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Discussion Starter · #1 ·
Good morning everyone, so yesterday was the start of my teardown of my 4C due to an accessory belt fraying and tearing while driving (didn’t break). I’m currently now waiting for my cam and crank lock tooling to complete the job. I think I’m about to rush deliver a few other components since I’m here(Novitec downpipe, gfb diverter valve). All parts used are oem parts for the belt drive system, the parts were purchased through moparpartsonline.com for about 360 dollars. So here’s some photos.
 

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Discussion Starter · #6 ·
How in the hell did it get frayed?
What happened was I had launched the car and I believe the tensioner pulley gave way and the slack in the belt built up by the alternator and when it tightened back down it caused the belt damage. I found belt hair in the alternator so that’s what I’m going with.

but I have a new tensioner so I should not have this issue again hopefully.
 

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Excellent photos, these type of photos always remind me of Terminator

As does that jumping, turning and tumbling robot posted last week. Not long now given the progress in drone technology to act as air support.

Back to the story....The tensioner pulley was the notorious weakness of the Twinspark engine, not the belt. Purchasing a quality tensioner pulley of the metal wheel variety rather than one made of plastic helped with longevity. I haven’t yet purchased a tensioner so can anyone chime in with a description of their original and replacement. Are they metal or plastic wheels?
That said, on the Twinny, a failed tensioner on the accessory belt can snap the cam belt as the accessory belt flails around and catches in the cam belt. Get everything associated with your belt change done at the same time, including the water pump. It’s false economy to skimp.
 

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My car is in the shop now having all belts, pulleys, and tensioner replaced under warranty. Car has been there since last Tuesday. I’ll have more info on all of this hopefully later this week.


Sent from my iPhone using Tapatalk
 

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Discussion Starter · #11 ·
As does that jumping, turning and tumbling robot posted last week. Not long now given the progress in drone technology to act as air support.

Back to the story....The tensioner pulley was the notorious weakness of the Twinspark engine, not the belt. Purchasing a quality tensioner pulley of the metal wheel variety rather than one made of plastic helped with longevity. I haven’t yet purchased a tensioner so can anyone chime in with a description of their original and replacement. Are they metal or plastic wheels?
That said a failed tensioner on the accessory belt can snap the cam belt as the accessory belt flails around and catches in the cam belt. Get everything associated with your belt change done at the same time, including the water pump. It’s false economy to skimp.
Thanks for the insight, I did get new tensioners for the accessory and timing belts as well as a new water pump.
Thankfully for us if the accessory belt does break its nearly impossible for it to affect the timing belt unless your upper timing belt cover is broke or missing. But thankfully we don’t have that worry.
 

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Discussion Starter · #12 ·
My car is in the shop now having all belts, pulleys, and tensioner replaced under warranty. Car has been there since last Tuesday. I’ll have more info on all of this hopefully later this week.


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Nice man!! I don’t have a dealer nearby the nearest dealer to me is Walnut Creek and that’s about a 6 hrs drive. I just fell out of warranty so it’s no biggie to me. I have a race pig that take most of my maintenance life so this is a nice change

the racepig...
 

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Nice man!! I don’t have a dealer nearby the nearest dealer to me is Walnut Creek and that’s about a 6 hrs drive. I just fell out of warranty so it’s no biggie to me. I have a race pig that take most of my maintenance life so this is a nice change

the racepig...
A sensible man. Nice Suby.
 

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Nice man!! I don’t have a dealer nearby the nearest dealer to me is Walnut Creek and that’s about a 6 hrs drive. I just fell out of warranty so it’s no biggie to me. I have a race pig that take most of my maintenance life so this is a nice change

the racepig...
I don’t know if it’s “nice” yet. We shall see. Parts arrive tomorrow. I’m still waiting on further info from the dealer. They’ve been going back and forth with FCA.


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Discussion Starter · #15 ·
I don’t know if it’s “nice” yet. We shall see. Parts arrive tomorrow. I’m still waiting on further info from the dealer. They’ve been going back and forth with FCA.


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Ahh, well I hope it works out in your favor!
 

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Discussion Starter · #16 ·
Update to the belt change. Cam/crank locking tool arrives tomorrow. And hopefully my downpipe will arrive the same day or day after. Excited to hear the car with the catless downpipe! Running.
 
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