The Dodge engines, and their Hemi versions, do not have hardened
valve seats.
It is claimed that a vintage engine has acquired sufficient lead
deposits
in its valve area so as to shield it from valve recession, unless
the
engine is raced or put under a large (towing) load.
However, when an engine is rebuilt, the logical thing to do is to
have
stellite seats punt into the heads at that time (in other words:
there is
no immediate/special need to put in those seats, if a car is
moderately
driven, but, when the opportunity arises: do it..to it).
Neil Vedder
On 6/17/2014 1:23 PM, Jason Rogers
wrote:
And not to be confused with tight rumps...
The flathead engines had hardened exhaust valve seats,
starting in 1933.
What about the early V8s and the Slant Sixes, prior to
the unleaded fuel era?
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