D^2,
You may be right, but if a specific car hasn't had any major engine work, and
it is at a low enough mileage, it may be possible that the original timing set
is still in there, about to fail.
I am still in the process of gathering a '68 Crown Convertible, and now I have
been told that it won't run. I am still very interested in the car, but from my
familarity with these cars I am very aware of what might be wrong with it. The
current owner is well qualified to deal with minor ignition problems and fuel
issues, but has so far been stymied. If he is not able to get it running I
still plan on buying it (at a lower price), and fully intend on looking into
the timing set if I am not able to get it to fire. The car was parked less than
a year ago.
It is possible that the car ran fine the last time it was driven, but if it did
any "run-on" after it was shut off with a loose timing set, it could have
skipped time.
Paul
In a message dated 12/5/2003 10:52:57 AM Eastern Standard Time,
dardal@xxxxxxxxxxxxxxx writes:
>Paul, in addition to the other comments, here is another one. �One of the
>factors that kills these plastic timing gears is time as well as miles. �My
>guess is that the vast majority of the 60's 440s have these nylon covered gears
>replaced at one time or another by now, due to age.
>
>D^2
>
>Quoting RandalPark@xxxxxxx:
>
>> I have a question regarding this topic. It has been stated here that with
>> only 114,000 miles that it is unlikely that the engine has been over hauled.
>>
>>
>> Back when they were still quite new, I remember several early 440 Imperials
>> ('66, '67, &'68) experiencing a failure in the timing gears and/or timing
>> chain right around 100,000 miles. When disassembled, the problem was usually
>> due to the excessive wear in the synthetic coating on the teeth of the gears.
>>
>>
>> I haven't heard much about this on the IML since I have been reading here
>> since July. I have driven some newer cars that have done this as well, but at
>> much higher mileage. Has anyone experienced this with their cars?
>>
>> Paul
>>
>> In a message dated 12/4/2003 3:21:11 PM Eastern Standard Time,
>> dardal@xxxxxxxxxxxxxxx writes:
>>
>> >
>> >
>> > Quoting Kate Triplett <ad_ablurr@xxxxxxxxxxxxxxxxxxxxx>:
>> >
>> > > This thread is of considerable interest to me - I have as yet been unable
>> to
>> > > obtain any previous maintenance records for my '68 Crown other than the
>> few
>> > > receipts that "came with" in the glove box. The car does run splendidly
>> with
>> > > nary a ping on 89 octane gas, though, so I suspect the engine has been
>> > > through an overhaul once in its life - mileage is now just over 114,000.
>> I
>> >
>> > With only 114K, its unlikely that the engine was rebuilt, unless it
>> suffered a
>> > catastrophic failure. �The factory timing specs were often a bit
>> conservative,
>> > and that might explain why it does not ping. �Also, you may not be advanced
>> all
>> > the way to the recommended 8 degrees. �Most pinging problems in these old
>> cars
>> > are more likely to be related to deposits due to too much city driving and
>> not
>> > enough high speed.
>> >
>> > >
>> > > Did the dealers do a "warranty" change to these cars when the fuel
>> changes
>> > > took place, or was the timing such that it was strictly after market
>> > > rebuilding?
>> >
>> > When unleaded gas was phased out, the 68 model year was long done with its
>> > warranty.
>> >
>> > D^2
>> >
>> >
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>
>
>
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