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Broken Camshaft Sprocket Bolt

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Old Feb 8, 2019 | 05:40 PM
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Default Broken Camshaft Sprocket Bolt

Has anyone seen a broken Camshaft Sprocket Bolt?
 
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Old Feb 8, 2019 | 05:41 PM
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Originally Posted by Ridetothehill
Has anyone seen a broken Camshaft Sprocket Bolt?
m8 👍 ?
 
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Old Feb 8, 2019 | 05:43 PM
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Originally Posted by cdonis
m8 👍 ?
Yes M8
 
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Old Feb 8, 2019 | 05:46 PM
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Will installing a new bolt from camshaft drive retention kit part #25566-06 be necessary?
 
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Old Feb 9, 2019 | 10:20 AM
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Can't say much on the fix, I'm staying with the tc engine. However I beleive there has been some issues with the m8 breaking the bolt.
 
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Old Feb 9, 2019 | 03:57 PM
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So …. let's get this straight , the twin cam engine went through this in the first year of production , there were a number of incidents , followed by a product improvement campaign . Dealerships were repairing them all , I worked for one , we fixed a lot of them , the fix also included a splined cam sprocket.

So this is happening again ???

I'm so out of touch with the internal struggle at a dealership
 
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Old Feb 11, 2019 | 08:03 AM
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I have seen Steve at GMR post a few pics on his Facebook page and on another forum about this issue, I'm not exactly sure what he is doing to remedy the situation but a phone call to him may help you get your's resolved
 
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Old Feb 11, 2019 | 08:33 AM
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I picked up the "Camshaft Drive Retention Kit" at my dealer the other day. Two bolts two washers $5.60. Cheap insurance. The master tech and shop forman said he never reuses them and this is what the problem may be. In fact, he never reuses any torqued fastener.
 
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Old Feb 12, 2019 | 05:35 PM
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Sounds like some GM "south of the border special" torque to yield crap. Interesting.
 
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Old Jun 24, 2020 | 12:20 PM
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Originally Posted by Ridetothehill
Has anyone seen a broken Camshaft Sprocket Bolt?
I sheared off my cam crank bolt last night using a brand new bolt (01 DYNA). It would seem my torque wrench isn't calibrated. But 15lbs was pretty low on its gauge so i think i'll use my IN LBS wrench at like 180 in lbs where thats a little closer to the middle range. Hoping to get the bolt out today, got a hole drilled in it last night but needed to buy a bolt extractor. Hopefully that RED locktite didn't get it stuck too much. Might have to hit it with the propane torch for a sec.
 
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