Over Heating Issues
Postmaster
Joined: Aug 2001
Posts: 4,270
Likes: 5
From: Delaware
If you have a stretched timing chain, your cam will be a few degrees retarded, but your timing marks will still line up using the methods described above, because the timing marks are keyed to the crank and TDC is a crank/piston function.
You can determine if your timing chain is stretched by putting a dial indicator on a rocker at the valve end. Rotate the crank in one direction until the rocker is all the way down(Valve open), then reverse the direction of the crank rotation and using a degree wheel, determine how many degrees of crank rotation are required to move the rocker. You should be able to find a spec on timing chain play, but I'm not sure what it is off-hand.
You can determine if your timing chain is stretched by putting a dial indicator on a rocker at the valve end. Rotate the crank in one direction until the rocker is all the way down(Valve open), then reverse the direction of the crank rotation and using a degree wheel, determine how many degrees of crank rotation are required to move the rocker. You should be able to find a spec on timing chain play, but I'm not sure what it is off-hand.
Senior User
Joined: Feb 2009
Posts: 308
Likes: 0
From: Southern NM
The dampener is also comprised of two pieces.The outer ring is pressed over the inner hub.If the outer ring slips the indications on the ring mean nothing.As Danlee mentioned,it will need to be indicated to find the true TDC,and follow the wear on the timing chain.
Thread Starter
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Junior User
Joined: Oct 2010
Posts: 75
Likes: 0
There's never a simple fix is there? So, it sounds like I need a weekend and a 18 pack to get to the bottom of this thing. It all starts with finding TDC. Then checking the position of the rotor to make sure it's pointing at #1. Next, measure the play in the rockers to make sure the timing chain isn't stretched. Now, I just need a dial indicator and a degree wheel.
