IML DIGEST rebuilding 440 in 1968 Crown

I lost a timing gear on a 76 NYB at about 195,000 mi. Couldn't understand why

it just wore out. LOL. Seriously, the synthetic gears tend to be well worn and

should be changed at around 100,000 mi.. My 69 Lebaron needs this now. It

has 106,000 and has never been changed. I'm sure I'm running on borrowed

time.

Ed Noble

69 Lebaron

71 Lebaron

62 Crown

----- Original Message -----

From: Phil Patterson

To: mailing-list@xxxxxxxxxxxxxxxx

Sent: Friday, December 05, 2003 12:55 AM

Subject: Re: IML: IML DIGEST rebuilding 440 in 1968 Crown

I had that happen on a440 in a 73 Town & Country I once owned,and it had
about that many miles on it. But, I thought plastic coated timing gears
didn't become an industry wide thing till 68. I remember my dad's old
Catalina having to be fixed by the dealership, but I'm not sure right off of
the top of my head when Chrysler changed to these. I would assume post-68
though.
Phil <><
----- Original Message -----
From: <RandalPark@xxxxxxx>
To: <mailing-list@xxxxxxxxxxxxxxxx>
Sent: Friday, December 05, 2003 12:48 AM
Subject: Re: IML: IML DIGEST rebuilding 440 in 1968 Crown

> 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

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