Timing Chains (& you!)
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 38
From: EXTREME southwest CT
Nylon teeth on stock big block timing gears too...
When they fall apart it's time to pull the pan and get all that junk out of the oil pump pickup.
I just put a timing light on and snap the throttle open and closed.
If the marks jump around you are seeing evidence of a sloppy timing chain.
When they fall apart it's time to pull the pan and get all that junk out of the oil pump pickup.
I just put a timing light on and snap the throttle open and closed.
If the marks jump around you are seeing evidence of a sloppy timing chain.
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Der Postmeister
Joined: Sep 2006
Posts: 6,859
Likes: 560
From: Long Beach, Calimexiforia
Nylon teeth on stock big block timing gears too...
When they fall apart it's time to pull the pan and get all that junk out of the oil pump pickup.
I just put a timing light on and snap the throttle open and closed.
If the marks jump around you are seeing evidence of a sloppy timing chain.
When they fall apart it's time to pull the pan and get all that junk out of the oil pump pickup.
I just put a timing light on and snap the throttle open and closed.
If the marks jump around you are seeing evidence of a sloppy timing chain.
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 38
From: EXTREME southwest CT
It's only reading the signal from the pickup in the distributor anyhow...
You need to remove the spout to check and set base timing anyhow, no?
As the revs drop back down a slack timing chain will never show a steady decrease of the advance.
Just do yourself a favor and install something like a true roller and you won't have to think about for well over 100k.
Junior User
Joined: Jun 2010
Posts: 86
Likes: 0
From: Tallahassee, Fl.
How much rotation on the distributor is too much using the rotor to turn it? This one moves about 1/2", i.e. the full width of the "blade" on the tip of the rotor.
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