Welcome to ZRoadster.org - BMW Z1 Z4 Z8 Z3 Forum and Technical Database

If you want to join in with the discussion, and see the areas which are available only to members then sign up now!

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

BMW Z3 Racing 2014

Discussion in 'Z3 Roadster & Coupé' started by TMC Motorsport, Dec 27, 2013.

  1. TMC Motorsport

    TMC Motorsport Zorg Addict

    Joined:
    May 4, 2013
    Messages:
    58
    Likes Received:
    101
    Trophy Points:
    61
    Location:
    Wiltshire
    Model of Z:
    3
    I briefly introduced our race car last year but various commitments prevented me from keeping things up to date.
    This coming year I intend to make a stronger effort to keep regular updates coming, including developments on the car, problems overcome and hopefully some useful information for anyone that wants to extract some extra performance from their Z.

    Last year we had our fair share of ups and downs, but gradually improved things over the season. At the first race at Snetterton we established the championship benchmark was a Porsche Boxster. They lapped us in the first race in April, but by Donington in October we finished second behind them by only 9 seconds.

    Since that day we have upgraded the brakes, which on Donington GP circuit found us around 3-4 seconds a lap!

    Spec of the car now is as follows:

    Engine:
    2.8 twin vanos
    Standard internals
    Cold air feed
    K&N Filter
    Air conditioning pump removed
    De-cat and modified exhaust system post-cat

    Currently fitting the M54 inlet manifold with the adaptor plate for the throttle body, which will be followed by a remap.

    Suspension:
    HSD Single adjustable dampers
    700lb/in front springs
    250lb/in rear - converted to coil over
    3 way adjustable Front ARB
    All poly-bushed

    Brakes:
    Front:
    K-Sport 8 pot calipers & 330mm discs
    Ferodo endurance pads

    Rear:
    E36 Standard front calipers with bespoke mounting
    EBC E36 Vented front discs with adaptor plate to fit
    Ferodo endurance pads
    ABS removed
    Inline bias adjustment

    Chassis:
    Custom Cages 6 point weld in roll cage
    Full under-chassis brace
    Front strut brace

    Aero:
    Custom made front splitter & rear diffuser
    Single element rear wing

    Further developments still to come in weight loss and uprated ARBs from H&R, stiffer rear springs, making the aero more efficient and a few other bits and pieces.

    Attached a couple of pictures below, and I'm more than happy to answer any questions if there are any!

    Championship dates for 2014 have yet to be confirmed but we have the first test day planned for February 15th at Donington.

    Cheers all!

    1013393_10151697946987394_2127428185_n.jpeg image003-1.jpg P1010518-2.jpg
     
    #1 TMC Motorsport, Dec 27, 2013
    Last edited: Dec 29, 2013
    • Like Like x 6
  2. TMC Motorsport

    TMC Motorsport Zorg Addict

    Joined:
    May 4, 2013
    Messages:
    58
    Likes Received:
    101
    Trophy Points:
    61
    Location:
    Wiltshire
    Model of Z:
    3
    As much as I would love an M, the total cost so far would probably have only just bought the base car. Bizarrely, the 2.8 is also slightly easier to find championships to race in where we have a chance of running at the front without spending mega money.
    I have been making sure to keep constantly developing the comb and scissors as well though ;)
     
    • Like Like x 1
    • Funny Funny x 1
  3. Mr-P

    Mr-P Zorg Addict

    Joined:
    Feb 10, 2013
    Messages:
    400
    Likes Received:
    185
    Trophy Points:
    62
    Location:
    Oxfordshire
    Model of Z:
    Sold Z3M
    Hope the 2014 session goes well for you.
     
    • Like Like x 1
  4. GazHyde

    GazHyde The Gaz Monkey
    Staff Member Administrator Global Moderator British Zeds

    Joined:
    Dec 2, 2011
    Messages:
    15,232
    Likes Received:
    9,396
    Trophy Points:
    226
    Location:
    Newbury, Berkshire
    Model of Z:
    BMW Z4 3.0Si Sport
    All the best for the coming season. Will try and make at least one event this season time permitting!
     
    • Like Like x 1
  5. Stormy_be

    Stormy_be Zorg Guru (I)
    Belgian Zeds

    Joined:
    Oct 29, 2013
    Messages:
    745
    Likes Received:
    470
    Trophy Points:
    97
    Location:
    Belgium, ieper
    Model of Z:
    Z3 2.8 Roadster
    Not only will the brake upgrade give you 3-4 seconds on a lap, it will help gain a lot of places.
    Braking areas is THE place to overtake.
    Being able to brake a second later will make you get the move on others.

    Great job Matt.
     
    • Like Like x 1
  6. TMC Motorsport

    TMC Motorsport Zorg Addict

    Joined:
    May 4, 2013
    Messages:
    58
    Likes Received:
    101
    Trophy Points:
    61
    Location:
    Wiltshire
    Model of Z:
    3
    So we completed the manifold swap yesterday, just need to wait for our dyno chap to get back to work in the new year to find out how much difference it has made.
    Next plan is the ARB upgrade and stiffer rear springs.

    I know the H&R ARB is a popular upgrade, has anyone tried the 21mm rear vs the 19mm? We'll probably go for the stiffer of the 2 and slightly softer springs than originally planned, but wondered if anyone had any experience of both?

    Cheers,
    Matt
     
  7. Stormy_be

    Stormy_be Zorg Guru (I)
    Belgian Zeds

    Joined:
    Oct 29, 2013
    Messages:
    745
    Likes Received:
    470
    Trophy Points:
    97
    Location:
    Belgium, ieper
    Model of Z:
    Z3 2.8 Roadster
    Matt,

    Don't forget to post the outcome of your dyno-trip ;-)

    The H&R's have 2 settings, so you could set it to the harder setting.
    Don't know the possible settings on a 21mm ARB.

    What rate of spings do you have now? Why go softer?
    Isn't it on option to go a little softer on the damping?

    Regards
     
    • Disagree Disagree x 1
  8. TMC Motorsport

    TMC Motorsport Zorg Addict

    Joined:
    May 4, 2013
    Messages:
    58
    Likes Received:
    101
    Trophy Points:
    61
    Location:
    Wiltshire
    Model of Z:
    3
    Dont worry, the results will be detailed in full. Its the torque curve im looking forward to rather than headline bhp figure!

    The car has a habit of spinning up the inside rear off slow corners, so I want to get rid of the body roll and keep the tyre in better contact with the track.

    We've got 250lb/in coilovers at the moment. We're planning to go to 350s with the 19mm ARB, but it occurs to me that 325s with the 21mm ARB might be a better compromise. In all honesty I think we might end up going for the stiffest option on both.

    The danger with going too stiff is unsettling it in the high speed stuff, but I've got plans on the aero side to take care of that.
     
  9. bruce&kim

    bruce&kim Zorg Legend
    The West Country

    Joined:
    Jun 15, 2013
    Messages:
    436
    Likes Received:
    164
    Trophy Points:
    69
    Thanks for the updates TMC I look forward to reading many more and best of luck for the season
     
  10. Stormy_be

    Stormy_be Zorg Guru (I)
    Belgian Zeds

    Joined:
    Oct 29, 2013
    Messages:
    745
    Likes Received:
    470
    Trophy Points:
    97
    Location:
    Belgium, ieper
    Model of Z:
    Z3 2.8 Roadster
    Let us know when you know your calendar.
    Might even take a 1-day-retour-ticket with the tunnel if you're not to far from dover one day.
     
  11. motco

    motco Zorg Addict

    Joined:
    Dec 6, 2011
    Messages:
    152
    Likes Received:
    57
    Trophy Points:
    59
    Location:
    Chilterns
    Model of Z:
    Z3 2.2i Sport
    Sounds like fun! The fact that brakes are the most significant lap time improvers is no surprise really. One December when I was committed to a track day at Keevil airfield (my son with his nice and warm Z4M Coupé booked it) the weather was so damned cold that I chickened out of taking my Westfield even on its trailer, so I took my Z3 2.2 Sport instead. The handling isn't like a Se7en, obviously, but it's better and more predictable than I expected (as long as DSC is off), but the brakes wouldn't handle more than a couple of hot laps even at an ambient of c.5 degrees C. The pedal went 'long' to such an extent that I had to abandon any further runs before the lunch break for fear that I'd have no brakes for the homeward journey. The fluid was new, albeit standard stuff, and the pads - also standard - in good order, so it is simply that road orientated brakes are miles from adequate when pressed into serious action. As an aside, DSC is destructive of brakes on a track because it is constantly applying one here and one there to spoil your fun. The Z4M with DSC on had smoke from all four brakes after a couple of laps when my son took it on its first track day. DSC off and a set of decent pads and DOT5 fluid makes the Z4MC a great track day car.

    Please keep us informed of venues and dates; I'd love to go along and watch!
     
  12. TMC Motorsport

    TMC Motorsport Zorg Addict

    Joined:
    May 4, 2013
    Messages:
    58
    Likes Received:
    101
    Trophy Points:
    61
    Location:
    Wiltshire
    Model of Z:
    3
    Thanks for the support everyone.
    The car is making a bit more progress, with the inlet manifold done, suspension overhauled, ARBs on order and a new rear wing mount in the making.
    We now have a provisional calendar as well, which can be found at http://www.team-trophy.co.uk/2014-calendar.aspx
    If anyone would like to come along to any of them it would be great to see you!
     
  13. swamper

    swamper Zorg Guru (V)
    Supporter M Power

    Joined:
    Dec 4, 2011
    Messages:
    2,597
    Likes Received:
    815
    Trophy Points:
    181
    Location:
    Mossley
    Model of Z:
    z3m
    Oulton Park - Sat 14 June 2014......i'll do my best to make
     
    • Like Like x 1
  14. Stormy_be

    Stormy_be Zorg Guru (I)
    Belgian Zeds

    Joined:
    Oct 29, 2013
    Messages:
    745
    Likes Received:
    470
    Trophy Points:
    97
    Location:
    Belgium, ieper
    Model of Z:
    Z3 2.8 Roadster
    Do you also still compete in the roadsports division of the MC750-club?
     
  15. Daz3

    Daz3 Zorg Legend

    Joined:
    Dec 8, 2011
    Messages:
    618
    Likes Received:
    167
    Trophy Points:
    75
    Location:
    Spilsby, Lincolnshire
    Model of Z:
    2.8 Roadster
    Oooh cadwell might have to go to that one for a gander be rude not too being as though it's a couple of miles away!
     
    • Like Like x 1
  16. TMC Motorsport

    TMC Motorsport Zorg Addict

    Joined:
    May 4, 2013
    Messages:
    58
    Likes Received:
    101
    Trophy Points:
    61
    Location:
    Wiltshire
    Model of Z:
    3
    The plan is to fit in as many Roadsports races around the Team Trophy as we can. None of the dates clash, but Team Trophy is the priority so we might not make it to all of the 750MC events.
     
  17. Stormy_be

    Stormy_be Zorg Guru (I)
    Belgian Zeds

    Joined:
    Oct 29, 2013
    Messages:
    745
    Likes Received:
    470
    Trophy Points:
    97
    Location:
    Belgium, ieper
    Model of Z:
    Z3 2.8 Roadster
    Any at brands hatch?
    (as that is closest for a day or weekend crossing from the mainland)
     
  18. TMC Motorsport

    TMC Motorsport Zorg Addict

    Joined:
    May 4, 2013
    Messages:
    58
    Likes Received:
    101
    Trophy Points:
    61
    Location:
    Wiltshire
    Model of Z:
    3
    2 so far. We're on the GP Circuit on August 16th, and the Indy Circuit on November 23rd.
     
  19. J_K

    J_K Newbie

    Joined:
    Dec 13, 2012
    Messages:
    3
    Likes Received:
    1
    Trophy Points:
    4
    What championships are you racing in?
    I'm just building a Z3m at the moment but it's primary use is for the British Drift Championship but would quite like to race it.
     
    • Like Like x 1
  20. Mr-P

    Mr-P Zorg Addict

    Joined:
    Feb 10, 2013
    Messages:
    400
    Likes Received:
    185
    Trophy Points:
    62
    Location:
    Oxfordshire
    Model of Z:
    Sold Z3M
    JK if you need spare M wheels I have 2 rear and 1 front for sale.(I will PM you)
     
    #20 Mr-P, Jan 19, 2014
    Last edited: Jan 19, 2014