Loud tappet like noises from Engine....

91k is alot of miles for a high performance engine, the engine looks in keeping with that , the plugs however look like they were well past their best a long time ago, i hope this isn't the case with the rest of the maintainence :o ....
 
Photos are rather small and non explanatory, but a piece of broken piston ring could do that trick... (not that it looks like pistonring particulary, but it can be a source of metal, mostly with very bad results...trust me, dont google....)
But that had to show up in a compression test. That is something I would have done first, especially with the valve cover coming off.

But with all shop repairs, you're dependant on the shop and their doing and explanatory story. To us you're just a middleman feeding us 3nd degree information. That makes this very hard to diagnose or to give solid advice.
Thats why I do everything myself. No questions unanswered :wink:
 
Having just re-read this thread I think there's some good learning particularly since nobody called the fault correctly including our collective expertise and the technicians with hands on the motor. Fact was there was no other symptom, prior issue or developing 'noise' and the noise itself wasn't completely typical of regular S54 catastrophic failures people mentioned. I'd certainly be asking for a compression test and a bore-scope inspection of cylinders before committing to work if faced with a similar situation in the future.

I'm still curious to know the source of the metal in the bore?
 
Yorkie Z said:
dannytheduck1985 said:
Buy a new lump and recon it.
Click to expand...

Surly by the time you buy a engine and pay for a rebuild it would be more than getting his fixed?
Click to expand...

That’s exactly what I thought. The engine already has had the big ends replaced. Apart from it being a 91k engine, with associated wear, the head gasket has been replaced, cams followers checked and any worn items replaced and any preventative maintenance done.

My own fault for a buying a high mileage car in the 1st place. Mad fool that I am. Anyway, we’re test driving a Cayman S in a couple of weeks :)
 
Ewazix said:
Having just re-read this thread I think there's some good learning particularly since nobody called the fault correctly including our collective expertise and the technicians with hands on the motor.
Click to expand...
Thats because its impossible to do over the internet with 3rd hand information.
I mean if I ask at what rpm a video is taken and that piece of info isn't shsred.....
What are the chances of getting stethoscope sound files of different parts of the head, sump, manifold, block etc.
To do that over the internet takes hours, while doing it in person takes 1 minute with a 5quid tool...

So thats the difference between internet dianose and irl diagnose: what is impossible for the one is dead easy for the other
 
Ewazix said:
Having just re-read this thread I think there's some good learning particularly since nobody called the fault correctly including our collective expertise and the technicians with hands on the motor. Fact was there was no other symptom, prior issue or developing 'noise' and the noise itself wasn't completely typical of regular S54 catastrophic failures people mentioned. I'd certainly be asking for a compression test and a bore-scope inspection of cylinders before committing to work if faced with a similar situation in the future.

I'm still curious to know the source of the metal in the bore?
Click to expand...

This tale is far from over....

Metal inside the bore is never a good sign... Where has the metal come from?

There doesnt seem to be any valve or piston fragmentation,so can only assume that something has come down the inlet..

If a piston ring fragment has come up the side of the piston,then the bore would be scrap.
 
GuidoK said:
Ewazix said:
Having just re-read this thread I think there's some good learning particularly since nobody called the fault correctly including our collective expertise and the technicians with hands on the motor.
Click to expand...
Thats because its impossible to do over the internet with 3rd hand information.
I mean if I ask at what rpm a video is taken and that piece of info isn't shsred.....
What are the chances of getting stethoscope sound files of different parts of the head, sump, manifold, block etc.
To do that over the internet takes hours, while doing it in person takes 1 minute with a 5quid tool...

So thats the difference between internet dianose and irl diagnose: what is impossible for the one is dead easy for the other
Click to expand...

All good points obviously.

I'm just sharing a thought that having read this tale I wouldn't allow major work to be carried out until basics like bore-scope examination and compression tests had been reported on, either or both of which would have identified the source before expensive trial and error parts replacements took place.
 
GuidoK said:
Ewazix said:
Having just re-read this thread I think there's some good learning particularly since nobody called the fault correctly including our collective expertise and the technicians with hands on the motor.
Click to expand...
Thats because its impossible to do over the internet with 3rd hand information.
I mean if I ask at what rpm a video is taken and that piece of info isn't shsred.....
What are the chances of getting stethoscope sound files of different parts of the head, sump, manifold, block etc.
To do that over the internet takes hours, while doing it in person takes 1 minute with a 5quid tool...

So thats the difference between internet dianose and irl diagnose: what is impossible for the one is dead easy for the other
Click to expand...

The video was taken at tick over. Guys, as awesome as the feedback has been. I’m of the mind that the guy might have not called it but the strip has highlighted issues that might have been otherwise missed. The metal fragment is a massive concern and thankfully the mechanic is hell bent on finding the source of said fragment.

My options were pretty limited as some garages I had sent the video to had said they wouldn’t touch it. I’m in Brum, outside of a main dealer (who I suspect were a bit clumsy with a spark plug) my options were very limited as it happened while I was at work. To be honest I was thinking of limping it back home and I’m glad the guy said, mirroring a lot of you here, don’t f**king drive it!

It’s in pieces, it can’t realistically go anywhere else so it’s stuck where it is.

If you could let me know what you would change / get replaced while the engine was stripped that would be super helpful :)

Again, cheers for the support!

T1b
 
Hi, does the M car have a disa valve? This has been known to launch itself through the engine on other models where fitted :?
Rob
 
if the motor is now removed, id pretty much do a full rebuild at this point..... uprate the vanos, engine mounts while your their, look at the followers and camshafts, the bearings have just been done, so literally go to town imo.
 
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