Soon the head will be carted off to the machine shop to cut in new over sized valves (1.70", 1.44") from stock. Do I need to install new hardened seats, or is there enough depth of hardness to just enlarge the stock opening?

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67' Dart GT Convertible; the old Chrysler Corp.
82' LeBaron Convertible; the new Chrysler Corp
07' 300 C AWD; Now by Fiat, the old new Chrysler LLC

I put hardened in the Exhaust only.
Frank

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Scrapple: Because a mind is a terrible thing to waste.
73 Duster - Race Car
66 Dart Wagon - DD
178" FED
82 D150
All Slant powered

"I put hardened in the Exhaust only"

+1

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obliquely-inclined state of mind

+2. Hard seats in the exhaust locations.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

The hardening in the stock exhaust valve seats is often quite shallow. A stock valve job or two and the hardening is usually gone. Hard exhaust seat inserts are the way to go.

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Joshua

Kin'dah figured that, but wanted to check in with the Gurus. Thanks

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67' Dart GT Convertible; the old Chrysler Corp.
82' LeBaron Convertible; the new Chrysler Corp
07' 300 C AWD; Now by Fiat, the old new Chrysler LLC