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Old 10-15-2010, 08:52 PM   #1
jagarcia89
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Default 2003 ranger 4.0 timing chain questions

I just bought a 2003 ranger with 113k. I am curious on some timing chain stuff. How many miles can these things go? Anyone have good sources on how to do it? I hear these have 3 timing chains, anyone know why or for what purpose each serves? I have taken an engine removal and rebuild class and have done multiple timing chains but never a motor with 3 and never on this motor. Any help is appreciated.
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Old 10-15-2010, 09:23 PM   #2
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Its an OHC engine so there is a chain to each cam shaft...there is also a balance shaft which is driven by the 3rd chain.
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Old 10-15-2010, 09:47 PM   #3
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Quote:
Originally Posted by Sasquatch_Ryda View Post
Its an OHC engine so there is a chain to each cam shaft...there is also a balance shaft which is driven by the 3rd chain.
Ok makes sense. So do I need to even worry about the balance chain? And about how many miles are people goin before the cam chains? Anyone know if these are interferance motors?
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Old 10-15-2010, 10:01 PM   #4
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I think what you are hearing are the problems with the older sohc's. By the time the SOHC was put into the ranger, the problem was almost gone in the SOHC>
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Old 10-16-2010, 01:12 AM   #5
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I think what you are hearing are the problems with the older sohc's. By the time the SOHC was put into the ranger, the problem was almost gone in the SOHC>
I haven't heard any problems. what problems are you referring to?
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Old 10-16-2010, 01:26 AM   #6
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The early SOHC's had problems with the timing chain cassettes falling apart allowing the chains to slap around making a horrid racket. Ford updated the cassettes and the problem has pretty much gone away with the 02 and newer engines.
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