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Bottom end break down

Discussion in 'A3/S3 Forum (8L Chassis)' started by S3featesV9, Jan 31, 2011.

  1. S3featesV9
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    S3featesV9 Active Member

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    [Jan 31, 2011]
    Nice casual drive to work and bang goes the bottom end! Rattles like mad when even on tick over and obviously worse whilst driving!

    Anyone had or know of this on and a3/s3 and can give me an expected cost I'll get to have it fixed?

    Just my luck!

    Cheers
    #1
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  3. Andrew@A.L.D
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    Andrew@A.L.D May add NOS to 600+bhp?

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    [Jan 31, 2011]
    If it still runs and rattles it sounds like the oil pump has gone causing the big ends to go.

    Not cheap if your getting someone else to do the work for you

    You could do what welly did and get a good second hand engine and fit that yourself or you could do what i did and rebuild it with performance parts yourself, but not that cheap
    #2
  4. Essflee
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    Essflee Well-Known Member

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    [Jan 31, 2011]
    Sorry to hear mate, haven't heard of a bottom end going.

    Was your car mapped ?
    #3
  5. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    [Jan 31, 2011]
    They go all the time, usually because of low oil pressure, caused by crappy maintenance and the dreaded sludge.

    At the very least its going to need a crankshaft, and a set of rods, then a full bearing set, new rings and a new oil pump
    #4
  6. Andrew@A.L.D
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    Andrew@A.L.D May add NOS to 600+bhp?

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    [Jan 31, 2011]
    Same thing happened to mine.

    Only had the car 8 months, oil light flickers on and off, took the sump off and found the drainer blocked and metal from the bearings in the sump, The engine was removed and found that the crank and rods were damaged also small scores in the bore.

    Thats by i built the stroker motor, the TDI crank was cheap and mint and then got the rest from I.E
    #5
  7. G60DAN
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    G60DAN Member

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    [Jan 31, 2011]
    Sorry to hear that's sounds like what happened 2 me last friday but don't know if it top or bottom end.
    #6
  8. S3_EKO
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    S3_EKO New Member

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    [Jan 31, 2011]
    Sorry hear your bad news, secound hand motors dont seem to be cheap for these car :( so i would say a rebuild would be the better option with uprated parts. But it does all depend on budgets ect.

    Mike
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  9. Pat
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    Pat Member

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    [Feb 1, 2011]
    Dont know if you need but i have a crank, rods pistons etc etc.. all it great working order..
    #8
  10. S3featesV9
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    S3featesV9 Active Member

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    [Feb 1, 2011]
    cars been put into air cooled engineering, a vw/audi specialst near me in oxford. rang me this morning.

    Its coming from top end/gearbox ares apparently. So looks like dual mass/release bearing issue!

    Only had new clutch assembly fitted 20000 miles ago, surely that shouldnt be worn out totaly already? i dont ride the clutch often, maybe in traffic!

    car is remapped yeah, only stage 1 though?
    I serviced it about 4k miles ago, all filters and oil, apart from haldex. then a health check so im quessing oil level was ok.

    Im hoping its the clutch, although i had no pedal vibrations, or excess travel!
    #9
  11. s3gazz
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    s3gazz Active Member

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    [Feb 1, 2011]
    soz to here about it mate.
    my car ratels when ticking over and it makes a nocking noise too

    how do u no when oil pump is ready to go or water pump tar
    #10
  12. S3featesV9
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    S3featesV9 Active Member

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    [Feb 1, 2011]
    Just got the most unwanted phone call from air cooled engineering! turns out.....its my Gearbox, float, flywheel....so clutch and release bearing too!
    Nice way to spend £2500?!
    #11
  13. s3gazz
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    s3gazz Active Member

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    [Feb 1, 2011]
    what happened before it went mate sid afects
    #12
  14. S3featesV9
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    S3featesV9 Active Member

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    [Feb 1, 2011]
    ive had a ticking noise for ages, coming from airbox area above gearbox.

    driving along dual carriage way and you get a noise like something is wacking the underside of your car. then whichever gear your in....booom goes the cog. so in my case i had no 4th.
    #13
  15. s3gazz
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    s3gazz Active Member

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    [Feb 1, 2011]
    if hop all goes well for ya mate

    mine just makes a nocking noise when ticking over for gear box area and it judders
    #14
  16. S3 TAM
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    S3 TAM Pocket now empty

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    [Feb 1, 2011]
    Mine does that too but my techy checked it out and said thats the noise a triple plated paddle clutch and solid mass flywheel makes....
    it's been making that noise for nearly 2 years never got better or worse.
    Last edited: Feb 1, 2011
    #15
  17. S3featesV9
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    S3featesV9 Active Member

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    [Feb 1, 2011]
    mines never got any worse or better either, until last night. it was a really suddon, no actual give away signs that the gearbox was going...just the everyday rattle!
    #16
  18. s3gazz
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    s3gazz Active Member

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    [Feb 1, 2011]
    so thats ment to do that then on my car i guess
    #17
  19. S3featesV9
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    S3featesV9 Active Member

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    [Feb 1, 2011]
    yeah seems to be normal. ill soon tell when i pick it up after having all new parts fitted. it it doesnt make the noise then no. but ill be sure to post on here and let everyone no what the outcome is.

    Im hoping it sorts all ticking, knocking noises in all fairness.

    According to the specialist garage, first sign of gearbox/float failure is clutch pedal judder/vibration whilst sat in neutral and going though the gears, like in traffic. or if really bad, you can tell during normal driving conditions.
    #18
  20. s3gazz
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    s3gazz Active Member

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    [Feb 1, 2011]
    thanks mate
    theres nothing wrong with my clutch abit stiff thats it like no juder or vibration in it
    #19
  21. S3featesV9
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    S3featesV9 Active Member

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    [Feb 17, 2011]
    as i had mentioned id let you know if i still get the 'normal' noise coming from the gearbox after having the new one fitted....i now have no, not any sort of noise, juddering, ticking noise. So it being the noise a dual mass flywheel makes is incorrect!

    near gearbox, flywheel and clutch has made a big difference, probably nothing to do with it, but now seeing 30.2 mpg compared to the 26.6. hasnt even been reset. weird!
    #20
  22. alijames
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    alijames Active Member

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    [Feb 18, 2011]
    I feel for you. I thought I was unlucky with a replacement clutch slave cylinder dying after just 14k, I'm now relieved it was not the gearbox!

    Where are you in Oxford by the way? I live in Bicester, but work in Oxford city centre. Hoggy is also in Oxford.

    Cheers,
    #21

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