SS Specific Service Issues/Repairs Service/Repairs specific to the SS. Turbo-Brembo Brakes-2.0 Engine-Limited Slip Differential-Programmable Display-MU3 Transmission

2.0 Timing Chain Problem at 61,000 Miles?

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Old Nov 14, 2017 | 10:58 PM
  #41  
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If the dot on the balance shaft sprocket is at 0600 then that white spot on the timing sprocket is the mark. Judging by the oil drip it is not at 0600.

Old Nov 15, 2017 | 09:23 AM
  #42  
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That spot is on the spacer washer, the crank sprocket will have a dot in it at 5:00 o’clock the keyway will be at 12:00 o’clock




Mine if I recall was at 12:00 o’clock for #1 Piston TDC



Last edited by Oldblue; Nov 15, 2017 at 02:20 PM.
Old Nov 15, 2017 | 11:45 AM
  #43  
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Now this is strange; more than one illustration in Mitchell OnDemand 5 has the keyway at 1200 when installing the chain. The mark on the balance sprocket is at 0600 with the keyway at 1200.




Old Nov 15, 2017 | 02:20 PM
  #44  
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Right !

Balance shaft sprocket mark at 6:00
Timing chain sprocket mark at 5:00
Crankshaft keyway at 12:00
Old Nov 15, 2017 | 02:38 PM
  #45  
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OK. There was a thin washer covering up the crank sprocket. With the cam sprockets timing marks still lined up, I found the red link clearly half a link off the white dot.


Old Nov 15, 2017 | 03:50 PM
  #46  
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So you’re lined up ready to, swap out that chain!
Old Nov 15, 2017 | 04:11 PM
  #47  
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Originally Posted by Oldblue
So you’re lined up ready to, swap out that chain!
Yes, indeed. After finally getting to this point, I'm just glad I didn't find the red link lined up with the white dot. I'll start taking it all apart, place the order, and be cleaning and prepping all the miscellaneous stuff I had to remove while waiting for the box of parts to arrive.

Old Nov 15, 2017 | 07:46 PM
  #48  
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Yep, relief to know you really have found the problem.
Old Nov 16, 2017 | 03:39 PM
  #49  
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I didn't plan on being back so soon, but I just wanted to let you all know I found the root cause of the problem--the top bolt hole of the timing chain guide has a big crack. I imagine this could have been a disaster had I continued to drive the car for any length of time after the check engine light came on and that end of the guide had broken off completely. Who knows what the chain would have done. Whew...

BTW, I haven't looked for that missing chunk of guide, but it's probably all ground up by now anyway.



Old Nov 16, 2017 | 06:18 PM
  #50  
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Mine was cracked also at 62,000 miles and the second one was intact at 150,000.



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