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    • How about a 1225 hp BMW E30 S38 turbo swap? 9 second Precision PT8285 turbo S38 E30 3-Series on E85 by Boba Motoring

      Have you heard of Boba Motoring? They are a German tuner that just kind of goes crazy stuffing a ton of turbo power into older German cars. For example, a MKII VW Golf with a 4Motion all wheel drive system retrofitted to help put down 1150+ horsepower from a turbo 2.0 liter pushing 58 psi of boost.


      Yep, crazy stuff. They do not just do VW's but decided to go all out on an E30 BMW. They swapped in the S38 motor (the best BMW M motor of all time) and gave it a top mount Precision PT8285 turbo. With E85 fuel the result is 1225 horsepower at 33 psi of boost. And yes, unlike other German tuners they provided the graphs to back up the claims.


      If the graph isn't enough there is also the car going 9.19 @ 159.53 miles per hour in the 1/4 mile. It helps that it only weighs 2912 pounds but also keep in mind you have to row your own gears.


      While guys on the forums debate the N54 vs. the N55 or the S55 motor the older M inline-6 engines are blowing them so far away it isn't even a contest at this point.

      N54 what?


      This article was originally published in forum thread: How about a 1225 hp BMW E30 S38 turbo swap? 9 second Precision PT8285 turbo S38 E30 3-Series on E85 by Boba Motoring started by Sticky View original post
      Comments 19 Comments
      1. richpike's Avatar
        richpike -
        I can't even... Definition of badass.

        -Rich
      1. subaru335i's Avatar
        subaru335i -
        Love these guys. That 16V vampir golf is awesome and this is even cooler.
      1. Sirdaft1's Avatar
        Sirdaft1 -
        "N54 what?" is right. I need one of those in my 335.
      1. Sirdaft1's Avatar
        Sirdaft1 -
        For anyone looking for an S38b35... Click here to enlarge
        http://www.r3vlimited.com/board/showthread.php?t=379623
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Sirdaft1 Click here to enlarge
        $4k... not bad.
      1. Sirdaft1's Avatar
        Sirdaft1 -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        $4k... not bad.
        Looks like she may need a rebuild. Probably not a bad idea to do anyways.

        **ponders swapping it into his e30 track car...**
      1. BigM62's Avatar
        BigM62 -
        Just my opinion, but I can't get excited on a 204 hp engine, no matter how "storied" it is. Maybe in a light weight Miata or Datson 510. Better yet, turbo it.
      1. G0TB00ST?'s Avatar
        G0TB00ST? -
        You can't get excited about an engine over 20 years old that is still relevant? Not to mention this 20 year old engine is making well over 1000whp when some of these modern engines are struggling to break 600. Granted it's had more time for RnD, but still this is an "out dated" engine making 4 digit power. I don't care what engine it is or what power it makes stock the thought of an engine having that kind of potential get will get my dick hard any day.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by BigM62 Click here to enlarge
        Just my opinion, but I can't get excited on a 204 hp engine, no matter how "storied" it is. Maybe in a light weight Miata or Datson 510. Better yet, turbo it.
        That engine easily puts out way more than that even naturally aspirated. You can get it will into the 400's.
      1. BigM62's Avatar
        BigM62 -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        That engine easily puts out way more than that even naturally aspirated. You can get it will into the 400's.
        310 hp stock for E34 M5 US. You are saying you can get to 400rwhp reliably on NA engine? Pray tell.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by BigM62 Click here to enlarge
        310 hp stock for E34 M5 US. You are saying you can get to 400rwhp reliably on NA engine? Pray tell.
        400 whp NA S38's have been done but I was talking crank there. Low 300's is basically nothing out of the motor and what we were given stock.

        Here is just a tune, 320 whp:

        Click here to enlarge
      1. ba114's Avatar
        ba114 -
        awesome! mines never gonna touch that Click here to enlarge
      1. The Ghost's Avatar
        The Ghost -
        Awesome! And think of how light it Is.
      1. G0TB00ST?'s Avatar
        G0TB00ST? -
        Click here to enlarge Originally Posted by The Ghost Click here to enlarge
        Awesome! And think of how light it Is.
        I could be wrong, but I'm pretty sure it has an iron block. So it's probably about the same weight as the s54 give or take a few pounds.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by G0TB00ST? Click here to enlarge
        I could be wrong, but I'm pretty sure it has an iron block. So it's probably about the same weight as the s54 give or take a few pounds.
        I believe he's referring to the E30 chassis.
      1. BigM62's Avatar
        BigM62 -
        "Here is just a tune, 320 whp"

        Ah, the Peruvian tune.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by BigM62 Click here to enlarge
        "Here is just a tune, 320 whp"

        Ah, the Peruvian tune.
        Hey S38 graphs aren't exactly in abundance Click here to enlarge

        When I have time I'll look for a 400 whp na graph.
      1. subaru335i's Avatar
        subaru335i -
        Click here to enlarge Originally Posted by G0TB00ST? Click here to enlarge
        I could be wrong, but I'm pretty sure it has an iron block. So it's probably about the same weight as the s54 give or take a few pounds.
        Lets make it clear weightwise!

        S38B36-151kg +/-1kg Cast Iron Block
        S38B38-151kg +/-1kg Cast Iron Block
        S50B32-152kg +/-1kg Cast Iron Block
        S54B32-148kg +/-1kg Cast Iron Block!
        S62B50 V8-168kg! +/-1KG
      1. subaru335i's Avatar
        subaru335i -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Hey S38 graphs aren't exactly in abundance Click here to enlarge

        When I have time I'll look for a 400 whp na graph.
        https://s14net.vbulletin.net/forum/s...843-e30-m3-s38

        No dyno graph but the mods involved to get there NA.