200ci Is this cylinder head ok to run? (cracked valve guide boss)

[mob]

Hello, I recently acquired a 66 Mustang that has been sitting since 1994, it's a 200ci. I took the cylinder head off and disassembled it to replace valve springs. I went to sand blast the head today and noticed this crack on the valve guide boss. I am looking for opinions on if I need to take this to a machine shop to be repaired or if I can run it as is, I plan to use the metal body valve stem seals. I have been asking around and have gotten response saying it's just cosmetic and others saying I should get it repaired to be safe. From what I can tell it looks like new valve guides were installed and maybe at that time it cracked? Some people say it's common. So maybe it's already been run like this, not sure.

This car is not turning into a daily driver, I just want to get it running but long term I plan to swap this motor with something else so I do not have much interest in spending money on it and prefer to just run it if it's relatively safe. Thanks

 

[frozenrabbit]

Looks like a really bad valve guide job. Never seen or had any guide install with tack welds.... Are all of them tack welded?

I wouldn't trust that head in the least. I think you could find an entire engine for a reasonable price, or just a later year large log head on FB marketplace.

 

[B RON CO]

Hi, For the amount of $$$ it will cost to rebuild that head, I would look for another one. You can learn about the different heads available in the tech section and come up with a plan. Good luck

 

[The Beast]

Could you try ot make a steel sleeve and press on the cracked boss. Check and make sure no interference with springs. Good luck!

 

[Frank]

Not advice, just FYI-
Have a 300 which had the #12 valve guide boss split apart worse than that one. JB Weld, 13 years and 100k miles, still in service as a daily driver. Using an umbrella oil seal in conjunction with the factory stem seal.