Sky InsuranceChris Nott
Results 1 to 24 of 24
  1. #1
    Alex C's Avatar
    6th Gear

    Status
    Offline
    Join Date
    Jan 2010
    Location
    Lizard, Cornwall
    Posts
    2,602

    Crunchy up into third gear

    TBH I don't really want to ask the question because I am worried about the answer having had the gearbox pulled out just over a year ago for a broken shift fork.

    Anyway, I have noticed (today) that pretty much on each and every gear change up from 2nd into 3rd gear that the gears crunch. It doesn't do this on any of the other up-shifts and it doesn't do it on any of the down-shifts not even from 4th to 3rd either.

    If I up-shift from 2nd to 3rd abnormally slowly then there is no crunch, but on a normal shift it crunches.

    I have two potential causes in my head: syncro-mesh or dogbone bush?
    Alex S3 AMK
    Bilstein B8s, H&R Springs, Neuspeed ARBs, Genuine 18" BBS LMs & LCR Brembos

  2. # ADS
    ADS
    Join Date
    Always
    Location
    Global
    Posts
    Many
     
  3. #2
    superkarl's Avatar
    MAN OF STEEL

    Status
    Offline
    Join Date
    Mar 2010
    Location
    Liverpool/Southport. N west
    Posts
    7,533
    I have the EXACT same thing.
    My dad (mechanic) says its 100% synchro.

    If I'm giving it the beans, shifting above 5k, I have to shift really slowly into third.

  4. #3
    Alex C's Avatar
    6th Gear

    Status
    Offline
    Join Date
    Jan 2010
    Location
    Lizard, Cornwall
    Posts
    2,602
    Quote Originally Posted by superkarl View Post
    I have the EXACT same thing.
    My dad (mechanic) says its 100% synchro.

    If I'm giving it the beans, shifting above 5k, I have to shift really slowly into third.
    **** i am officially depressed
    Last edited by Alex C; 9th April 2012 at 00:09.
    Alex S3 AMK
    Bilstein B8s, H&R Springs, Neuspeed ARBs, Genuine 18" BBS LMs & LCR Brembos

  5. #4
    4th Gear

    Status
    Offline
    Join Date
    Oct 2011
    Posts
    760
    i had this problem, uprated dog bone fixed mine.
    cheap fix

  6. #5
    Alex C's Avatar
    6th Gear

    Status
    Offline
    Join Date
    Jan 2010
    Location
    Lizard, Cornwall
    Posts
    2,602
    thanks, guess it makes sense to change that first. I fear the worst though
    Alex S3 AMK
    Bilstein B8s, H&R Springs, Neuspeed ARBs, Genuine 18" BBS LMs & LCR Brembos

  7. #6
    jojo's Avatar
    S3 Drift King!

    Status
    Offline
    Join Date
    Sep 2003
    Location
    Solihull, Midlands
    Posts
    25,524
    I had this in the earlier days, it only happens when shifting 2nd into 3rd at high rpm. Dogbone mount cured mine, I've not done it since, even out on the track!



    99' Audi S3(APY) - Brilliant Black Click>>>Going Sideways vid!
    You've got to have a laugh! For Sale:LCR Brakes - £400



  8. #7
    Alex C's Avatar
    6th Gear

    Status
    Offline
    Join Date
    Jan 2010
    Location
    Lizard, Cornwall
    Posts
    2,602
    ooooo! the futures looking bright! OK, I'll get a new dogbone bush asap and see if it fixes the problem.Thanks for giving me hope guys

    which dogbone bush is the one every one opts for?

    this one? Red One
    Last edited by Alex C; 9th April 2012 at 16:16.
    Alex S3 AMK
    Bilstein B8s, H&R Springs, Neuspeed ARBs, Genuine 18" BBS LMs & LCR Brembos

  9. #8
    1st Gear

    Status
    Offline
    Join Date
    Jun 2011
    Posts
    249
    Quote Originally Posted by Alex C View Post
    this one? Red One
    diesel?
    A3 S Line 2.0 TDI Sportback - DSG
    BOSE, cruise control, bi-xenons, MFSW, Heated seats, paddle shifts, ipod connection

    19" Speedlines | Reverse camera | Eibach Sportline Springs | MY09 LED Tails | Eibach Spacers Front 10MM Rear 12MM | Pioneer HU | Private Plate | Tints | LED numberplate | Interior Light Kit

  10. #9
    Alex C's Avatar
    6th Gear

    Status
    Offline
    Join Date
    Jan 2010
    Location
    Lizard, Cornwall
    Posts
    2,602
    yeah, apparently from what i have read elsewhere. The yellow one (petrol) is too harsh

    awaiting confirmation though bud

    dog bone bush best one ?

    got it
    Alex S3 AMK
    Bilstein B8s, H&R Springs, Neuspeed ARBs, Genuine 18" BBS LMs & LCR Brembos

  11. #10
    StaceyS3's Avatar
    6th Gear

    Status
    Offline
    Join Date
    Dec 2010
    Location
    Maldon, Essex
    Posts
    2,099
    Mine has started to do thus from 2nd to 3rd but is only at higher revs when driving it hard, but I already have uprated both the dogbone mounts underneath but I think my engine mounts are pretty shot and have got some on order so only time will tell
    Power & Torque 335bhp 285ftlb
    0-60 4.64 1/4 mile 13.02
    My GTX3071r Build Thread
    http://www.audi-sport.net/vb/a3-s3-f...ld-thread.html

  12. #11
    superkarl's Avatar
    MAN OF STEEL

    Status
    Offline
    Join Date
    Mar 2010
    Location
    Liverpool/Southport. N west
    Posts
    7,533
    hmmmmm, i know my dad said its synchro, but perhaps i could do with tightening my poly dog bone mount. maybe my engine mounts are shot too, i wouldnt be surprised.

    my gearbox is absolutely fine unless im giving it beans.

    hard to imagine a bush/mount having such an effect on gear changes

  13. #12
    2nd Gear

    Status
    Offline
    Join Date
    Dec 2011
    Location
    Hockley Essex
    Posts
    309
    i fitted the yellow dog bone bush a little while ago now and it sorted out my gear crunch and i haven't found it to harsh at all . Well worth doing ! Completely transformed my car !

  14. #13
    mattyboy199's Avatar
    6th Gear

    Status
    Offline
    Join Date
    Nov 2005
    Location
    UK
    Posts
    1,688
    i had a similar issue but it only occurred when the engine was at full tempreture, anyway i knew i was due a new clutch. Got a new clutch and flywheel fitted the issue disappeared.
    2002 Dolphin grey S3 - Sym2+bose, heated leather, ally mirrors, R32 ARB's with superpro, Jabba stage 2 map, TFSI coils, Samco TIP, Forge DV & privacy glass

    2010 Green Kawasaki Ninja ZX6R - Akrapovic baffleless race can, LED cluster & HID's

    wanted for 8L S3:
    Unmarked grey rear bumper panel
    Milltek system

  15. #14
    danger S3's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Jun 2010
    Location
    Edinburgh, Scotland
    Posts
    355
    Hi, sorry to dig up and oldish thread but i have this problem too.
    Although it only crunches once the gearbox has warmed up so after about 30 - 45 minutes of driving.

    I've changed the gear oil, replaced the clutch/brake fluid, bled the clutch and adjusted the gear linkages.

    I was wondering if its because the viscosity of the oil when its hot is too thin. would changing the oil to something other than the oem gear oil make a difference?

    Cheers

    Ali

  16. #15
    jojo's Avatar
    S3 Drift King!

    Status
    Offline
    Join Date
    Sep 2003
    Location
    Solihull, Midlands
    Posts
    25,524
    Quote Originally Posted by danger S3 View Post
    Hi, sorry to dig up and oldish thread but i have this problem too.
    Although it only crunches once the gearbox has warmed up so after about 30 - 45 minutes of driving.

    I've changed the gear oil, replaced the clutch/brake fluid, bled the clutch and adjusted the gear linkages.

    I was wondering if its because the viscosity of the oil when its hot is too thin. would changing the oil to something other than the oem gear oil make a difference?

    Cheers

    Ali
    Dogbone mount mate, I don't even remember the last time I crunched my gearbox since having this £20 part fitted!



    99' Audi S3(APY) - Brilliant Black Click>>>Going Sideways vid!
    You've got to have a laugh! For Sale:LCR Brakes - £400



  17. #16
    danger S3's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Jun 2010
    Location
    Edinburgh, Scotland
    Posts
    355
    sorry i forgot to add that to the list, ive added the red dogbone powerflex one and its still doing it, although it was about a year ago i added it, could it need tightened?

  18. #17
    jojo's Avatar
    S3 Drift King!

    Status
    Offline
    Join Date
    Sep 2003
    Location
    Solihull, Midlands
    Posts
    25,524
    Quote Originally Posted by danger S3 View Post
    sorry i forgot to add that to the list, ive added the red dogbone powerflex one and its still doing it, although it was about a year ago i added it, could it need tightened?
    Can't answer your question, but the dogbone mount only needs to be done up as tight as you can by hand with a ratchet, then there's a specific torque setting for it bolting onto the car's baulkhead.



    99' Audi S3(APY) - Brilliant Black Click>>>Going Sideways vid!
    You've got to have a laugh! For Sale:LCR Brakes - £400



  19. #18
    Alex C's Avatar
    6th Gear

    Status
    Offline
    Join Date
    Jan 2010
    Location
    Lizard, Cornwall
    Posts
    2,602
    i fitted a dog bone mount too in the hope it would be an easy fix -- failed for me too.

    Suspect its worn synchro rings.

    I have put molyslip in the box and now double declutch and heel toe to nurse the gearbox around, its still notchy like this but doesn't crunch
    Alex S3 AMK
    Bilstein B8s, H&R Springs, Neuspeed ARBs, Genuine 18" BBS LMs & LCR Brembos

  20. #19
    Gops's Avatar
    6th gear @7000rpm

    Status
    Offline
    Join Date
    Nov 2009
    Location
    Coventry
    Posts
    2,635
    Quote Originally Posted by Alex C View Post
    i fitted a dog bone mount too in the hope it would be an easy fix -- failed for me too.

    Suspect its worn synchro rings.

    I have put molyslip in the box and now double declutch and heel toe to nurse the gearbox around, its still notchy like this but doesn't crunch
    I had the exact problem. Sometimes its still there even with a dogbone mount but I think my engine mounts are crap. Also my xfer box is leaking at the prop so Im short on oil too! Im getting that done so time will tell. When I got the oil changed in the gearbox before, it made it feel soo smoooooth!
    Quote Originally Posted by <tuffty/> View Post
    its either mapped or broken...

  21. #20
    StaceyS3's Avatar
    6th Gear

    Status
    Offline
    Join Date
    Dec 2010
    Location
    Maldon, Essex
    Posts
    2,099

    Crunchy up into third gear

    Quote Originally Posted by StaceyS3 View Post
    Mine has started to do thus from 2nd to 3rd but is only at higher revs when driving it hard, but I already have uprated both the dogbone mounts underneath but I think my engine mounts are pretty shot and have got some on order so only time will tell
    As an update to my previous post I ended up killing my box.... Pretty sure was the selector fork gone as only could select 3rd and 4th and was permanently in gear, even in the neutral position
    Power & Torque 335bhp 285ftlb
    0-60 4.64 1/4 mile 13.02
    My GTX3071r Build Thread
    http://www.audi-sport.net/vb/a3-s3-f...ld-thread.html

  22. #21
    1st Gear

    Status
    Offline
    Join Date
    Jun 2012
    Location
    Essex
    Posts
    213
    I've got this issue, from 2nd to 3rd I get a crunch every now and again. And 1st, every now and again will just pop out of gear.
    Changed oil, fitted poly dog bone mount and still have the issue.
    Pretty sure it's synchro, so just nursing the gearbox until I can afford a new box and diff, ready for ko4 conversion late next year

  23. #22
    danger S3's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Jun 2010
    Location
    Edinburgh, Scotland
    Posts
    355
    anyone reckon changing from the oem gear oil to something like Red Line MT-90 75W90 GL-4 Gear Oil would help with notchy gears and crunching from 2nd to 3rd when warm? or am i just clutching at straws

  24. #23
    colicabcadam
    Guest
    red line made a huge difference to my box, ok it was not as smooth when cold (0 degree cold) , but after about a mile it was SO much easier to change gear !!!

  25. #24
    Sam_'s Avatar
    Down under

    Status
    Offline
    Join Date
    Mar 2011
    Location
    Sydney, Australia
    Posts
    2,783
    Going to chuck some redline in mine this weekend, along with a sump, pickup and oil change...
    Handling mods++. HTA3582 stroker soon-ish. Hiding parts from the mrs since 2011. Build thread

 

 

Similar Threads

  1. S3 2nd Gear / 3rd Gear "Notchy" problems
    By NME in forum A3/S3/Sportback (8P Chassis)
    Replies: 2
    Last Post: 23rd May 2011, 11:31
  2. 2nd gear 'crunchy' from cold
    By leshkin in forum A3/S3 Forum (8L Chassis)
    Replies: 25
    Last Post: 16th February 2010, 23:01
  3. Top Gear gear
    By voorhees in forum Jokes, Games & Humour
    Replies: 9
    Last Post: 27th June 2009, 11:43
  4. No fifth gear
    By Redhot006 in forum A3/S3 Forum (8L Chassis)
    Replies: 7
    Last Post: 20th March 2008, 19:09
  5. notchy / crunchy gear change
    By technics100 in forum A4/A4 cabriolet/S4 forum(B6 chassis)
    Replies: 3
    Last Post: 22nd March 2007, 15:12

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Single Sign On provided by vBSSO

Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

Content Relevant URLs by vBSEO