A few years ago I had an 81 Imperial (with 90K miles) that ran like crap. I couldn't set the timing because the timing marks kept bouncing around. I changed the timing chain and that cured the problem. It purred like a kitten, and then a tree fell on it.
It probably is the original one, however if the car is running well, there isn't really a need to change it right now. The only time it becomes a serious problem is if the engine has a "run-on" condition after the ignition is turned off. Under this circumstance, the engine can jerk front wards and back wards, further damaging the timing set, or taking up the slack in the chain and possibly causing it to skip time. This usually only happens to the cars with nylon coated timing chain teeth, making a new timing set necessary to get the car running again. In this case, I personally wouldn't do anything about this unless it was also time to overhaul the complete engine. You can set the ignition timing by "road timing it", rather than using the timing light, which is usually with I do to compensate for t oday's fuels anyway.
Paul W.
-----Original Message-----
From: Rob van der Es <
R.vdes@xxxxxxxxxxxxxxx>
To:
mailing-list@xxxxxxxxxxxxxxxx
Sent: Fri, 25 Jan 2008 1:30 am
Subject: Re: IML: Harmonic Balancer
Hi Paul,
Checked it today, and yes there is quite a delay between turning the engine by hand and seeing the rotor turning...
I guess the timing chain has really streched over the years. Lord knows how long it has been on the car, maybe still the first one??
Thanks for your helpful contribution (as always!)
Robert
----- Original Message ----- From: "PAUL WENTINK" <
randalpark@xxxxxxx>
To: <
mailing-list@xxxxxxxxxxxxxxxx>
Sent: Friday, January 25, 2008 1:36 AM
Subject: Re: IML: Harmonic Balancer
I have only had one of these actually fail on a 413, and it made a lot
of noise since it was rubbing against the timing chain cover part of
the time. I doubt that it is causing this problem. You may want to
check your timing chain by removing the distributor cap and watching
the rotor as you move the engine by hand. See if there is a long delay
between the movement of the crank shaft and the rotor. If not, you're
in good shape. The timing gears were metal in the 1960 model, and not
as prone to failure as those used in the 440. Old worn timing chains do
stretch, so it should be checked.
Paul W.
-----Original Message-----
From: Rob van der Es <
r.vdes@xxxxxxxxxxxxxxx>
To:
mailing-list@xxxxxxxxxxxxxxxx
Sent: Thu, 24 Jan 2008 6:07 am
Subject: Re: IML: Harmonic Balancer
Hi Paul,
Ok, back to square one:)
I want to pull the harmonic balancer for two reasons:
a) The timingmarks are changing all the time on the old one, that means
that the rubber has detoriated over the years and that the outer ring
slips...
b) I want to replace the timingchain, I don't know how long the old one
is in use (cause I don't know the maintainace history of the car), but
I can hear that it is making noise (checked it with a stethoscope)
Thanks,
Robert
----- Original Message ----- From: "PAUL WENTINK" <
randalpark@xxxxxxx>
To: <
mailing-list@xxxxxxxxxxxxxxxx>
Sent: Thursday, January 24, 2008 2:06 PM
Subject: Re: IML: Harmonic Balancer
Let's go back to square one. Why do you want to remove this?
Paul W.
-----Original Message----- From: Rob van der Es <
r.vdes@xxxxxxxxxxxxxxx>
To:
mailing-list@xxxxxxxxxxxxxxxx
Sent: Thu, 24 Jan 2008 12:01 am
Subject: Re: IML: 59 413 engine color
You might have a point here Rob!
Same thing crossed my mind, but I was more thinking of breaking the
head of the crankshaft bolt..
Leaving the remaining piece of the bolt flush with the
crankshaft....oughhhh!!!
Any thoughts, anyone? How is risky is that starter motor trick
actually??
Thanks,
Robert
----- Original Message ----- From: "Rob Kidd" <
rlkidd@xxxxxxxxxxxxxxxx>
To: <
mailing-list@xxxxxxxxxxxxxxxx>
Sent: Wednesday, January 23, 2008 8:47 PM
Subject: Re: IML: 59 413 engine color
Sounds easy enough. BUT, what if the bolt was siezed in
the crankshaft tighter than normal and you would shear a
tooth on the starter or the ring gear since the engine
would not normally turn over freely from a dead stop?
Remember, 48+ year old "worn" parts you are dealing with.
I'd try the impact route on the bolt if possible. Rob Kidd
61/65
On Wed, 23 Jan 2008 05:35:32 -0600
"Stevan Miner" <
miner@xxxxxxxxxxx> wrote:
>Sounds a little scary to me but if you do it this way, I'd certainly
>disconnect the coil wire to make absolutely no way the engine would
>accidently start with the breaker bar in place. Stevan Miner Miner
Auto >Service Winnebago, MN
>-------------------------------------------------- >From:
<
mopar413@xxxxxxxxxxx> Sent: Tuesday, January 22, 2008 6:21 PM To:
><
mailing-list@xxxxxxxxxxxxxxxx> Cc: "Dave Wilker"
><
wilkerbeast01@xxxxxxxxxxx> Subject: Re: IML: 59 413 engine color
>> Dave has the right idea. Just do like he says and make
>sure the socket is
>> on right. Workd every time. for me. ---- Dave Wilker >>
<
wilkerbeast01@xxxxxxxxxxx> wrote:
>>> I have a trick. I place the proper size socket on the
>harmonic balancer
>>> bolt, with appropriate extensions, and a good stout
>breaker bar. I turn
>>> the crank carefully until the breaker bar is resting on
>the left frame
>>> rail (driver's side). Once all the tools are firmly in
>place, I bump the
>>> starter. Just a bump. This breaks the bolt loose so you
>can remove it
>>> easily. Be careful when doing this. Make sure the
>socket is all the way
>>> on and there is no slack in the setup. David C. Wilker Jr. USAF >>>
(RET) ----- Original Message ----- >>> From: Rob van der Es To: >>>
mailing-list@xxxxxxxxxxxxxxxx Sent: Tuesday, January 22, 2008 1:22 AM
>>> Subject: Re: IML: 59 413 engine color Hi David, And, btw, do you
have a >>> good trick to remove that
>bolt that keeps the
>>> harmonic balancer on the crankshaft? I am in progress of replacing
the >>> timing chain of my
>engine, but are a
>>> little afraid to start cause everyone told me that this bolt is
very >>> hard to remove.. Especially with the engine in the car,
ofcourse I
>don't want to remove
>>> the engine for a relative "simple" job like replacing
>the timing chain!!
>>>
>>> Robert
>>
>>
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