Timing Chain Replacement
Timing Chain Replacement
I have a 2003 SLE with a 3.8. Guy at work was telling me horror stories about this motor shucking timing chainns at 75K and bending valves. Any truth to this? I have 74K on it.
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01bonneSC
- Certified Bonneville Nut

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1997 'maro (3.8L M5)
89 SkiDoo - Location: Sycamore, IL
Re: Timing Chain Replacement
AFAIK, never ever heard an issue.
Im at 170,000 on the stock chain.
These engines are *dang* bulletproof, minus the UIM on the N/A motors and the LIM gasket issues on N/A and 'charged motors(L36 and L67 respectively.)
http://www.pontiacbonnevilleclub.com/fo ... =53&t=3591
Sure he wasnt talking about an import motor? lol
Im at 170,000 on the stock chain.
These engines are *dang* bulletproof, minus the UIM on the N/A motors and the LIM gasket issues on N/A and 'charged motors(L36 and L67 respectively.)
http://www.pontiacbonnevilleclub.com/fo ... =53&t=3591
Sure he wasnt talking about an import motor? lol
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myfirstbonnie
- Resident Gearhead

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2015 Buick Enclave
2013 Buick Regal GS - Location: Hillsboro, Oregon
Re: Timing Chain Replacement
Nope, timing chains are not an issue on these motors.
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Bonneville92V688
- Certified Bonneville Nut

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Re: Timing Chain Replacement
The guy at your work has them mixed up. The early H-bodies with the LG3 3.8 has the timing component problems. They had nylon toothed cam sprockets that would wear down and throw the chain off, causing a serious problem.
Your 3800 will be fine for another 150k or so. It rarely happens, but I have heard of chains going on 3800s with more than 200k....they just eventually wear like many things do.
Your 3800 will be fine for another 150k or so. It rarely happens, but I have heard of chains going on 3800s with more than 200k....they just eventually wear like many things do.
2012 Grand Cherokee Overland Summit - Hemi
1996 Thunderbird LX - 3.8
1996 Thunderbird LX - 3.8
Re: Timing Chain Replacement
Could Be!!! I think he was talking about an older motor.
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00Beast
- Retired Site Developer

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Re: Timing Chain Replacement
Sounds like he was talking out of his rear w/o actually knowing what he was talking about...
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