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2nd gear 'crunchy' from cold

Discussion in 'A3/S3 Forum (8L Chassis)' started by leshkin, Feb 14, 2010.

  1. leshkin
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    leshkin Speeding in reverse gear VCDS Map User

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    [Feb 14, 2010]
    Just wondering if there is something wrong with my gearbox as 2nd gear makes a crunching sound when the oil is cold. This happens when it is engaged two or three times and goes away after, what I assume, the gearbox oil warms up. Anyone has any ideas or is this normal in cold weather?

    I can avoid the crunch if I engage the gear very slowly, but that's not the way obviously.

    Before anyone asks - I do press the clutch fully :)
    Last edited: Feb 14, 2010
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  3. ikbenben
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    ikbenben Belgium S3 driver

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    [Feb 14, 2010]
    I have exactly the same problem :ohmy:
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  4. Westy
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    Westy Double Dark Side! Diesel & 8P

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    [Feb 14, 2010]
    What's your cars milage? Has the earbox oil ever been replaced or checked?
    #3
  5. jonny87
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    jonny87 Active Member

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    [Feb 14, 2010]
    i sometimes have a similar problem going into 4th, only when cold etc

    i have heard the word 'syncro' thrown around a bit on here but cannot remember what this relates to?

    am i in the ball park or am i talking utter bull?
    #4
  6. ikbenben
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    ikbenben Belgium S3 driver

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    [Feb 14, 2010]
    Mine has 72k miles and the oil is replaced 1500miles ago. Don't know how it was before but I only have the car for about 2 months and the first thing I did was changing all the fluids and filters.
    #5
  7. Dani_B19
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    Dani_B19 Audi-sports own special child.

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    [Feb 14, 2010]
    Got the same problem, gearbox oil changed about 5k ago, cant see it been the syncro-mesh like alot of people say because if it was wouldnt there be metal particals in the oil?

    Ive noticed that mine seems to crunch in cabin and not on the gearbox, its weird.
    #6
  8. jonny87
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    jonny87 Active Member

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    [Feb 14, 2010]
    i dunno mate those gears will take hell of a bashing before they start chipping etc

    also i havent changed my g/box oil yet, on me list of things to do lol
    #7
  9. leshkin
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    leshkin Speeding in reverse gear VCDS Map User

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    [Feb 14, 2010]
    Mine had it's changed about 10k ago during it's last long life service. My mileage is 88k.
    #8
  10. s3_kev
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    s3_kev Stage2'd!!!!!!

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    [Feb 15, 2010]
    mine used to do this then i blew the gearbox up and so had the complete box rebuilt by my local specialist, still did it after that and they supplied me gear oil for the box when i re-fitted it, left it a couple of months but never got any better so rang the specialists up and they came over picked the car up and took a look they told me they could'nt find any thing wroung so changed the oil again to somthing else and re-aligned the gear linkage again both of the things i had tried a few times previously but some how they have nearly cured it there is very mild notchy feeling at times but once warm its so smooth,
    so syncro seems very unlikely as my box was completly rebuilt and still done it, must be a mix between getting linkage correct and using the correct oil
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  11. Matt82
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    Matt82 Active Member

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    [Feb 15, 2010]
    second gear syncho dying. get some new gearbox oil in from VW/Audi and see if you can save it
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  12. Dani_B19
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    Dani_B19 Audi-sports own special child.

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    [Feb 15, 2010]
    Im sure its todo with the gearlinkage, had a play with mine the other day and there was some play but no real way of tightening them.

    Thinking about changing to short shift linkage's and new selector cables.
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  13. Matt82
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    Matt82 Active Member

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    [Feb 15, 2010]
    i doubt a linkage would have a problem only when its cold. dead synchos typically crunch when cold
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  14. Dani_B19
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    Dani_B19 Audi-sports own special child.

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    [Feb 15, 2010]
    Yeah but mines not really when cold, its when shifitng, like if i shift in a certain way its fine, if not then its notchy etc... so thats why i believe my linkage is knackered.
    #13
  15. MIKE GTR
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    MIKE GTR Member

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    [Feb 15, 2010]
    This is what we use in skylines to prolong the life (they have a weak 3rd to 4th syncro)

    Available from opieoils.co.uk

    Product Description and Technical Details

    [​IMG] Technical Details PDF
    REDLINES unique ShockProof™ Gear Oils are recommended for heavily loaded racing differentials and gearboxes which see shockloading.

    ShockProof™ contains a unique solid dispersion which cusions gear teeth to help prevent tooth breakage and allows the use of lower viscosities to give less drag and better shifting. Available as SuperLight, LightWeight and Heavy.

    A unique lubricant containing a suspension of solid microscopic particles as an extreme pressure agent - unique solid dispertion which cushions gear teeth to help prevent tooth breakage and allows the use of lower viscosities. Recommended for heavily-loaded racing differentals and transmissions, OFf Road racing and problem gearboxes. The viscosity characteristics allow the lubricant to resist throwoff and provide a film thickness similar to a 75W250 grade, while providing the same low fluid friction as an SAE 75W90.
    #14
  16. vetch
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    vetch S3

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    [Feb 15, 2010]
    I cant speak for anyone else, but as far as the OP is concerned, seems pretty normal to me. I had my gearbox oil changed and a new dogbone mount less than 1000 miles ago, and mine has a very slightly notchy/crunchy feel going into second for the first few changes when cold. Nearly every car Ive owned has been the same when starting from cold. As long as it goes away fairly quickly, I wouldn't worry about it.
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  17. ikbenben
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    ikbenben Belgium S3 driver

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    [Feb 15, 2010]
    I have to pull pretty hard to get it into 1st and 2nd gear when it's cold. After a few miles it's gone, shifts like new then.
    #16
  18. paulious
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    paulious Member

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    [Feb 15, 2010]
    For me, 1st is difficult to get in (even when warm) but 2nd is very easy, infact the easiest even though it makes a crunching noise as you described. This does go away however after it's warmed up and to be fair that isn't bad for a gearbox that has done 200k and on the original clutch!
    #17
  19. jonny87
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    jonny87 Active Member

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    [Feb 15, 2010]
    yer thats my thinking, change the oil, maybe check linkages etc

    if not solved il live with it for now untill i rip the engine apart at a later date
    #18
  20. MIKE GTR
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    MIKE GTR Member

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    [Feb 16, 2010]
    As i said, use this REDLINES unique ShockProof Gear Oil and it WILL go away - but at the end of the day there is something wrong for it to crunch
    #19
  21. Matt82
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    Matt82 Active Member

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    [Feb 16, 2010]
    well thats a bold statement. someone needs to do it just to see.

    your boxes are o2m and o2j right? i thoguht those were bullet proof

    the oil change is a must though. it does no feature on the service schedule at all
    #20
  22. jonny87
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    jonny87 Active Member

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    [Feb 16, 2010]
    at all? ten year old oil cannot be healthy lol

    question is gen audi oil or as mike suggested this shockload stuff, gotta be worth a shot i suppose, would you suggest the heavy or lightweight mike?

    o while we are on the subject, can anyone tell me how much the g/box holds?
    Last edited: Feb 16, 2010
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  23. Westy
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    Westy Double Dark Side! Diesel & 8P

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    [Feb 16, 2010]
    I noticed a slight 1st to 2nd crunch this morning but it went after the first time! my box has done 115K miles but I had new oil in it about 3k ago.

    Perhaps it's just normal?
    #22
  24. Matt82
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    Matt82 Active Member

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    [Feb 16, 2010]
    promise you, its not on there. they state they check the level but id bet money they dont

    i have an o2a box in my golf, previous generation to yours. i did an oil change at 144k, it was pitch black. did another at 200k miles, came out practically clear.

    id just stick with VW/audi stuff. the oil spec is a bit of a secret with vw, they dont state what it should be.

    if you buy audi/vw gearbox oil youll realise it is not 75w90. the genuine stuff is no where near as viscous
    #23
  25. MIKE GTR
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    MIKE GTR Member

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    [Feb 16, 2010]
    E-mail oilman on the opieoils site www.opieoils.co.uk they are so good. Tell him the problems, the car etc and he'll give you informed advice and not just direct you to their most expensive product.

    In my skyline i've used heavy, simply because its got a lot of power going through it with a triple plate clutch and I want to preserve the standard box for as long as poss
    #24
  26. jonny87
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    jonny87 Active Member

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    [Feb 16, 2010]
    cheers guys, will have a hunt around and get in touch with "the oil man" and make a decision and report back with results of oil change next weekend

    thanks again to you both
    #25
  27. 1animal1
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    1animal1 The Clar!! it mouves!!! VCDS Map User

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    [Feb 16, 2010]
    my gearbox oil is original :)
    #26

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