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Timing Chain wear allowance
#1
Not too shy to talk
Not too shy to talk

Tim Stockwell
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Hello everyone,

My question is how much timing chain wear is tolerable. I have a 51' 300 with a 327. I think it jumped time by 180 degrees. When I pulled the timing cover off, the cam gear "O" marking were out 1/2 turn. I make sure the #1 piston was in the compression stroke and the rotor is pointing to #8 cylinder. The chain 3/4 - 1" of play.

What do you folks think?

Tim

Posted on: 2020/6/8 18:43
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Re: Timing Chain wear allowance
#2
Home away from home
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Ross
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Uh, if you turn your crank 360 degrees you will find that the timing marks line up. Can't recall if that occurs on #1 compression stroke, but seems to me it does not.Lay a penny in the spark plug hole and see when it floats up. The distributors can be installed 180 degrees out. I have corrected a few "no start" abandoned projects by pulling the dist and turning it 180 degrees.

But still, 3/4" play is way too much and timing chains are not that expensive. A new chain will often add performance and make those engines run cooler as the few degrees of retarding the cam caused by the chain stretch has a large effect.

Posted on: 2020/6/8 19:51
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Re: Timing Chain wear allowance
#3
Forum Ambassador
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Ozstatman
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G'day Tim(No1Packardman),
to PackardInfo.

And, I invite you to include your '51 300 in the Packard Owner's Registry.

Posted on: 2020/6/8 22:25
Mal
/o[]o\
====

Bowral, Southern Highlands of NSW, Australia
"Out of chaos comes order" - Nietzsche.

1938 Eight Touring Sedan - SOLD

1941 One-Twenty Club Coupe - SOLD

1948 Super Eight Limo, chassis RHD - SOLD

1950 Eight Touring Sedan - SOLD

What's this?
Put your Packard in the Packard Vehicle Registry!
Here's how!
Any questions - PM or email me at ozstatman@gmail.com
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Re: Timing Chain wear allowance
#4
Not too shy to talk
Not too shy to talk

Tim Stockwell
See User information
Ross,

thanks for the reply and insight. I have ordered a new chain with gears. To find the compression stroke, I used my compression tester without the gauge attached to feel the puff of air hitting my face as I manually cranked the engine over. I will keep you all posted.

Tim

Posted on: 2020/6/9 17:10
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Re: Timing Chain wear allowance
#5
Not too shy to talk
Not too shy to talk

Tim Stockwell
See User information
How do I register my cars?

Tim

Posted on: 2020/6/10 13:40
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Re: Timing Chain wear allowance
#6
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HH56
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Quote:

No1Packardman wrote:
How do I register my cars?

Tim


If you mean on this site, be logged in and select the Packard Owner Registry from the left menu. Scroll all the way to the bottom of the page that opens and you will see a link saying Add your Packard to the Registry Click on that link and another page will open where you can fill in the requested data.

Posted on: 2020/6/10 13:52
Howard
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Re: Timing Chain wear allowance
#7
Forum Ambassador
Forum Ambassador

Ozstatman
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Tim,

This FAQ may help.

Posted on: 2020/6/10 15:35
Mal
/o[]o\
====

Bowral, Southern Highlands of NSW, Australia
"Out of chaos comes order" - Nietzsche.

1938 Eight Touring Sedan - SOLD

1941 One-Twenty Club Coupe - SOLD

1948 Super Eight Limo, chassis RHD - SOLD

1950 Eight Touring Sedan - SOLD

What's this?
Put your Packard in the Packard Vehicle Registry!
Here's how!
Any questions - PM or email me at ozstatman@gmail.com
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Re: Timing Chain wear allowance
#8
Not too shy to talk
Not too shy to talk

Tim Stockwell
See User information
One more question. Is it possible to advertise on this forum? I would like to sell one of my Packards.

Tim

Posted on: 2020/6/11 16:47
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Re: Timing Chain wear allowance
#9
Home away from home
Home away from home

58L8134
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Yes, Please post your advertisement in the Packard Vehicles -For Sale, Wanted, Trade section. Pictures along with a good description and price will generate interest.

Steve

Posted on: 2020/6/11 17:05
.....epigram time.....
Proud 1953 Clipper Deluxe owner. Thinking about my next Packard, want a Clipper Deluxe Eight, manual shift with overdrive.
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Re: Timing Chain wear allowance
#10
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Fish'n Jim
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http://www.misterfixit.com/chanslop.htm

Basically, you don't want "any" within reason to be able to put on. There could be some wear showing from the dist gear with this method. Retest with the new parts, so you have a benchmark.

Another way to tell is if the timing light mark is moving around, back and forth(oscillating) can't set timing precisely. The old eyeball test was to remove chain, hold on it's side and observe static deflection, it should stay fairly straight and not sag more than a few degrees. Check the new one to get a mental feel for this.

In order to jump 180 degrees exactly, is something of a modern day "miracle" in automotive annals and the chain probably would've had to fall off on it's own.

Posted on: 2020/6/11 19:23
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