IIRC, Chrysler had hardened exhaust valve seats from the
1930's until the early 1950's, then again in 1973 or
thereabouts.
--Roger van Hoy, '55 DeSoto, '58 DeSoto, '42 DeSoto, '41
Dodge, '66 Plymouth, '81 Imperial, Washougal, WA
----- Original Message -----
From: "Dave Grove" <dave@xxxxxxxxxxxxxxxxxxx>
To: <L-FORWARDLOOK@xxxxxxxxxxxxx>
Sent: Wednesday, July 14, 2004 2:16 PM
Subject: Re: [FWDLK] lead substitutes
| Actually, - Chrysler did not start using hardened seats
until the 1973 MY.
| My 71 383 did NOT have them (proof can be seen if you just
look at the heads
| now).
| One note though, - you probably won't have any trouble
with NO-lead gasoline
| as long as the engine has not been apart (i.e. a "Valve
job" performed).
| The lead that is imbedded into the valve faces and seats
will keep them
| protected for a long time (or so I hear). Once a valve
job is done (of
| course), the lead is removed.
| It also depends on the type of driving the engine is being
subjected to.
| Long high-speed running can pound them out even if there
is some
| "protection" there at the moment. "Putting around town"
on the other hand
| means the valves etc will last a long time (also, - "or so
I have heard").
| A couple of cases in point, - my 71 Chrysler had 50K on it
when I bought it.
| The valves lasted until 140 (bought the car in 81, - so NO
leaded gas was
| available).
|
| I put a set of "fresh" non-hardened seat heads on my
daughter's 318 Duster.
| A year later, - the seats were so pounded-out that the car
would not even
| start.
| (yes, - she is a "lead-foot").
|
| Regards,
| DaveG.
|
|
|
| ----- Original Message -----
| From: "Scott H" <kneedrager@xxxxxxxxxxx>
| To: <L-FORWARDLOOK@xxxxxxxxxxxxx>
| Sent: Wednesday, July 14, 2004 4:56 PM
| Subject: Re: [FWDLK] lead substitutes
|
|
| > Ed,
| > I am sure the list will correct me but I seem to recall
a thread on this
| > topc a few years ago and the concensus was that Chrysler
had been using
| > hardened valve seats since the early 50's. More of a
chevy and ford
| > problem.
| >
| > Scott
| > 1956 Dodge Custom Royal Lancer
| > 2002 Dodge Ram Quad Cab
| >
| >
| >
| >
| >
| > ----Original Message Follows----
| > From: eddee <eddee@xxxxxxxxxxxxx>
| > Reply-To: eddee <eddee@xxxxxxxxxxxxx>
| > To: L-FORWARDLOOK@xxxxxxxxxxxxx
| > Subject: [FWDLK] lead substitutes
| > Date: Wed, 14 Jul 2004 13:07:19 -0400
| >
| > Hello List
| >
| > I have been advised,,as I am sure many already know,,,to
install hardened
| > exhaust valve seats at the earliest time in any of the
older heads.
| >
| > Supposedly the lead in the old fuel acted as a lubricant
and coolant to
| > prevent the exhaust valves from 'eating' the seat area.
| >
| > I will probably do this,,,but,,,,has anyone ever used
the lead substitutes
| > presently on the market instead of installing the
hardened seats??
| > Has it been successful at all over the long haul??
| > How 'far' will one be able to go without installing the
seats??
| >
| > Thanks for the info
| >
| > ED ECKERSON
| > LI NY
| > 57 FURY
| > 59 COMMANDO PROJECT
| >
| >
____________________________________________________________
_____
| > Get fast, reliable Internet access with MSN 9 Dial-up -
now 2 months FREE!
| >
http://join.msn.click-url.com/go/onm00200361ave/direct/01/
| >
| >
|
|
|
Back to the Home of the Forward Look Network