Timing chain failure on the Dodge Challenger - Page 36 - Dodge Challenger Forum: Challenger & SRT8 Forums
Dodge Challenger Forum Dodge Challenger Forum
 

» Featured Product
» Auto Insurance

» Wheel & Tire Center

Go Back   Dodge Challenger Forum: Challenger & SRT8 Forums > General, Performance, and Technical > General Challenger Discussion > Challenger Issues & Problems

ChallengerTalk.com is the premier Dodge Challenger Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
  #351 (permalink)  
Old 06-26-2012, 08:40 AM
Hal H's Avatar
Super Moderator
 
Join Date: Aug 2008
Location: Portland, OR
Posts: 7,074
Photos: (0)
Thanks: 1
Thanked 734 Times in 519 Posts
Feedback Score: 0 reviews
Originally Posted by Holeshot View Post
I wonder why the 2012 6-speed is rated 5 HP higher than the automatic?? Also, it looks like the PCV system has been redesigned, compared to the earlier years that I saw here in the catch can installation threads. I bought an air compressor water separator for it but not installing until I find out if 2012s have been cured.
All years of the 5.7 / 6-speed were rated higher from '09 onward.

Different exhaust system (although '11+ cars exhausts appear to be more similar auto vs. 'stick) which is louder and had less back-pressure and incorporates an H-pipe cross-over vs. the 'auto version. There's also more aggressive spark timing on the 6-speed cars, which necessitates 91 octane to get peak performance as well.

The automatics had different exhaust (and rear resonators) to compensate for the effect on sound MDS creates when in operation. In the earlier years '09-'10, the 'autos had the suitcase muffler, which changed to the current setup used since the '11s came out.

Interestingly enough, the SRT models also used a different exhaust, but the hp/tq ratings were the same whether it was the 6.1 or 6.4 with either tranny.
__________________
2009 R/T 27J pkg (6 speed MT) ordered 7/17/08, built 10/23/08, home on 11/13/08

Eibach Sportline Suspension
Hotchkis Sway Bars
Nitto 555 Extreme 265/50-18"
392 Cam / DS CMR tune
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #352 (permalink)  
Old 06-26-2012, 09:06 AM
rt2010mm's Avatar
Junior Member
 
Join Date: Oct 2011
Location: Ontario, CA
Posts: 21
Photos: (0)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Just happened last Saturday...

1. 38,500 miles
2. going 80 mph on freeway
3. 2010 r/t auto

At the dealer right now taking it apart to check what happened. got the lifetime warranty. They haven't told me yet what it is, should I suggest to them that it may be the timing chain, or should I let them tell me what they "found"?

Last edited by rt2010mm; 06-26-2012 at 09:06 AM. Reason: added year of car
Reply With Quote Quick reply to this message
  #353 (permalink)  
Old 06-26-2012, 10:15 AM
Senior Member
 
Join Date: Feb 2009
Location: North of Dallas
Posts: 5,890
Photos: (1)
Thanks: 164
Thanked 303 Times in 239 Posts
Feedback Score: 0 reviews
Originally Posted by raVenX View Post
Personally, I have ruled out oil. If you look through the list of people affected thus far, you'll note that many of them stated that they changed oil as required. Even Desert Bum stated that he changed oil, the correct oil, religiously, and it still happened. Using the wrong type of oil will cause the MDS feature not to function, and it functioning is a common factor.

The common factors right now are:

1. Challenger 5.7L, automatic trans. and MDS

2. Highway speeds

3. MDS engaged

4. Roughly 40,000 miles on the odometer
I'm not talking about oil changes or even quality of the oil. What I was implying is that it could be something as simple as certain parts/systems on the engine (namely the chain and/or tensioner) just may not be liking the 5w20 oil...or maybe that oil grade is right on the threshold where those parts are happy (it could go either way...no troubles whatsoever or just enough to bring it down). Maybe if you are trying out 0w20, it's like a double whammy of odds working against (like eating a steak isn't going to kill you outright, but it certainly worsens your chances...doesn't stop me from indulging, though )?

I understand the mds needs a certain oil weight to be operational. That just makes it harder to distinguish if it is the hardware or the oil the hardware needs that is the actual culprit. Do the 6-spd manuals use the same 5w-20 or something thicker? If all manual drivers suddenly switched to it, would they start dropping like flies, too (relatively speaking in the context of auto RT's that are breaking down)? It's a question that could never be answered just by the logistics of it all, but it doesn't mean it is irrelevant.
__________________
http://www.challengertalk.com/forums/signaturepics/sigpic6929_4.gif

09 Challenger R/T automatic...4 tires, stick-on convex mirror, seats

It's not that I really needed 370 hp...but having 150+ hp riding shotgun at a moment's bidding w/o a 6000 rpm moonshot is what makes me feel like I'm in the right car for me. The roar of a v8 seals the deal!

The Google keyword is "ethanol-free gas". The truth is coming to light. Check out http://pure-gas.org/

Last edited by randycat99; 06-26-2012 at 10:22 AM.
Reply With Quote Quick reply to this message
  #354 (permalink)  
Old 06-26-2012, 10:56 AM
LETSJET's Avatar
Senior Member
 
Join Date: Jul 2010
Location: Las Vegas, Nevada & Lampasas, Texas
Posts: 1,243
Photos: (2)
Thanks: 1
Thanked 77 Times in 54 Posts
Feedback Score: 0 reviews
I dis-abled the MDS on my 2010 with a predator, sounds better. Should everyone just do a timing chain change at 30,000 miles as preventative maintenance? Is there an aftermarket timing change that would eliminate this issue? Seems like Dodge would eventually do a TSB on a recommended timing change interval when they have conclusive evidence that the current timing change is a weak link. What are owenrs thoughts on this impending issue? I have an auto and a 6 speed, is it a factor on the 6 speedds also?
__________________
2010 HEMI ORANGE R/T auto
Mopar hood struts
Billet Technology MOPAR nose badge
Mopar Dodge wheel caps
DRL's enabled
Mopar Chrome shifter T-handle
Corsa Xtreme Exhaust
MOPAR cold air intake
Richard Petty Tower Strut Brace
Mopar Bight Pedal kit

2010 FURIOUS FUCHSIA R/T Classic 6 speed
Mopar hood struts
Billet Technology HEMI nose badge
Mopar Dodge wheel caps
DRL's enabled
Skip Shift eliminator
Blastin Bob's Resonator Eliminators,(awesome!)
K & N drop in air filter

2011 Dodge Ram 1500 Quad SLT
Reply With Quote Quick reply to this message
  #355 (permalink)  
Old 06-26-2012, 11:09 AM
Lifetime Premium Member
 
Join Date: Apr 2011
Location: Brooklyn Park MN
Posts: 809
Photos: (0)
Thanks: 49
Thanked 89 Times in 71 Posts
Feedback Score: 0 reviews
Originally Posted by rt2010mm View Post
Just happened last Saturday...

1. 38,500 miles
2. going 80 mph on freeway
3. 2010 r/t auto

At the dealer right now taking it apart to check what happened. got the lifetime warranty. They haven't told me yet what it is, should I suggest to them that it may be the timing chain, or should I let them tell me what they "found"?
If it's not too late, try to get some close-up pics of the broken parts, there are a few people on the forum here that would really like to see how the parts are breaking on other cars than their own. Thanks
__________________
Reply With Quote Quick reply to this message
  #356 (permalink)  
Old 06-26-2012, 11:11 AM
raVenX's Avatar
Lifetime Premium Member
 
Join Date: Feb 2009
Location: Off the rails on a crazy train
Posts: 3,535
Photos: (0)
Thanks: 18
Thanked 250 Times in 76 Posts
Feedback Score: 2 reviews
Originally Posted by rt2010mm View Post
Just happened last Saturday...

1. 38,500 miles
2. going 80 mph on freeway
3. 2010 r/t auto

At the dealer right now taking it apart to check what happened. got the lifetime warranty. They haven't told me yet what it is, should I suggest to them that it may be the timing chain, or should I let them tell me what they "found"?
I can't imagine it would make any difference one way or the other if you told them or not.

Thanks for checking in with your report.

Keep us informed of the progress, your dealer experience, what they tell you, what they replace, etc.
__________________
Reply With Quote Quick reply to this message
  #357 (permalink)  
Old 06-26-2012, 11:24 AM
Senior Member
 
Join Date: Jul 2011
Location: South Carolina
Posts: 459
Photos: (0)
Thanks: 3
Thanked 12 Times in 11 Posts
Feedback Score: 0 reviews
Has anyone examined the timing chain on a high mileage, highway driven, 5.7 challenger with mds that hasn't yet failed? May need to magnaflux it.

I'm curious to know if there are signs of stress cracks or metal fatigue on the chain or the start of any cracks in the tensioner.
Reply With Quote Quick reply to this message
  #358 (permalink)  
Old 06-26-2012, 01:00 PM
Senior Member
 
Join Date: Feb 2009
Location: North of Dallas
Posts: 5,890
Photos: (1)
Thanks: 164
Thanked 303 Times in 239 Posts
Feedback Score: 0 reviews
That's an interesting detail!
Reply With Quote Quick reply to this message
  #359 (permalink)  
Old 06-26-2012, 01:13 PM
Senior Member
 
Join Date: Feb 2009
Location: North of Dallas
Posts: 5,890
Photos: (1)
Thanks: 164
Thanked 303 Times in 239 Posts
Feedback Score: 0 reviews
Originally Posted by LETSJET View Post
I dis-abled the MDS on my 2010 with a predator, sounds better. Should everyone just do a timing chain change at 30,000 miles as preventative maintenance? Is there an aftermarket timing change that would eliminate this issue? Seems like Dodge would eventually do a TSB on a recommended timing change interval when they have conclusive evidence that the current timing change is a weak link. What are owenrs thoughts on this impending issue? I have an auto and a 6 speed, is it a factor on the 6 speedds also?
That sounds like a good pro-active strategy, even if it is just replacing with a new chain that is the same model. The cherry on top is if there was a designated "specialist" amongst our community who everybody could send their intact old chain to (with appropriate documentation to record the details of its history). If there are consistent wear patterns (or micro-crack fatigues as was described in an earlier post) that are unique to installations on the auto Challengers (as opposed to a typical, high mileage chain from a Hemi in the stick or any other Hemi Dodge models, altogether), that would be an important piece of the puzzle.

An additional perk (not that anyone should hope for this scenario) is if they replace the chain, and something still breaks in that area (like the tensioner), that would be important to know, as well.

There's probably enough info before us right now for Dodge to officially specify some highly-recommended pro-active measures...like a tensioner mechanism inspection at 30k? If high wear is noted, a new one should be installed. I'm guessing that still requires tearing off a bunch of stuff to get to, from being just a casual preventative inspection procedure? Anybody know more about such a process?...degree of labor and cost?

Last edited by randycat99; 06-26-2012 at 01:20 PM.
Reply With Quote Quick reply to this message
  #360 (permalink)  
Old 06-26-2012, 01:16 PM
MellowYellow's Avatar
Senior Member
 
Join Date: Jan 2010
Location: Hwy 410/401
Posts: 382
Photos: (0)
Thanks: 3
Thanked 14 Times in 9 Posts
Feedback Score: 0 reviews
It would be pretty sad you have to do a timing chain/tensioner inspection or change before you even do your spark plugs.
__________________
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

  Dodge Challenger Forum: Challenger & SRT8 Forums > General, Performance, and Technical > General Challenger Discussion > Challenger Issues & Problems

Tags
failure, problems, timing chain

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Dodge Challenger Forum: Challenger & SRT8 Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



« Clutch Noise HELP! | - »
Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
2013 Challenger Information Thread ResumeSpeed General Challenger Discussion 1299 04-17-2014 05:46 AM
2013 Dodge Challenger SRT8 ResumeSpeed 6.4L / 392ci (2011 - ?) 36 11-28-2012 03:44 AM
2013 Dodge Challenger ResumeSpeed General Challenger Discussion 8 09-02-2012 08:26 AM
New Dodge Challenger Racing jacket- large treyb Parts For Sale/Wanted/Trade 1 08-22-2012 02:14 PM
2012 5th Annual LX & Beyond Nationals (OH) July 21-22 Turbobuckeye Mid-West 29 07-23-2012 04:50 PM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -7. The time now is 08:15 AM.



Powered by vBulletin®
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.5.2
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.