'd drop another $290 on a new oil cooler.
And yes if you have the means, absolutely pull the cab! Makes the job so much easier on the back, lets you do a better job torquing the heads and aligning the damn up pipes.

If you don't want to o-ring the heads then @LoxDiesel has a lead on Cometic head gaskets with a built in fire ring.
 

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One thing I'd do different than the OP is I'd have the heads o-ringed, oh and I'd have the shop do a valve job too. Wait that's 2 things I'd do different. No 3 things, if I was in that deep I'd drop another $290 on a new oil cooler.
And yes if you have the means, absolutely pull the cab! Makes the job so much easier on the back, lets you do a better job torquing the heads and aligning the damn up pipes.

If you don't want to o-ring the heads then @LoxDiesel has a lead on Cometic head gaskets with a built in fire ring.
I did the OEM oil cooler last year around this time. I should have done the head gaskets then but I did'nt have the time or the money. I knew they'd have to be done but it wasn't that bad yet. This last tow trip it was pretty apparent that it was time. I lost a couple of quarts of coolant on a 100 mile tow. It's not burning water yet that I can tell but it's certainly blowing off the pressure cap on the coolant bottle. I aint got more to spend than $2000, so if the heads and valves look ok, thats whats going back on. If I find that the heads are in terrible shape, then I'll have to reconsider. I'm going with the Fel-Pro gaskets because they seem to be the best thing out there right now and they seem to have a good track record of staying together compared to everything else out there. I don't plan on boosting the crap out of this truck, it's got plenty of power to do what I need it to. I'm more concerned with reliability. I have a Bridgeport milling machine here, I certainly have all the tooling neccesary to o-ring them myself but I can't afford to be the guinea pig on my own set of heads. I would certainly deck the heads if it turns out that they need to be resurfaced. More will be revealed.
 

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Don't discount the Cometic gaskets. I haven't used them on a 6.0, but they make high quality gaskets. That said, if you're looking to save money, the Fel-pros are probably the best bang for the buck. The Cometics aren't cheap.

I'd recommend o-rings, even if you have to save up little. I know the agony of these decisions and weighing cost and outcome, but the question is, can you afford to do it twice?
 
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Don't discount the Cometic gaskets. I haven't used them on a 6.0, but they make high quality gaskets. That said, if you're looking to save money, the Fel-pros are probably the best bang for the buck. The Cometics aren't cheap.

I'd recommend o-rings, even if you have to save up little. I know the agony of these decisions and weighing cost and outcome, but the question is, can you afford to do it twice?
I definitely don't want to do it twice. I wish there was someone local to me that could o ring my heads. I did watch a video on YouTube for o ringing the heads, I'm gonna see if I can find it again. I might o ring them myself. It actually looked really simple if you got the machines, which I do. Heck even if I gotta buy an attachment for the machine, I'd still be way ahead of the game.
 

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I definitely don't want to do it twice. I wish there was someone local to me that could o ring my heads. I did watch a video on YouTube for o ringing the heads, I'm gonna see if I can find it again. I might o ring them myself. It actually looked really simple if you got the machines, which I do. Heck even if I gotta buy an attachment for the machine, I'd still be way ahead of the game.
You'd have to have the tooling and build a jig, just having a Bridgeport isn't quite enough. Seriously consider the Cometics or send them out. My opinion + :twocents:
 

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You'd have to have the tooling and build a jig, just having a Bridgeport isn't quite enough. Seriously consider the Cometics or send them out. My opinion + <img src="http://www.powerstroke.org/forum/images/smilies/twocents[1].gif" border="0" alt="" title="Two Cents" class="inlineimg" />[/QUOTE]

The Comedics are $150 for the set, give or take? That's cheap insurance. I could definitely go for that. I can return the Fel-pros , that's no biggie.
 

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You'd have to have the tooling and build a jig, just having a Bridgeport isn't quite enough. Seriously consider the Cometics or send them out. My opinion + <img src="https://www.powerstroke.org/forum/images/smilies/twocents[1].gif" border="0" alt="" title="Two Cents" class="inlineimg" />
The Comedics are $150 for the set, give or take? That's cheap insurance. I could definitely go for that. I can return the Fel-pros , that's no biggie.[/QUOTE]

I think that $150 each MSRP, roughly twice as much as the Fel-pro's. Unless...
@LoxDiesel do you have a source for the Cometics?
 

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You'd have to have the tooling and build a jig, just having a Bridgeport isn't quite enough. Seriously consider the Cometics or send them out. My opinion +
The Comedics are $150 for the set, give or take? That's cheap insurance. I could definitely go for that. I can return the Fel-pros , that's no biggie.
I think that $150 each MSRP, roughly twice as much as the Fel-pro's. Unless...
@LoxDiesel do you have a source for the Cometics?[/QUOTE] $300 for the pair?
 

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Amazon, thats about what I pay per gasket. They make 2 different thicknesses.062 and .067 which is predicated by the last number. I’ve always used the 062’s

Note the price is per gasket.

Double edit. Even if you did the gaskets cab on you’d have to drain the a/c to remove the evap box anyway. At a steady pace for me, the cab will fly in 2 hours. Sometimes less.

Triple edit. Also don’t forget the updated pushrods, especially since the heads will be decked. 8C3Z-6565-B is the part number. You’ll need 16. Also get a valve cover gasket set, I know the valve covers are reusable, the rocker box gasket isn’t. I get them through mahle, as well as exhaust manifold gaskets. I’ll try to get you the numbers tomorrow. Also get the AP0002 kits for the injectors. Its the only kit available that reseals the ENTIRE injector. Including the nipple oring on top of the injector.

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Amazon, thats about what I pay per gasket. They make 2 different thicknesses.062 and .067 which is predicated by the last number. I’ve always used the 062’s

Note the price is per gasket.

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Thanks for the reply! I know that the fel-pro gaskets have a thicker part around the combustion chamber, and so far, I haven't seen any documented failures with them. If you're aware of any failures with the fel-pro gaskets , put a link here, I'd be interested. I'm not poo pooing the cometics, but there really doesn't seem to be much about them, that I've seen. I'm gonna start a new thread. I just started disconnecting everything last night to lift the cab.
 

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Discussion Starter #54
I'm pretty sure the Fel-Pro HG's also have that raised "fire ring" around the bore of the gaskets. I would definitely trust a Fel-Pro gasket before I would trust that Cometic.

My Fel-Pro's are still going nice and strong.....towing lots of heavy stuff, no issues yet. I would definitely use them again.
 

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I'm pretty sure the Fel-Pro HG's also have that raised "fire ring" around the bore of the gaskets. I would definitely trust a Fel-Pro gasket before I would trust that Cometic.

My Fel-Pro's are still going nice and strong.....towing lots of heavy stuff, no issues yet. I would definitely use them again.
Now you see...contradictory info. Who to believe and what to do. I'm gonna compare the 2 gaskets when I get them. They're both on order. I'll have both by Monday. Ordered through Amazon. A refund will be easy peasy on the ones I don't keep..

How many miles on your truck and were your heads decked and o ringed or just reinstalled?
 

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Discussion Starter #56
Those Cometic head gaskets must be pretty new to the market…I’ve never heard of anyone every using them. I’m not sure I would want to be the guinea pig for them……I’ve heard nothing but great things about Fel-Pro head gaskets.

My local diesel shop that works primarily on 6.0’s told me that they ONLY use Fel-Pro head gaskets on customers 6.0’s…….unless you don’t want them to warranty the work, then they will use whatever gasket you want. They have a 5-year warranty on their “bullet proofing” package they offer with ARP studs and Fel-Pro HG’s. That right there should tell you something.
Here is a link with some info on the Fel-Pro 6.0 Head Gaskets.

https://www.felpro.com/content/dam/marketing/North-America/felpro/pdfs/Fel-Pro-IS-Power-Stroke-6.0L-Head-Gasket-Flyer.pdf


My truck had around 215,000 when I did the head gaskets if I remember right. I had the heads inspected, decked (around .006" to get them perfectly flat), and that's it.
 

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@LoxDiesel

Wanna enlighten these guys to how well your cometics are holding up and how long you've been using them?

_______________________________
04 f250 4x4
just some things here and there
 

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Been installing them since Jan of 2018. Over 30 trucks. No issues. My Ex has them, running 225/30’s with stg 2 cam ran it hard down the track half a dozen times no issues. There are a few members on here with them.


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And they're made in the USA,
6.0 Fel-pros are made in China
 

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Those Cometic head gaskets must be pretty new to the market…I’ve never heard of anyone every using them. I’m not sure I would want to be the guinea pig for them……I’ve heard nothing but great things about Fel-Pro head gaskets.

My local diesel shop that works primarily on 6.0’s told me that they ONLY use Fel-Pro head gaskets on customers 6.0’s…….unless you don’t want them to warranty the work, then they will use whatever gasket you want. They have a 5-year warranty on their “bullet proofing” package they offer with ARP studs and Fel-Pro HG’s. That right there should tell you something.
Here is a link with some info on the Fel-Pro 6.0 Head Gaskets.

https://www.felpro.com/content/dam/marketing/North-America/felpro/pdfs/Fel-Pro-IS-Power-Stroke-6.0L-Head-Gasket-Flyer.pdf


My truck had around 215,000 when I did the head gaskets if I remember right. I had the heads inspected, decked (around .006" to get them perfectly flat), and that's it.
My truck has 217, 000 miles. I just took the passenger side head off. The cylinders look real good, hone marks, no scoring. I think the #5 cylinder, third one back from the front had the head gasket leak. I'm gonna check the other side tonight after dinner.

The fel-pros have a track record now, but they didn't 3 yrs ago. I started a new thread with pictures, it's titled cab off head gasket something in the general section.
 
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