Q7 - Broken fragments of crankshaft shells - repair or scrap

Q7 - Broken fragments of crankshaft shells - repair or scrap

Author
Discussion

e4Audi

Original Poster:

11 posts

8 months

Thursday 16th November 2023
quotequote all

e4Audi

Original Poster:

11 posts

8 months

Thursday 16th November 2023
quotequote all

e4Audi

Original Poster:

11 posts

8 months

Thursday 16th November 2023
quotequote all

e4Audi

Original Poster:

11 posts

8 months

Thursday 16th November 2023
quotequote all
Hi all. Thanks for your help. I've uploaded a couple of photos of the fragments. The other thing I should have mentioned is that the car previously had the code 'loss of crankshaft synchronisation'. The mechanic who looks after it always put that down to a bad sensor given it was always running perfectly. Still at a loss of what to do at the moment... Every option seems a bit of a minefield

fttm

3,729 posts

137 months

Thursday 16th November 2023
quotequote all
You need to get the sump off and see what's going on , bottom end rebuild is futile without finding the cause . Reckon another engine will be the simplest route imho.

e4Audi

Original Poster:

11 posts

8 months

Thursday 16th November 2023
quotequote all
Thanks mate. And would you go down route of getting it reconditioned or getting a second half engine fitted?

fttm

3,729 posts

137 months

Thursday 16th November 2023
quotequote all
Complete secondhand engine .

e4Audi

Original Poster:

11 posts

8 months

Thursday 16th November 2023
quotequote all
How do you go about that? Do places source and fit? My bloke says he can fit but I have to source because he doesn't want to be liable in case the engine is a dud. I think I can sell for 7, 8k as a non runner but it's worth over 20 without issues. Does a new second hand engine impact on the value of the car? Sorry for all the questions

stevemcs

8,719 posts

95 months

Thursday 16th November 2023
quotequote all
I would guess the crankshaft correlation was the beginning, usually it means the timing is out, chain stretch, tensioner starting to fail etc

As for the engine if its worth 8k scrap or 20k running take the scrap, by the time you have swapped bits over, got an engine, paid labour and crossed you fingers it starts your going to be into 10k.

As for where to star, someone like - either a specialist breaker or Synetiq.

Export56

557 posts

90 months

Thursday 16th November 2023
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fttm said:
Complete secondhand engine .
Never understand fitting used engines, an engine of unknown parentage, removed by a couple of lads at a muddy breakers, what's the chance of it being better than a full service history original engine that failed?

stevieturbo

17,305 posts

249 months

Thursday 16th November 2023
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Export56 said:
Never understand fitting used engines, an engine of unknown parentage, removed by a couple of lads at a muddy breakers, what's the chance of it being better than a full service history original engine that failed?
Years ago when engines were cheaper, cars where cheaper, things were simpler...this whole process was also simpler.

It is a tough call. Compounded yes by finding an actual good engine, although there will be plenty out there in crashed vehicles etc

But then there is the massive hurdle of finding someone reliable and competent to do the swap. IMO find that first, somewhere who will guarantee, and then you might be onto something

Unless it is ridiculously difficult, the sump still needs to come off to get a better idea of what's going on.

The photos aren't great, TBH not convinced that is bearing material, but just too dark to see

Tyrell Corp

256 posts

22 months

Friday 17th November 2023
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I remember this fix or scrap dilemma with an old van, and sourced a motor from a local breakers.

Asked if he had heard it running and he assured me it was 'sweet as a nut'

Paid up front and he told me it would be removed from vehicle by next week and wait for the call..two and a bit weeks later he calls me to refund - he had just noticed a big hole in the block where the con rod had let go !

fttm

3,729 posts

137 months

Friday 17th November 2023
quotequote all
Export56 said:
fttm said:
Complete secondhand engine .
Never understand fitting used engines, an engine of unknown parentage, removed by a couple of lads at a muddy breakers, what's the chance of it being better than a full service history original engine that failed?
Gotta be the way to start , contact all Audi indys/breakers see what's around then weigh up the pros and cons .There is an engine out there somewhere ,simple swap .

e4Audi

Original Poster:

11 posts

8 months

Saturday 23rd December 2023
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Thanks for all the views and advice everyone. I wasn't confident about getting the engine repaired and I definitely wasn't confident about locating a decent second hand engine and then getting it fitted by someone decent so sold it as a non-runner. I managed to get 10k and as it was pointed out, I would have ended up spending that to replace. Lease will be the way forward for me I think! 😂