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  #31  
Old 11-16-2012, 05:19 PM
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Originally Posted by CdnoilRAM View Post
Well, if it's what we've been seeing for a while on the LXs with the 5.7L, then it's the eagle engines with a few older ones thrown in for good measure. The timing chain tensioner spring fails causing the timing chain to hit the slider which will basically break the slider into several pieces and sometimes crack the thrust plate. It has happened on a few stock vehicles, but typically it's seen with mildly modified engines. The basic fix is to swap in a 6.1L thrust plate and there will be no issues. You can tell the difference between the 6.1L thrust plate because it's black and the 5.7L one is silver/grey. Just the fix that the LX guys have been doing for the past few years.

Thanks, CdnoilRAM. That sounds like a fairly comprehensive report on what Ram Tech might be referring to. And thanks for that pic.
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Old 11-16-2012, 05:29 PM
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interested as well. i was just lookin at a couple 2012's at the dealer today
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  #33  
Old 11-16-2012, 05:48 PM
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Originally Posted by TNC View Post
Thanks, CdnoilRAM. That sounds like a fairly comprehensive report on what Ram Tech might be referring to. And thanks for that pic.
That looks particularly nasty, is this how our RAM Hemi's are configured as well ? Haven't heard of this failure on the 4th gen Rams, should we be concerned about this.
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  #34  
Old 11-16-2012, 06:55 PM
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That looks particularly nasty, is this how our RAM Hemi's are configured as well ? Haven't heard of this failure on the 4th gen Rams, should we be concerned about this.
Eagle engines are what powers the 4th gen hemi Rams, so...
  #35  
Old 11-16-2012, 08:21 PM
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not what i was wanting to hear. been thinkin about gettin a 2013 when the 8 speed tranny comes out
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  #36  
Old 11-16-2012, 08:56 PM
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Keep in mind that this isn't a common failure, and that picture is a worst case scenario. Most times we've must found that the slider spring has failed but no damage has been done, but we only know when this happens when the timing cover is pulled.
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  #37  
Old 11-16-2012, 08:59 PM
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So will this start happening more and more as the 4th gen RAMs age ??? If this is an issue I would rather take care of it now while everything is running smoothly. Any good aftermarket parts available, like beefed up tensioner and timing chain ??? I really hate hearing about stuff like this, first the pinion nut and now this
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  #38  
Old 11-16-2012, 09:40 PM
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thanks for the heads up!
  #39  
Old 11-16-2012, 10:07 PM
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I've heard of this rumor also, an instructor at the chrysler training center mentioned that 1 or 2 5.7l challengers in the area had some major timing chain failure and destroyed the engines, that was about 6 months ago. I haven't seen anything at the dealer yet.

About a year ago I replaced a timing chain tensioner on a 2009 hemi ram because of a rattling noise, don't know if its related.
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  #40  
Old 11-16-2012, 11:54 PM
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Quote:
Originally Posted by RamTech View Post
As most of you already know, I am a Ram, Dodge, Chrysler, Jeep tech at a dealership. Occassionally, we talk to Chrysler technical support and hear a few rumors about upcoming recalls, bullitens, and things that just happen.

The other day a coworker was speaking to a tech rep and it seems that some of the newer Hemi engines have a problem with the timing chain guide/tensioner assembly and it's causing the chain to fail in some fashion and evidently it's causing catastrophic engine failure (valves and pistons coming together at high speed).

Now, when asked what "newer" meant, the rep says it is unclear at what point these guide assemblies were installed but he did say that the part is a redesign that was intended to save money. Looks like that's going to backfire.

As of this point, it is also unclear what will be done to identify affected vehicles and what will be done to remedy the problem. I don't know if this is a problem limited to the 5.7 engines or if the 6.4 is also included. I will keep an eye out for more info on this matter and post anything I find. Keep in mind that though the source is a Chryslelr tech rep, it's still just a rumor at this point and I have yet to see this failure for myself.

Hi, Im more active on the Charger and Challenger Z, it seems like this has been an issue we have been seeing on 5.7L only and from around 2010 models on up. I have seen this for the past year on the Challenger site. Seems like alot are switching over to the 6.1L timing set FYI
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