1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.
  2. Dismiss Notice

Has anyone fitted (F&R) upgraded diffs to the S3?

Andrew@A.L.D Mar 31, 2015

  1. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp S3.

    3,883
    618
    113
    I thought you were running the SQS gear and knew you didn't have any issues with them. Did you run the SQS shifter at one point..
     
  2. Avatar

    snack-media
    Advertisement


  3. badger5

    badger5 www.badger5.co.uk Site Sponsor

    10,216
    2,380
    113
    yea, had SQS seqshift years ago.. but never ran it with the SQS dog kit.. Wish I could use it now (sold it years ago which I regret) as with the SQS gears it would be epic. I ran it with std box and then quaife dog kit, but the quaife kit was utter shyte from the beginning to end. Replaced with the SQS which was and has been good for me.

    Circuit racing abuse, 02J box, so not like yours, but I've been very happy with mine
     
  4. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp S3.

    3,883
    618
    113
  5. Gary_808

    Gary_808 Registered User

    166
    11
    18
    What rear diff you gone for?
     
  6. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp S3.

    3,883
    618
    113
  7. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp S3.

    3,883
    618
    113
    [​IMG]

    Diesel gear, also got a few other things to go into the box..

    Should get my input shaft back as it's been strengthened.
     
    snowy, s3 Hoggy and S3Alex like this.
  8. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp S3.

    3,883
    618
    113
  9. Gary_808

    Gary_808 Registered User

    166
    11
    18
    Never seen one of them before!
    Would be interesting to see,

    Their 3-4-5-6 are seem quite cheap as well.
     
  10. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp S3.

    3,883
    618
    113
    Read the review

    They seam to do ok, not as good as a proper LSD but not as bad as a welded diff
     
  11. badger5

    badger5 www.badger5.co.uk Site Sponsor

    10,216
    2,380
    113
    whens your motor going to get on the road again Andrew?
    Its been a long time coming...

    this year?
     
  12. Avatar

    snack-media
    Advertisement


  13. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp S3.

    3,883
    618
    113
    Up coming house buy Bill?
    I hope to be this year but you never know. I never have time to work on the car
     
  14. badger5

    badger5 www.badger5.co.uk Site Sponsor

    10,216
    2,380
    113
    eww house purchase.
    saps the ££ out of you.

    good luck.
    you'll get there in the end

    (hopefully before fossil fuels run out )
     
    A3-Lee and Jenno007 like this.
  15. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp S3.

    3,883
    618
    113
  16. Jenno007

    Jenno007 Registered User

    1,150
    140
    63
    While we're on the topic of follis fuels, how readily available is e85 over there Bill? A lot of people run it here in Australia and get huge gains with just a tune and maybe fuel system upgrade depending on the spec of the car.

    edit: haha beat me to it Andrew.

    Are you going to use e85 and WMI or just e85?
     
  17. Gary_808

    Gary_808 Registered User

    166
    11
    18
    E85 is near on impossible to get at the pump here now,
    My local supermarket used to have a pump but they removed it about 5 years ago now.

    You can buy barrels of the stuff from race fuel suppliers, the bonus is the blend is always the same, (but expensive)

    because of the temp change in seasons the pump e85 could vary as much to just 60 percent ethanol, which could cause issues if you don't have a sensor in the tank and a ecu capable of changing ignition timing and fueling to suit the blend.

    Or you could do like a friend of mine does and blend your own lol!
     
  18. Jenno007

    Jenno007 Registered User

    1,150
    140
    63
    blending your own seems a bit extreme!

    I plan on running a flex sensor in my car so I can run a mix of 98 and e85 for the best of both worlds.
     
  19. Gary_808

    Gary_808 Registered User

    166
    11
    18
    He's a Dr of chemical engineering, it costs him about a third of what it would to buy it, and his car is strictly drag strip only.
    I may give his special brew ago when I'm on the road, but it'll mean new injectors.
     
    Jenno007 likes this.
  20. snowy

    snowy Registered User

    443
    110
    43
  21. Prawn

    Prawn My other car is a MINI!!!!

    12,099
    4,332
    113
    Looking good Andrew!

    What's the idea of the TDI gearset? Improved economy on cruise? Exceeding 200mph?
     
  22. george_seamons

    george_seamons I'm on the naughty step

    363
    96
    28
    Glad to see somebody else's gearset has notches out of each gear. I thought something was up with mine, but figured they were too uniform to be debris-induced!

    Anybody know what purpose they serve? Is it lubrication based? Does the groove on each tooth give the oil something to "grab onto"?
     
  23. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp S3.

    3,883
    618
    113
    Thank you

    You got it bang on.

    This is still a road car with all in creature comforts, I could of fitted straight cut gears but the cost is high and to loud also.
     
  24. Prawn

    Prawn My other car is a MINI!!!!

    12,099
    4,332
    113
    I know you love your top speed runs :laugh:

    Looking forward to seeing what can be achieved on this new setup :)
     
  25. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp S3.

    3,883
    618
    113
    It could only manage 183mph last time. Bouncing off the limiter.
     
  26. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow... Staff Member Moderator

    24,381
    5,615
    113
    What was the limiter set at?...

    Guessing this would be lower than a normal stroker or 1.8

    <tuffty/>
     
  27. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp S3.

    3,883
    618
    113
  28. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow... Staff Member Moderator

    24,381
    5,615
    113
    Wow... Higher than I that that crank/rod angle would do tbh...

    <tuffty/>
     
  29. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp S3.

    3,883
    618
    113
  30. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp S3.

    3,883
    618
    113
  31. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow... Staff Member Moderator

    24,381
    5,615
    113
    I know mine revs to 10.5k... but I am trying to forget how I found that out :(

    lol...

    <tuffty/>
     
    A3-Lee, Goubo1, kanecullen89 and 4 others like this.
  32. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp S3.

    3,883
    618
    113
    Well I hope I've covered everything that can break, move, stretch etc at high revs. I just want to over engineer everything so it doesn't break.
     
  33. Avatar

    snack-media
    Advertisement


  34. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp S3.

    3,883
    618
    113
    Scratch the idea of using ERF ratios as I was talking to someone that did it and he did 174mph in 4th ... very long and sluggish

    Looking into better ratios now
     
  35. Gary_808

    Gary_808 Registered User

    166
    11
    18
    There's some free gearbox ratio speed calc apps I use, super easy.
    Have you got the erf ratios? As I may be interested if your selling?
     
  36. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp S3.

    3,883
    618
    113
  37. snowy

    snowy Registered User

    443
    110
    43
    Guess he had a very slow boosting engine

    I've gone through 'standard' petrol ratios (02J), then S3 close ratios (VR6 ratios) and then onto 'long' ratios

    The longer ratios are just so much more pleasant to drive, and faster through corners - you can hold a gear longer - push the diffs harder

    You ideally don't want to be cornering, fully committed to the traction of the diffs, then cut their torque supply as you change gear

    With the close gears I found myself having to change gears so much it ruined the performance of the car

    Short ratios, imhe, are fine for cars fast have to corner slowly, then blast back up to speed - you're not going to have to that - not with 3x LSD in the car - you're going to be finding youself accelerating into corners ;)

    Personally, I found myself wanting an even longer final drive to bring motorway cruising rpm down further
     
    Last edited: Apr 25, 2015
  38. Prawn

    Prawn My other car is a MINI!!!!

    12,099
    4,332
    113

    Without wishing to troll in the slightest here, should we contact every race team, ever, and inform them all that they're doing it wrong?

    Tall ratios are for diesels, the motorway, and old people.

    If speed is the intention, you should pick the shortest ratios possible that will allow you to reach your desired maximum speed.
     
  39. snowy

    snowy Registered User

    443
    110
    43
    short ratio with semi-auto and sequential shift are a bit different to manual shift short ratio

    not to mention taking into account the 02M's relatively clunky selector mechanism

    Short ratio, in my experience, does not fit that brief

    I took this as meaning Andrew wishes to screw through corners hard

    Since going short ratio to long ratio I can corner harder and faster quite simply because I can hold a gear longer

    that's a little ott tbh, I'm quite happy with just two ;)
     
  40. Gary_808

    Gary_808 Registered User

    166
    11
    18
    If you need to change gear mid corner I'd say your in the wrong gear and either entering too fast or too slow...
     
  41. Prawn

    Prawn My other car is a MINI!!!!

    12,099
    4,332
    113
    I see why Andrew wants a taller ratio, he hit the limiter in top and wants more. Top speed is obviously important to him with his insane power build.

    That said, he's realised that the erf ratios will kill performance too much and is looking for a better solution.

    For comfort, top speed, and economy I can totally understand the taller ratios.

    For outright performance below 160mph it makes no sense.
     
  42. snowy

    snowy Registered User

    443
    110
    43
    I would love to strap into a passenger seat and demonstrate the error of your assumption

    However I too have an archaeologically-long engine change under way ..

    I suspect at the moment all we're going to agree on, this that by your definination I probably am an old person [​IMG]
     
  43. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp S3.

    3,883
    618
    113
    A little of topic but what power is yours making?
     

Share This Page

Do Not Sell My Personal Information