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cylinder head question

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Old Dec 22, 2021 | 06:25 AM
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Ed Barry
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cylinder head question

I've removed the 7.3 engine from my 2003 F250 to replace the oil pan, clutch, and fix some leaks. I was surprised to find severe corrosion on the passenger side cylinder head, so much that at least one of the exposed head bolts is not providing clamp to the head. I'm debating what path to take here as the head needs to be replaced. I would rather just replace the damaged head as opposed to doing both of them, but don't know if that would cause a problem. What experience is out there? Has anyone just done one head? I am considering a remanufactured head as I've not had much luck finding a decent used head at a reasonable price that matches my casting number.
 
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Old Dec 22, 2021 | 08:42 AM
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Moved to 1999-2003 7.3L PSD engine forum.

Good luck with your repairs
 
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Old Dec 23, 2021 | 07:01 AM
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If it were me, I would probably replace the damaged head and go ahead and pull the other for a trip to the shop. Give it a refresh to make sure you won't have any crazy imbalance issues haunting you down the road. May consider some new injector cups, if they're OG, while it's out.
 
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Old Dec 23, 2021 | 07:24 AM
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Originally Posted by Ed Barry
I've removed the 7.3 engine from my 2003 F250 to replace the oil pan, clutch, and fix some leaks. I was surprised to find severe corrosion on the passenger side cylinder head, so much that at least one of the exposed head bolts is not providing clamp to the head. I'm debating what path to take here as the head needs to be replaced. I would rather just replace the damaged head as opposed to doing both of them, but don't know if that would cause a problem. What experience is out there? Has anyone just done one head? I am considering a remanufactured head as I've not had much luck finding a decent used head at a reasonable price that matches my casting number.
THe mileage would dictate what route I would go. If it has couple hundred thousand miles i would go ahead and pull both heads and replace the valves. While I dont really see it brought up here very much the intake valves on these engines take a serious beating. I have one with 300 k apart where I could show you what's left of the valves. If it's lower mileage or you want to keep it cheap and simple you could extract one bolt at a time, replace and torque and never even pull the head. I just reread your post the head it self is damaged I guess. In that case yah your fine just doing the one but my suggestion remains the same with regards to the mileage. I just pulled a single head on my 99 to lap valves. It had 2 intake valves not seating fully 85k miles. Here's a 300k intake valve. The seat is extremely tough and a significant amount of material is missing.


 
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