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1999 to 2003 7.3L Power Stroke Diesel
7.3L Power Stroke Diesel equipped Super Duty and Excursion.

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  #1  
Old Thu, February 4th, 2021, 07:55 PM
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Oh, it looks like the intake and exhaust valves are swapped on the one head.
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Old Thu, February 4th, 2021, 08:05 PM
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BINGO!

They are the same diameter and length. The seats are cut at different angles but they'll still seal. The problem? The margin becomes too narrow and the valve material is WAY different. The exhaust valve is an inconel alloy and the intake is something ferrous that is way less heat resistant.

You win, Bill!
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Old Thu, February 4th, 2021, 09:24 PM
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Quote:
Originally Posted by cleatus12r View Post
BINGO!

They are the same diameter and length. The seats are cut at different angles but they'll still seal. The problem? The margin becomes too narrow and the valve material is WAY different. The exhaust valve is an inconel alloy and the intake is something ferrous that is way less heat resistant.

You win, Bill!
Thanks. I was trying to look at the pics on my phone earlier. Couldn't make out much detail. Now that I'm on the computer, it's much more evident.

Now with that said, maybe they confused the head with a prototype reverse-flow setup. LOL
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  #4  
Old Thu, February 4th, 2021, 09:45 PM
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At least one head was assembled correctly and able to be salvaged.

I bet it made one heck of a racket when it let go. The guy was pulling a trailer up a pretty good hill when it quit running.
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Old Tue, November 28th, 2023, 12:07 PM
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Originally Posted by cleatus12r View Post
At least one head was assembled correctly and able to be salvaged.

I bet it made one heck of a racket when it let go. The guy was pulling a trailer up a pretty good hill when it quit running.
curious, were you able to get the mfg/rebuild shop to cover the cost due to incorrect build?
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