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  1. #1
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    Castro Motorsport: Sebo's S50 Turbo E30 Sedan

    Hi Guys,

    Meant to post this the other week, but I simply haven't had the time. So, about a year ago our friend Sebo came by the shop with a fairly stock 325e 4 door that he wanted some work done to. Sebo is good friends with our buddy Abby (-ak-), which has a clean M20 turbo E30 we built a while ago, and has been an E30 head for the past few years. Needless to say Sebo has received a bit of guidance in his E30 journey from Abby. Luckily Sebo's been keeping track of his build from the beginning, so I can give a full story.

    (Pic of Abby's car for reference)

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    Here's the E30 the day that Sebo bought it, by every definition it was STOCK!

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    First thing Sebo did was buy some US spec ellipsoid head lights to get rid of the original sealed beams, along with some HIDs.

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    Next came the plastic bumper swap for the front

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    Then fresh euro bumper trim and an iS lip

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    Of course the E30 needed some new shoes, so Sebo grabbed some 16x8 Miro wheels

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    And he added some Megan coil-overs to stance it properly

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    Luckily he had some friends to help install the coils

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    And the finished product

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    Some euro grilles for the front end

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    And this is the point in the story where Sebo came to our shop. Initially he had us *** exhaust, and then it snowballed from there. He added some iS side skirts, an E28 Mtech trunk spoiler, and a plastic rear bumper by this time as well.

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    Seeing how much fun and how quick Abby's turbo E30 was, Sebo initially planned to do a crazy M20 turbo set-up. We planned to use a 666fab twin-scroll top mount manifold, with a gt3076, with a big divided hot-side and dual 44mm wastegates, megasquirt v3, etc. While it would've been an epic M20 set-up, the cost wouldn't have been worth it when a 24v engine could've been built even better for a similar price! Back to the drawing table!

    In the mean time he had the car painted BMW Space Grey

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    And the finished product

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    Then we made some all red tail lights for Sebo and added a euro plate filler

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    Next we sourced Sebo some nice staggered 16x8 & 16x9 BBS RS off a Porsche, which he had filled and drilled to 4x100 and refinished. They look soooooooo good on his car! Click here to enlarge

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    Shortly after getting the wheels, we found a good donor car for Sebo's S50... Click here to enlarge

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    Now that we had the motor, we spec'd out the full swap and turbo build for Sebo. Here's what we came up with:

    US Spec S50B30
    0.140 MLS Head Gasket
    Arp2000 Head Studs
    Tack welded oil pump nut
    Matching ZF310 Trans
    F1 Racing Stage 4 Clutch
    F1 Chromoly Lightweight Flywheel
    Castro Motorsport Built 2.79 LSD
    Turbonetics GTK550 Ball Bearing Turbo (.82 exhaust side)
    Turbo Blanket
    Miller Performance 60# Injector, Blo-Thru MAF & WAR Chip Tuning Package
    Tial MV-R 44mm Wastegate
    Greddy Blow Off Valve
    Blunttech/Rapid Spool Industries Top Mount 24v E30 Turbo Manifold
    Custom 3" intercooler and cold-side piping by Castro Motorsport
    3" mandrel bent exhaust (Straight back to a Borla Pro-XS)

    by Castro Motorsport
    Custom aluminum intake manifold + large throttle body by castro Motorsport
    God Speed Intercooler
    CX Racing Aluminum Radiator
    Walbro 255lph Fuel Pump
    2 Custom tunes done by Dan Miller in house: conservative 10 psi (370whp/360wtq) & 15 psi (441whp/427wtq)
    AEM Uego AFR and Boost gauges

    Getting the S50 prepped with the new MLS and Arps

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    Turbo manifold, turbo, wastegate, and aluminum intake manifold head flange test fit

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    Sebo's E30 waiting patiently for it's new heart! Click here to enlarge

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    Motor in, intercooler mounted, and intercooler piping almost complete Click here to enlarge

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    Close ups of the turbo,
    intercooler, BOV, downpipe and wastegate before install

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    Installed

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    Wastegate tube and exhaust finished

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    Installed

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    Intake piping done, and the car is ready to start! Click here to enlarge

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    Finished product!!! Click here to enlarge

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    And the owner himself
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    Exhaust Clip:



    In Car Videos (50-150) Pulls:

    https://vimeo.com/54049772
    https://vimeo.com/54050662




  2. #2
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    wow man, that's a sick car. Click here to enlarge

  3. #3
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    1 out of 1 members liked this post. Reputation: Yes | No
    Click here to enlarge Originally Posted by Sorena Click here to enlarge
    wow man, that's a sick car. Click here to enlarge

    Thanks! Ya, Sebo's car is pretty sick! Click here to enlarge

  4. #4
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    Holy $#@! what a build... nice man! Great thread, fantastic.

    What does she put down?

  5. #5
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    Great build! I have been a fan of your work for a while now. I bet that E30 is a blast to drive!

  6. #6
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    Click here to enlarge Originally Posted by e30polak Click here to enlarge
    Thanks! Ya, Sebo's car is pretty sick! Click here to enlarge

    Welcome to the forum. Hi 5
    Click here to enlargeClick here to enlarge

  7. #7
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    Dyno chart?

  8. #8
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    A great example of the excellent work they do over at Castro's!

  9. #9
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    Car looks great. Love the 4 e30's, and with boosts even more.


    Hi 5
    Click here to enlargeClick here to enlarge

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