High mileage V8s - Timing Chain - It's only a matter of time
I just rolled 93k miles and cpo good till December. Will likely hold just fine till cpo runs out
. Figure I’d have these around just in case it starts happening….. worst case I sell the parts later on if not used.
Hi all,
I'm looking at a 2011 Cayenne S (4.8 V8, 130 k miles). The current owner is a mechanic who bought it with a timing-chain failure. He replaced the chains, guides, sprockets, seals, etc., but he used this bargain kit from eBay:
“OE Quality” brand, ~$210
Everything else (seals, bolts, gaskets) was sourced from FCP Euro, but the chains, guides, and VVT sprockets came from that generic kit. He showed me receipts for the parts; the truck runs and shows no codes right now.
Questions for the hive mind:
Thanks!
I'm looking at a 2011 Cayenne S (4.8 V8, 130 k miles). The current owner is a mechanic who bought it with a timing-chain failure. He replaced the chains, guides, sprockets, seals, etc., but he used this bargain kit from eBay:
“OE Quality” brand, ~$210
Everything else (seals, bolts, gaskets) was sourced from FCP Euro, but the chains, guides, and VVT sprockets came from that generic kit. He showed me receipts for the parts; the truck runs and shows no codes right now.
Questions for the hive mind:
- Has anyone here actually racked up any serious mileage with one of these no-name Chinese kits?
- Are the guides and sprockets in these kits known time-bombs, or is the fear overblown?
- If you were in my shoes, would you:
- walk/run away,
- buy it but budget for an IWIS/Febi re-do ASAP,
- or trust the repair and drive it?
- walk/run away,
Thanks!
Isn't that the way it always goes? In another 18 months I'll have around 115-120k miles on it, hopefully I can get it covered. It's strange to hope for something to break but I do have my fingers crossed that I can get this and the air suspension fixed while the car is still under CPO.
I've got a 2014 TS & i hear things at start up, it goes away a bit but never fully stops clacking (slightly) - someone suggesting lifters....
My 14TS started to make a grinding noise in lover RPM under acceleration. First I thought that is't a diff, but the noise was even in neutral from the front of the engine. Worst noise was around 2,000 RPM. I'm not sure if it's the guides . I had it open to reseal timing cover last year and they looked good. What else would be good to change? Water pump? Planing to open it over the weekend.
I bought a 2013 S with 128k miles on it, with the CEL showing with some other fault codes that went away after replacing the battery. My neighbor has PIWIS, so we looked at the codes and checked timing deviation. I've replaced the cam sensor on bank 1 and still have the P0344 and P0016 codes, bank 1 deviation is in the 20.000 range and bank 2 has 0.000 deviation. Has anyone checked timing deviation prior to doing a timing chain guide replacement?
Symptoms: Long crank, PSM, ***, faults and CEL on
Symptoms: Long crank, PSM, ***, faults and CEL on
I bought a 2013 S with 128k miles on it, with the CEL showing with some other fault codes that went away after replacing the battery. My neighbor has PIWIS, so we looked at the codes and checked timing deviation. I've replaced the cam sensor on bank 1 and still have the P0344 and P0016 codes, bank 1 deviation is in the 20.000 range and bank 2 has 0.000 deviation. Has anyone checked timing deviation prior to doing a timing chain guide replacement?
Symptoms: Long crank, PSM, ***, faults and CEL on
Symptoms: Long crank, PSM, ***, faults and CEL on
sounds like a timing chain job to me! I had similar deviations before I did the job. What does the engine sound like how does it drive. What are all the symptoms.
Michael,
We purchased our 2012 in 13 with 14k. Have used Mobil1 and we are in the 100k range. At the last oil change I sent a sample to Blackstone Lab. I have been changing every 10k and asked if this appeared to be an issue. They were very impressed and recommended to do the same. I am generally a 5k guy and my go back to that with this car.
The short, Liquid Moly, nor additives are not necessary. If you want to nerd out, watch The Motor Oil Geek. He is a Tribologists with extensive experience and a Porsche owner as well.
We purchased our 2012 in 13 with 14k. Have used Mobil1 and we are in the 100k range. At the last oil change I sent a sample to Blackstone Lab. I have been changing every 10k and asked if this appeared to be an issue. They were very impressed and recommended to do the same. I am generally a 5k guy and my go back to that with this car.
The short, Liquid Moly, nor additives are not necessary. If you want to nerd out, watch The Motor Oil Geek. He is a Tribologists with extensive experience and a Porsche owner as well.
Starting this post about halfway through the timing chain replacement on the 2013 S and have successfully stripped 3 timing cover screw heads, found 2 broken valve cover screws (someone’s been in there before), and have had several moments thinking ‘That’s why they say ‘engine out’ for this job’.
Through all of those moments, my neighbor (shoutout to Greg who has helped me with several of these types of projects) and I have the new timing chain on and in place to re-install the timing cover and begin the timing process. Before embarking on this project, keep in mind that you will need the cam-timing tool set and the Porsche Vibration Damper Counter Holder, which I now have both and if you're local or close to Tulsa, OK, I'd be happy to loan them out. It would be a good idea to order the timing cover hardware which is approximately 30 screws of varying sizes (all available in the shop manual), outside of the direct replacement parts that you’d expect to order. Doing this job is fairly involved but can be done without pulling the engine. I would be happy to share any pictures or notes of specific things anyone has questions about various points of the process.
More updates after we get the timing cover, timing set, and the rest of the project buttoned up-
Through all of those moments, my neighbor (shoutout to Greg who has helped me with several of these types of projects) and I have the new timing chain on and in place to re-install the timing cover and begin the timing process. Before embarking on this project, keep in mind that you will need the cam-timing tool set and the Porsche Vibration Damper Counter Holder, which I now have both and if you're local or close to Tulsa, OK, I'd be happy to loan them out. It would be a good idea to order the timing cover hardware which is approximately 30 screws of varying sizes (all available in the shop manual), outside of the direct replacement parts that you’d expect to order. Doing this job is fairly involved but can be done without pulling the engine. I would be happy to share any pictures or notes of specific things anyone has questions about various points of the process.
More updates after we get the timing cover, timing set, and the rest of the project buttoned up-



