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.

Z3 to Kobra build thread

Discussion in 'Progress Threads' started by DaveP, Mar 24, 2018.

  1. DaveP

    DaveP Zorg Legend
    British Zeds

    Joined:
    Mar 26, 2016
    Messages:
    465
    Likes Received:
    298
    Trophy Points:
    83
    Location:
    Reading
    Model of Z:
    Z3 2.2
    So time has come for me to change a slightly scruffy black 2001 2.2 non sport into a Kobra.

    This is a rebody kit made by Tribute Automotive. I bought the Zed as a donor car as the mechanicals and mot history looked strong. The body work was fine but in need of quite a bit of touching up etc. As I am taking the bodywork off that didn’t worry me.

    This being a Zed forum I thought this thread may be of interest to those of you that have a pristine model already but wanted a second car in need of a change...

    I’ll be posting progress slowly but surely.

    Dave

    Oh forgot to say. I post my progress on another forum (yes there others ) but here is a different audience.
    And if my post is too pic heavy please smack me Mods
     
    #1 DaveP, Mar 24, 2018
    Last edited: Mar 24, 2018
    • Like Like x 11
  2. PHILIP BAXTER

    PHILIP BAXTER Zorg Guru (IV)
    British Zeds

    Joined:
    May 3, 2015
    Messages:
    2,516
    Likes Received:
    1,290
    Trophy Points:
    159
    Location:
    Cardiff
    Model of Z:
    Z3 3.0i Roadster
    Nice one Dave. Looking forward to this. Good luck with the build. :thumbsup:
     
    • Like Like x 1
  3. DaveP

    DaveP Zorg Legend
    British Zeds

    Joined:
    Mar 26, 2016
    Messages:
    465
    Likes Received:
    298
    Trophy Points:
    83
    Location:
    Reading
    Model of Z:
    Z3 2.2
    Preparation first.

    As I would be keeping this many years after the build I thought it best to get under and take a look. The underside was looking just right and the suspension components at the rear solid. The front bushes left a bit to be desired and brakes needed a refresh. I also need to have the ability to make the car height adjustable due to the the body change. So went and ordered some goodies !

    Brembo brake disc and pads all round and BC racing coil-overs. Meyle front control arms and lollipops too.
     

    Attached Files:

    • Like Like x 5
  4. DaveP

    DaveP Zorg Legend
    British Zeds

    Joined:
    Mar 26, 2016
    Messages:
    465
    Likes Received:
    298
    Trophy Points:
    83
    Location:
    Reading
    Model of Z:
    Z3 2.2
    Sus fitted.

    Bad pics of the suspension fitted and car dropped (too flipping low at the moment) a bit.
    Last pic shows how the bushes were on the original lollipops.

    Looking back at the pics I could have gone further and cleaned up the knuckle and back plate ... but it’s all going to get dirty anyway after time. It will never ever be concourse so ...
     

    Attached Files:

    • Like Like x 5
  5. DaveP

    DaveP Zorg Legend
    British Zeds

    Joined:
    Mar 26, 2016
    Messages:
    465
    Likes Received:
    298
    Trophy Points:
    83
    Location:
    Reading
    Model of Z:
    Z3 2.2
    Car dropped.

    Apologies for the background (a working environment!)
     

    Attached Files:

    • Like Like x 4
  6. DaveP

    DaveP Zorg Legend
    British Zeds

    Joined:
    Mar 26, 2016
    Messages:
    465
    Likes Received:
    298
    Trophy Points:
    83
    Location:
    Reading
    Model of Z:
    Z3 2.2
    Now to the stripper pics.

    It should take less than a day to strip it all down. Took me longer (nearly two days) due to
    Lack of knowledge
    Constant need to help someone with other stuff
    Attending conference calls with the US (work getting in the way of play)
    Lack of skill.

    It’s all off bar the outer cills (I bl00dy forgot to get them off before the pics taken).

    I’m now at the stage where I begin preparing the body to fit (needs a bit of offering up and fettling as I go). Next week I hope to have rear clam-shell and boot fitted. Perhaps bonnet if all goes to plan. C209F923-17D8-49FC-AF14-FB7DCA8D7858.jpeg 2ADF94D7-CE65-497B-9F50-341EE99A1FF1.jpeg 0AA3628C-D250-47E3-AE7C-F0A00CD7D848.jpeg 362F0659-F4E1-4383-949E-DCB9B8AD10BA.jpeg ACBA45FC-4863-4C69-9539-E669710117EB.jpeg 7B817DA1-E12D-48F6-9ACC-75275B6FB2CD.jpeg
     
    • Like Like x 12
  7. DaveP

    DaveP Zorg Legend
    British Zeds

    Joined:
    Mar 26, 2016
    Messages:
    465
    Likes Received:
    298
    Trophy Points:
    83
    Location:
    Reading
    Model of Z:
    Z3 2.2
    Questions.

    No rear wheel carrier ? Nope I am going for twin exhaust eventually so will carry puncture repair and air pump.
    Keeping wheels ? Nope have banded steels in waiting pics to follow soon.
    Interior ? We will see - keeping bmw dash as not brave enough to change right now. Keeping Zed steering wheel also for vigilant MOT testers. Seats and centre console will change. OEM hoops coming out too.

    Thanks all

    Dave
     
    • Like Like x 3
  8. Paul Rice

    Paul Rice Zorg Guru (IV)
    Supporter British Zeds The M44 Massive

    Joined:
    Sep 7, 2013
    Messages:
    3,428
    Likes Received:
    2,475
    Trophy Points:
    162
    Location:
    Doncaster
    Model of Z:
    Z3 1.9 / Z4 2.5
    Looking forward to all your progress Dave
     
    • Like Like x 1
  9. DaveP

    DaveP Zorg Legend
    British Zeds

    Joined:
    Mar 26, 2016
    Messages:
    465
    Likes Received:
    298
    Trophy Points:
    83
    Location:
    Reading
    Model of Z:
    Z3 2.2
    Thanks Paul (and to the other likes so far of course)

    :)
     
    • Like Like x 2
  10. Slam

    Slam Zorg Guru (III)
    Supporter British Zeds

    Joined:
    May 24, 2017
    Messages:
    2,398
    Likes Received:
    631
    Trophy Points:
    128
    Location:
    SE London/Kent borders
    Model of Z:
    Z3 2.8
    This is going to be interesting, keep up the good work
     
    • Like Like x 2
  11. Althulas

    Althulas Zorg Guru (III)
    British Zeds

    Joined:
    Jun 14, 2014
    Messages:
    2,202
    Likes Received:
    837
    Trophy Points:
    137
    Location:
    Milton, Banbury
    Model of Z:
    M Roadster
    Look forward to your progress.
     
    • Like Like x 1
  12. Madtoady

    Madtoady Zorg Addict
    British Zeds

    Joined:
    Aug 14, 2017
    Messages:
    193
    Likes Received:
    150
    Trophy Points:
    55
    Location:
    Rochester, Kent
    Model of Z:
    3.0i Roadster
    Following!
     
  13. DaveP

    DaveP Zorg Legend
    British Zeds

    Joined:
    Mar 26, 2016
    Messages:
    465
    Likes Received:
    298
    Trophy Points:
    83
    Location:
    Reading
    Model of Z:
    Z3 2.2
    So week before Easter I took days off work (I'm a contractor so it hurt) to get a bit more done. Bear with me while I get my posts in order :)

    First off I needed to do some grp work as the Kobra kit is provided with a indentation/aperture in which you put the cobra side grill/gills. As mine is not a Cobra but a 'custom' I decided to cut the back off the indentation and then refit it level with the sides of the winglet. Now that may kick my butt one day if the grp filler shows through the paint. It's too late now !

    You will see the pics of the inside of the wing before cutting, then I duck-taped the piece in place from the front then glassed in the back. Then filled the front with grp filler. I am missing a pic of the inside glassing in. I will take one when I next take the wing off and place here later.

    Side wing before 1.jpg Side wing before 3.jpg Side wing during 1.jpg


    Here is a side view of the Zed with the new wing on so you can see the result that looks better from a distance.

    side view with wing 1.jpg

    You can see a tiny hole in the winglet behind the wheel-arch. This is where the side indicator is going to go.

    Also from the side you can see the power-steering cooling pipe. That has been removed and a mandrill in stainless used as a return loop. This is needed as I needed to cut the ears off in order to get the bonnet lower lip over the front. The ears are only relieved a little and nothing structural ever touched.

    I'll talk about the rear next.
     
    #13 DaveP, Mar 30, 2018
    Last edited: Mar 30, 2018
    • Like Like x 3
  14. DaveP

    DaveP Zorg Legend
    British Zeds

    Joined:
    Mar 26, 2016
    Messages:
    465
    Likes Received:
    298
    Trophy Points:
    83
    Location:
    Reading
    Model of Z:
    Z3 2.2
    Next I moved onto starting preparing the rear clam. This fits all the way around the wings and across the back of the car. I am fitting landie lights as I prefer them to the period lucas chrome ones. My fave cobra lights are the rectangular ones but they do not meet UK regs. (unless you spend over £300 on some LED conversions).

    Here is a quick shot of the back with lights trial fitted. Rear fog-lights and reflectors will go on when I fit the body proper.

    rear with lights 1.jpg
     
    • Like Like x 6
    • Agree Agree x 1
  15. DaveP

    DaveP Zorg Legend
    British Zeds

    Joined:
    Mar 26, 2016
    Messages:
    465
    Likes Received:
    298
    Trophy Points:
    83
    Location:
    Reading
    Model of Z:
    Z3 2.2
    As it pee-ed down all day I went under-cover and concentrated on the boot furniture for a morning. Fitted TR4 boot hinges to pre-marked holes (hope they are correct). Then a number-plate lamp onto a preformed area (it needed a bit of relief at the back as the fixing bolts were a bit on the short-side.

    Lastly I needed to fit the old mini type rear boot handle and inside bear claw. They both have bolts that need inner nuts and they are all hidden in a moulded space between the boot skins. I made a neat-ish access hole to gain entry for my spanner and will cover this when all is done.

    boot hinges.jpg boot lid 2.jpg boot lock detail 1.jpg boot lock detail 3.jpg

    Onto the next bit...
     
    • Like Like x 6
  16. DaveP

    DaveP Zorg Legend
    British Zeds

    Joined:
    Mar 26, 2016
    Messages:
    465
    Likes Received:
    298
    Trophy Points:
    83
    Location:
    Reading
    Model of Z:
    Z3 2.2
    I spent a good deal of time laying on cold damp gravel including lifting the Zed up on the coil-overs. They might come back down though.

    I cut and drilled holes for the front headlamps and indicators in the bonnet. Replaced the bonnet gas struts with some a bit more oooomphie and re-fitted the side wings. Now these fit on all the exiting bolt holes for the OEM sills AND winglets so are a pig to get right. I have lots of gapping to do around the Zed doors.

    By the end of maundy thursday I was a bit down-cast as not made as much progress as I hoped. So my mate (who's place is where I am building the kit) saw my mood and suggested a trial fit of the bonnet. We then put on the rear clam (using a few bolts to hold in place only) and then I placed the boot in position. It cheered me up and I have a day next week to get the rear clam offered up properly as well as an inner boot piece. The Kobra boot is longer than the original so needs extra grp panel fitted.

    Anyway here is the artist's representation of what it could look like one day..... More to come soon.

    Dave

    bonnet trial fit 1.jpg rear view trial fit 1.jpg side view trial fit.jpg
     
    • Like Like x 8
  17. Antm72

    Antm72 Zorg Expert (II)
    Supporter British Zeds

    Joined:
    May 4, 2015
    Messages:
    6,643
    Likes Received:
    4,257
    Trophy Points:
    231
    Location:
    South Yorkshire
    Model of Z:
    2.8
    Coming on well great work :thumbsup:
     
    • Agree Agree x 1
  18. t-tony

    t-tony Zorg Expert (I)
    Supporter British Zeds #ZedShed

    Joined:
    Dec 31, 2013
    Messages:
    31,418
    Likes Received:
    14,847
    Trophy Points:
    220
    Location:
    Torksey Lock,Lincoln, England
    Model of Z:
    Z4 3.0 Auto
    I love seeing these type of build threads Dave. Look forwards to the next instalment.

    Tony.
     
    • Agree Agree x 1
  19. DaveP

    DaveP Zorg Legend
    British Zeds

    Joined:
    Mar 26, 2016
    Messages:
    465
    Likes Received:
    298
    Trophy Points:
    83
    Location:
    Reading
    Model of Z:
    Z3 2.2
    Thanks gents :) considering I’m an arm-chair mechanic I’m enjoying the work.

    Dave
     
    • Like Like x 2
  20. hard top

    hard top Zorg Expert (I)
    Dutch Zeds The M44 Massive

    Joined:
    Dec 5, 2011
    Messages:
    20,779
    Likes Received:
    6,062
    Trophy Points:
    213
    Location:
    Netherlands
    Great stuff :thumbsup:
    There is only one thing that would stop me from doing something like this, the roof line.
    For people in the know, it always screams Z3 IMHO ....