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Cayman 987.1 ticking

It does sound as if the engine will need to be progressively stripped down to identify and correct the fault. Hopefully it is a cam follower and the resolution is fairly straight forward.

Putting it bluntly, it seems like the specialst that you used is pinpointing something that they can try and claim was not affected by their work. Their objetive is to avoid warranty cost. They are also putting you off by saying they cannot get to it for a month or so. If you involve another specialist at this time this would allow the original workshop another avenue of escape from any warranty claim.

The reality is that they stripped the engine down and it has lasted less than 100 miles before it failed again. To stand back and say the two faults are unrelated just does not stack up. It sounds as if you have a bit of a battle on your hands. Let us know, by forum or pm if there is anything we can do to help.

 
+1 on John’s comments above Andy.

It’s impossible to pinpoint what’s happening from your videos, but it does sound more top-end than bottom-end to me. If as Andrew has suggested you can employ some type of listening device you may be able to determine if the noise source is predominantly left or right side [cam/cam follower] rather than central [crank bearings].

Jeff

 
Thanks everyone for the comments earlier. Just wanted to post an update. A bit lost on what to do...

I did stop at another Porsche specialist to have a quick listen, and they said they expected it was something bottom end. I then dropped it back to the original specialist, and after a bit more diagnosis (without stripping the engine down), they said there are metal bits in the oil and it was likely is a bearing breakup and crankshaft related. It will require a full engine rebuild and depending on the extent of damage to the crankshaft, it will need a new one unless the damaged is light enough for it to be reconditioned.

A bit at a loss of what to do here. There was no ticking, and certainly no metal in the oil, when I first brought it to them. Everything developed within 100 miles or less from them having the engine out to do the cylinder relining. Thier position is that they didn't touch this part of the car and therefore not under warranty. Perhaps that's the case, but also seems like an unprobable coincidence.

Thier estimate on cost is about 7k depending on what is found. Which, honestly, I can't afford. I was planning on selling the car after the bore scoring was fixed. Due to a bit of an ongoing battle with cancer, I'm not working full-time anymore and needed the cash from selling the car to pay bills.

If anyone has any thoughts/advice, I'd love to hear.

 
Hi Andy,

Sorry to hear about your continuing problem. Unfortunately metal in the oil [did they check the oil filter too?] isn’t great news and merits further investigation, meaning an engine strip to locate the cause.

Although I can’t state this definitively, I can’t see how the cylinder relining could have been carried out without removing the crankshaft at least, and therefore disturbing the main bearings, although I suppose that it would be possible to leave the pistons and connecting rods in place, but it would make the reassembly tricky. Normally the pistons with connecting rods attached would be inserted from the top of the block, meaning that the big end bearings would have to have been split and therefore disturbing the bearings. On that basis I can only suggest that your specialist gives you a fully detailed account how they carried out all the work, both disassembly and subsequent reassembly.

For independent advice on this matter I can only suggest that you contact Hartech, a company very familiar with with rebuilding your 987.1s engine, including cylinder relining. https://www.hartech.org/

Hope you have some success persuing the matter, and be sure to keep us updated.

Jeff

 
Hi Jeff,

Thanks for the reply. Well, the pistons were changed. They had to be because of the bore scoring. Not entirely sure if the rods were replaced also, though.

Yes, I should have went to Hartech in the first place. They're a bit far from me, so I used local guys closer to London. Probably a mistake.

Andy

 
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