Head Gaskets Just Done Whats Acceptable Coolant System PSI - Ford Powerstroke Diesel Forum
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post #1 of 5 Old 12-28-2011, 07:09 PM Thread Starter
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Head Gaskets Just Done Whats Acceptable Coolant System PSI

I just had the head gaskets replaced on my truck about 3 weeks ago. We replaced the head gaskets with OEM gaskets, did the head studs, all the other gaskets too, and cleaned the oil cooler. Truck has an EGR delete on it too. The thing the tech told me was that both heads were warped about .002, but were within Ford's acceptable specs. The heads weren't sent out and checked, they were just given a visual. I've put almost a 1000 miles on the truck since the head gasket repair. I'm currently running a Superchips 1855 Tuner, with the Milage XS tune. I got to say the truck runs great with this tune on it. I don't drive the truck like I stole it. I really love this truck. I have a PSI guage hooked in with the Degas bottle. How I found out that my head gaskets were blown was the PSI guage was hitting about 18 to 20 PSI before. Now the PSI guage runs between 11-13. I've seen the guage reach almost 14 PSI the other night, but I was really on the truck. There is no information here on the net that I could find to determine what the normal coolant system PSI is on a 6.0. Do you think my PSI is within the acceptable range of about 12 to 13 PSI? I purchased this truck in Aug of this year, and the truck has never once puked on me.

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post #2 of 5 Old 12-28-2011, 09:20 PM
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Subbed, Iv been wanting to know the same thing. How did you hook in the gauge?


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post #3 of 5 Old 12-28-2011, 09:26 PM
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from what i have read the cap pukes at 16 psi.
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post #4 of 5 Old 12-29-2011, 07:10 AM
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Quote:
Originally Posted by jayrw123 View Post
The thing the tech told me was that both heads were warped about .002, but were within Ford's acceptable specs. The heads weren't sent out and checked, they were just given a visual.
I have a PSI gauge hooked in with the Degas bottle. How I found out that my head gaskets were blown was the PSI gauge was hitting about 18 to 20 PSI before. Now the PSI gauge runs between 11-13. I've seen the gauge reach almost 14 PSI the other night, but I was really on the truck. Do you think my PSI is within the acceptable range of about 12 to 13 PSI?
It's unfortunate that you didn't insist on having the heads milled flat, because Ford's "acceptable specs" are not acceptable, but at least they used OEM gaskets.
Hopefully you won't have to do head gaskets a 2nd time... I found out the hard way (and expensive), after only 6000 miles the gaskets were leaking again, so the second time I had the heads milled and used OEM gaskets.

I think 10 to 12 psi is okay

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post #5 of 5 Old 12-29-2011, 08:46 AM
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Quote:
Originally Posted by Arctic Fox View Post
It's unfortunate that you didn't insist on having the heads milled flat, because Ford's "acceptable specs" are not acceptable, but at least they used OEM gaskets.
Hopefully you won't have to do head gaskets a 2nd time... I found out the hard way (and expensive), after only 6000 miles the gaskets were leaking again, so the second time I had the heads milled and used OEM gaskets.

I think 10 to 12 psi is okay
+1 to this. Wish you the best of luck.

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