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Castro Motorsport: Bar Legal S50 E30 M3

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  • Castro Motorsport: Bar Legal S50 E30 M3

    So almost a year ago, Chris Castro received a call from our customer Alex, wanting to swap in an s50 or s52 into his '88 M3, which had been sitting in storage for 7 years. As usual we were up for the task, seeing that we had done a dozen 24 valve e30 swaps prior to taking on this project. Chris Castro spoke with Alex a few more times to iron out all the details of the project and his budget. Next, we scheduled a date to head up to Santa Barbara, meet with Alex in person, and tow his car back to the shop. :

    Alex had purchased this car out of high school and enjoyed it for almost 3 years before having an overheating incident, which put the car out of commission. Knowing full well that the E30 M3 was getting harder to find due to its rarity, Alex made the smart decision to store the car at a relatives’ until he could put it back on the road. After looking at the cost of an s14 rebuild, Alex decided to go a different route. He wanted more power then what the M3’s original had to offer, along with a more reliable motor, with low cost maintenance. Well he definitely made the right choice, as the s50 and s52 motors are pretty bullet proof and offer a nice power-band for the lighter E30 chassis. :werd:

    When Chris and I met up with Alex, and pulled the car out of his aunt’s garage, we saw yet another M3 in need of a rescue! The original s14 was missing some parts after Alex's brother took it apart in an attempt to fix it. The motor had seized and was in need of a full rebuild. All the bushings and brake lines were in need of replacement. The paint was a bit dull and needed a polish. Needless to say this car was the perfect candidate for the project Alex had in mind!

    So the car made it's way down to our shop in North Hollywood, for an Extreme Makeover – Castro style! :woowoo:

    Specs on the car:

    Motor -
    Low mileage, s50b30 engine swap from a '95 M3
    Castro Motorsport Short Ram intake + Airbox
    s52 tubular exhaust manifolds
    Custom dual 2.25" mandrel bent exhaust built by Castro Motorsport
    Custom dyno tune for the listed modifications

    Drivetrain-
    Matching ZF310 5 speed transmission
    2.93:1 LSD
    F1 Racing Stage 1 clutch
    F1 Racing lightweight flywheel
    Ralco short shifter

    Suspension & Steering-
    Custom coil-overs - 650# (F) / 800# (R)
    Koni top adjustable shocks front and rear
    Ground Control Camber-Caster plates
    Ireland Engineering 22mm front/ 19mm rear swaybars
    Ireland Engineering polyurethane rear trailing arm bushings
    Ireland Engineering polyurethane rear sub-frame bushings - race compound
    Racing Dynamics front strut brace
    95 M3 Steering Rack
    Ireland Engineering polyurethane steering coupler

    New OE M3 offset control arm bushings
    New OE M3 sway bar links - front & rear

    Wheels & Tires-
    Staggered offset 17x8.5 BBS CH: et38 front with 20mm spacer, et15 rear no spacer
    235/40/17 Federal 595RS
    Brakes-
    Factory brakes
    New Pagid pads
    New Brembo blank rotors
    Ireland Engineering stainless steel braided brake lines
    Ate Superblue performance brake fluid


    On to the pics: (sorry for the poor quality)

    How she came





























    Last edited by e30polak; 01-23-2012, 04:44 PM.
    Check me out on Facebook: Undr8d Empire: www.facebook.com/Undr8dEmpireLlc

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    Scarlet #Project333ti by @castromotorsport @kingsautobodyshop @excel_motorsports @bimmerheads @mateomotorsports - http://www.stanceworks.com/forums/sh...=1#post1493600

  • #2
    Out with the old!








    Hey where did the motor go?
    :p





    Suspension work and reinforcements:




    Poly rear subframe bushings














    Poly rear trailing arm bushings







    Rear sway bar and reinforcements

    Sway bar tab BEFORE:



    Sway bar tab AFTER:





    Sway bar mounting surface BEFORE:







    Sway bar mounting surface AFTER:

    (Nut permanently welded, to prevent the usual issue with larger sway bars)











    New bar, with mounts, links and bushings







    Poly steering coupler and e36 steering rack

    Last edited by e30polak; 01-26-2012, 05:33 PM.
    Check me out on Facebook: Undr8d Empire: www.facebook.com/Undr8dEmpireLlc

    Check me out on Instagram
    : @UNDR8D_EMPIRE


    Scarlet #Project333ti by @castromotorsport @kingsautobodyshop @excel_motorsports @bimmerheads @mateomotorsports - http://www.stanceworks.com/forums/sh...=1#post1493600

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    • #3
      Unfortunately I don't have anymore pics of the new motor installation, and some other bits, but here are some finished product pics!
















      Last edited by e30polak; 01-26-2012, 05:39 PM.
      Check me out on Facebook: Undr8d Empire: www.facebook.com/Undr8dEmpireLlc

      Check me out on Instagram
      : @UNDR8D_EMPIRE


      Scarlet #Project333ti by @castromotorsport @kingsautobodyshop @excel_motorsports @bimmerheads @mateomotorsports - http://www.stanceworks.com/forums/sh...=1#post1493600

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      • #4
        Love that RD strut bar!

        Email | Website | Facebook | Instagram @Broadway_Static

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        • #5
          Sex
          1981 300TD 4 speed
          2000 BMW M5

          Mike Finnelly
          , on Flickr
          IG @michaelfinnelly

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          • #6
            OOh Baby, that is SEXY!!

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            • #7
              mmmm, video?

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              • #8
                Really nice ride !!

                Just wonder why you didn`t get a S50B32 or B30 euro spec?

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                • #9
                  so you threw out the fantastic S14 . . just to install a boring US-Spec S50?? . . why? . .
                  my Bimmers . . . -> HERE!! <-
                  my unhealthy amount of Wheels!! . . . -> HERE!! <-

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                  • #10
                    Originally posted by Jesus Christ View Post
                    Love that RD strut bar!
                    Ya, we have a spare one if you're interested!

                    Originally posted by FRANK_NL View Post
                    Really nice ride !!

                    Just wonder why you didn`t get a S50B32 or B30 euro spec?
                    It all came down to working within Alex's goals for the project, while also staying within his budget. A low mileage s50b32 would have been a minimum of $4,500. Then you have to compromise the brake system, due to the size of the intake plenum on the Euro motor. Lastly, the availability and cost of parts for us in the US, make a Euro s50 much less desirable.

                    IMO with the prices of S54s these days, the s50b32 isn't worth the effort.

                    Originally posted by MrZog View Post
                    so you threw out the fantastic S14 . . just to install a boring US-Spec S50?? . . why? . .
                    God I love responding to purists! Let me get the list going (most of this was covered in the initial post, but I'll repeat it)

                    1. Alex wanted a lot more power then the s14 had to offer.

                    2. Alex wanted a low maintenance, reliable engine. The US s50/2 are pretty bullet proof, especially when compared to the high cost, high maintenance s14.

                    3. The cost of building the s14 to Alex's power goals, would've meant a full 2.5L stroker with aggressive cams, DTM airbox, rally header, and standalone = $10K +. That's alot of money to spend on a motor that will have roughly the same power as a bolt-on and tuned s50/2, but with a much less useable powerband for the streets.

                    4. Alex preferred the sound and behavior of a variable valve timed inline six, then the peaky nature of the buzzy s14.

                    All in all, I love the s14 motor for what it is, but it's only fun in a gutted e30 m3 track car, or in a 2002!
                    Check me out on Facebook: Undr8d Empire: www.facebook.com/Undr8dEmpireLlc

                    Check me out on Instagram
                    : @UNDR8D_EMPIRE


                    Scarlet #Project333ti by @castromotorsport @kingsautobodyshop @excel_motorsports @bimmerheads @mateomotorsports - http://www.stanceworks.com/forums/sh...=1#post1493600

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                    • #11
                      way sexy.... anymore info on the bushings and M swap?


                      "Never argue with an idiot; they'll drag you down to their level and beat you with experience"

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                      • #12
                        So nice to see the first post consisting of "starting" pictures, second post "during" pictures, and the third post of how it sits now. Any future plans?

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                        • #13
                          gawd i love s50 in a e30! Great job you guys!
                          sigpic

                          Follow me on Instagram! @cskzero

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                          • #14
                            Originally posted by TeckniX View Post
                            way sexy.... anymore info on the bushings and M swap?
                            PM me for more info, or feel free to email me: cebialy@gmail.com

                            Originally posted by sacrifice View Post
                            So nice to see the first post consisting of "starting" pictures, second post "during" pictures, and the third post of how it sits now. Any future plans?
                            Well then you'll love the next few builds I post over the next couple of months!


                            Originally posted by Chuckdee View Post
                            gawd i love s50 in a e30! Great job you guys!
                            Thanks!
                            Check me out on Facebook: Undr8d Empire: www.facebook.com/Undr8dEmpireLlc

                            Check me out on Instagram
                            : @UNDR8D_EMPIRE


                            Scarlet #Project333ti by @castromotorsport @kingsautobodyshop @excel_motorsports @bimmerheads @mateomotorsports - http://www.stanceworks.com/forums/sh...=1#post1493600

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                            • #15
                              perfection is an understatement, awesome classic build


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