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  • M Coupe Resto and Engine Rebuild !

    Hello everyone,

    As some of you already know, I sold my beloved Dakar MC last year. But the life without a MC was so unbearable that a few months ago, I bought another one :) The new car was turbo'ed by the PO which I admit was part of the charm for me although I am a die hard NA man. I just wanted something different then my Dakar MC. But after a few months of ownership the novelty of Turbo setup wore off and I missed the driving characteristics of a strong NA engine.
    So as off last month, I have started work on reversing the car to NA and doing other bits and mods along the way.

    I had a similar thread for my Dakar MC last year which was fun to create, here it is,
    Dakar MC Restoration From Turkey

    I know many of us like these build threads so I decided create another one for the new ride.

    Here is a list of things we did so far,

    -Turbo Kit taken out
    -Extra Gauges and control units (EVC,AFR DEFI etc.) taken out
    -Engine Cover stripped of cheesy paint theme
    -All the fluids replaced (TWS for Engine, FM Booster for Diff, SRT for brakes and OEM Trans Fluid)
    -Alu look door trim installed ( To match the exterior color )
    -New Floor mats put and leather bordered
    -Custom Pedal Set designed and installed
    -Engine taken out for NA rebuild and stripped of boy racer paint
    -Hamann Roof wing replaced with ACS piece.
    -Replaced painted grills with OEM chrome parts.
    -OEM Short Roof Antenna put in.

    What is next ?

    -Full NA engine rebuild
    -CF Airbox
    -Repainting every engine part to stock colors
    -Polishing stock headers before install
    -Removing Hamann Side Skirts and maybe rear side diffusers ?
    -Leather reconditioning of the interior
    -Adding red stitching to door grabs and center console L pieces
    -Replacing aftermarket headunit and cd changer with OEM parts
    -ECU tune to run the airbox
    -Replacing worn BBS center caps with new ones.
    -Major detailing including underbody to finish everything off.

    and as always taking care of little surprises and hiccups along the way :)

    So, lets begin,

    This is her, aka " Junior " the day I bought her with po's plates,



    First things first, we replaced all fluids, (TWS for Engine, FM Booster for Diff, SRT for brakes and OEM Trans Fluid)
    Old Diff oil. This so called lifetime oil was literally black,





    New OEM Diff Oil with FM Booster put in ($$$$!)



    Before moving in to engine rebuild, I made some cosmetic enhancements,
    Replaced the black door trims with alu look trim to give a little contrast to the cabin and reflect the exterior color.

    Before,



    After,



    Then got some new floor mats and leather bordered them in red to highlight them a bit,





    Then replaced the Hamann pedal set with custom pedals made specifcly for my car by www.bmwpedals.com

    Hamann set before,



    Custom Set,







    Last thing for the interior was to remove the turbo control units and replacing the ashtray,

    before,



    after,

    Can,

    '87 M3
    '95 M3 GT
    '00 M Coupé
    '04 M3 CSL

  • #2
    And then I moved to the engine. How the engine looked when I got it. With lots of custom paint and F&F colored hoses and etc..





    And then the engine came out for the rebuild,





    First I wanted to attend to the engine cover. Removing the old paint and preparing for repaint to OEM black.

    Used a fair bit of paint remover,



    Paint remover working its magic,



    Lots of scrubbing with sand paper and wire brush,



    Almost there,



    Then I let it cool down a bit and moved to the engine block for the same process,

    Terrible red theme :(





    Paint remover applied,



    Spray washed,



    Almost there,



    I'll have another go at it with gas and alcohol before the paint this weekend.

    Super glad with the cleaning stuff, I set my sights on the throttle bodies. Since those are a little complicated to dismantle, I left the job to my mechanic and then I started.

    Before,



    Almost two hours of scrubbing, washing and brushing with various stuff,



    I believe they turned out pretty good.

    So that's it for now, I plan to do more work this weekend and I'll post every update here as much as I can. Thanks for looking.
    Can,

    '87 M3
    '95 M3 GT
    '00 M Coupé
    '04 M3 CSL

    Comment


    • #3
      Quite some work going on!

      Are you doing it all yourself?
      2002 '52 S54 - Titanium Silver with 18" BBS LMs, AP Racing BBK, KW V3, H&R anti roll bars & ACS flippers (previously 2000 'X' S50 - Arctic Silver)

      Comment


      • #4
        you have been busy -keep us updated

        Comment


        • #5
          Very interesting read - however you should've kept the Dakar.;)
          Out: 99 S50 Titan Silver V876 KKO
          In: 98 S50 Estoril.......

          Comment


          • #6
            Powerful N/A FTW ;) good luck mate !
            I'm not a clown but the shoe is ///Mine
            sigpic

            Estoril/Estoril/black, B&M SSK, 6Spd S6S-420G, Strong Strut, R.Forbes sub-frame kit & RE dual ear diff cover, Supersprint Race Headers & Resonators & DTM Cat-backs, Bilstein B6 Sport, BBS RC 301 & 303 8.5/10x18" wheels, Alcon Mono6 355mm Front & Mono4 332mm Rear Full Floating BBK, Pro Ramp Variable Lock %75 LSD

            Comment


            • #7
              Originally posted by Spooks View Post
              Quite some work going on!

              Are you doing it all yourself?
              Thanks. I do most of the cleaning up and polishing and spray paint stuff. The rest is all my mechanic.
              Originally posted by Dave P View Post
              you have been busy -keep us updated
              Will do Dave, thanks.
              Originally posted by h4pry View Post
              Very interesting read - however you should've kept the Dakar.;)
              You should have kept the TiSilver ;)
              Originally posted by cemalakcal View Post
              Powerful N/A FTW ;) good luck mate !
              Thanks man, NA RULEZZZZ !
              Can,

              '87 M3
              '95 M3 GT
              '00 M Coupé
              '04 M3 CSL

              Comment


              • #8
                After yesterday's clean up, I put the first coat of black paint on the block.

                First I masked all the necessary areas and heated each side before paint,



                Then the first coat of black was sprayed,



                I want this paint to stick so I am taking my time with it. Will put the second coat on monday before we start the rebuild. Keep watching !
                Can,

                '87 M3
                '95 M3 GT
                '00 M Coupé
                '04 M3 CSL

                Comment


                • #9
                  Today, I put the second and third coat of paint on the block and finally it looks clean and new.



                  Now that the block was ready, we started the rebuild. Piston and rods prepped,



                  First the crank went in,


                  Then the pistons,



                  That was it for today, tomorrow I'll take the headers to my polisher to give it a much needed freshen up before install. Then my paint guy will take a look at the hood which was raped with bonnet clips :mad: to give me an estimate. And wheel lip resto will follow.
                  Can,

                  '87 M3
                  '95 M3 GT
                  '00 M Coupé
                  '04 M3 CSL

                  Comment


                  • #10
                    Done a bit more engine work today,

                    Put on a new water pump and installed the oil filter housing after a thorough clean up,





                    Oil pan put back,



                    New head gasket in,



                    Headgasket before cleaning,





                    and cleaned and installed,





                    Almost there. Engine should be done by the weekend. Still looking for the headers, they are hard to find :(
                    Can,

                    '87 M3
                    '95 M3 GT
                    '00 M Coupé
                    '04 M3 CSL

                    Comment


                    • #11
                      Well done looking good!

                      Comment


                      • #12
                        Hi,

                        Looks very interesting. Nice work !

                        When taking the engine off, did you drop it down or pick it up from the engine bay ?

                        Did you also remove the gearbox together with the engine ?

                        Some pictures would be nice on the steps when putting the engine back, because I understand that the space is somewhat limited and I would like to know what the best way to remove/put the engine back might be.

                        You might also want to replace the small valve which is shown below in the red engine block close to the rear end of the engine and which looks like a big screw head. The gasket of that is known to let go at some point of time and it causes a messy oil leak and is very challenging to change with the exhaust headers in place and engine in the car. Guess how I know this :)

                        It is the "constant pressure valve" part 3 in this schematic : http://bmwfans.info/parts/catalog/Z3...ounting_parts/

                        br, Juha

                        Originally posted by CLUBBER View Post
                        Terrible red theme :(
                        The older I get, the faster I was ...
                        BMW HP2 Sport
                        ex- BMW Z3 M Coupe - Cosmosschwartz Metallic

                        Comment


                        • #13
                          Originally posted by boostina3 View Post
                          Well done looking good!
                          Thanks.
                          Originally posted by JuhaV View Post
                          Hi,

                          Looks very interesting. Nice work !

                          When taking the engine off, did you drop it down or pick it up from the engine bay ?

                          Did you also remove the gearbox together with the engine ?

                          Some pictures would be nice on the steps when putting the engine back, because I understand that the space is somewhat limited and I would like to know what the best way to remove/put the engine back might be.

                          You might also want to replace the small valve which is shown below in the red engine block close to the rear end of the engine and which looks like a big screw head. The gasket of that is known to let go at some point of time and it causes a messy oil leak and is very challenging to change with the exhaust headers in place and engine in the car. Guess how I know this :)

                          It is the "constant pressure valve" part 3 in this schematic : http://bmwfans.info/parts/catalog/Z3...ounting_parts/

                          br, Juha
                          They picked the engine up from the engine bay but before that, they put the trans down. I will take pictures when it goes in. It is much easier to put the headers on before the engine goes in as far as tight is concerned.

                          Great tip on the valve, I'll check on that. If it is easy to find, I'll replace it. Is it this one ?

                          Can,

                          '87 M3
                          '95 M3 GT
                          '00 M Coupé
                          '04 M3 CSL

                          Comment


                          • #14
                            No, it is left from the arrow right next to the rear end of the engine (the clutch side). It has the slot at the end for a "big screwdriver".

                            The part looks like this : http://www.turnermotorsport.com/show...3-s54-and-z4-m

                            The valve as original has a metallic O-ring which evidently at some point loses it capability to seal the pressurized oil. The new ones have a Viton or some other type high quality rubber O-ring instead.

                            In this pic you can see the valve as the bright part through the "loop" of the exhaust header for cylinder 6 : http://my.opera.com/v2tre/albums/sho...ture=130829962

                            By the way, if you are still looking for the exhaust headers, I do have a pair. They are otherwise in good condition, but the flex part in the other has a hole but easily replaceble by welding (in a jig) a replacement flex. The other is rigid all the way without the flex as you know. Mileage of those is about 90 000 km and I replaced the with used ones last year by removing them with engine in the car. And yes, that was a tight one ! Pic : http://my.opera.com/v2tre/blog/2012/...-ja-ehja-kayra

                            However, those parts are here in Finland and the postage would not be cheap. But if you cannot locate them elsewhere, please contact me.



                            br, Juha
                            Last edited by JuhaV; 17-01-2013, 08:06 AM.
                            The older I get, the faster I was ...
                            BMW HP2 Sport
                            ex- BMW Z3 M Coupe - Cosmosschwartz Metallic

                            Comment


                            • #15
                              Originally posted by JuhaV View Post
                              No, it is left from the arrow right next to the rear end of the engine (the clutch side). It has the slot at the end for a "big screwdriver".

                              The part looks like this : http://www.turnermotorsport.com/show...3-s54-and-z4-m

                              The valve as original has a metallic O-ring which evidently at some point loses it capability to seal the pressurized oil. The new ones have a Viton or some other type high quality rubber O-ring instead.

                              In this pic you can see the valve as the bright part through the "loop" of the exhaust header for cylinder 6 : http://my.opera.com/v2tre/albums/sho...ture=130829962

                              By the way, if you are still looking for the exhaust headers, I do have a pair. They are otherwise in good condition, but the flex part in the other has a hole but easily replaceble by welding (in a jig) a replacement flex. The other is rigid all the way without the flex as you know. Mileage of those is about 90 000 km and I replaced the with used ones last year by removing them with engine in the car. And yes, that was a tight one ! Pic : http://my.opera.com/v2tre/blog/2012/...-ja-ehja-kayra

                              However, those parts are here in Finland and the postage would not be cheap. But if you cannot locate them elsewhere, please contact me.



                              br, Juha
                              Thanks for all the great tips, I'll check on that valve today. I also sent you a pm regarding the headers.
                              Can,

                              '87 M3
                              '95 M3 GT
                              '00 M Coupé
                              '04 M3 CSL

                              Comment

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