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Thread: Nobody laugh please, Weird swap L67/supercharged into a subaru baja

  1. #1

    Nobody laugh please, Weird swap L67/supercharged into a subaru baja

    I am planning on doing a engine swap that borders on frankenstein. I have a 2005 subaru turbo baja that has a DEAD motor. I have also owned a 1995 buick park avenue ultra years ago. I remember it was pretty quick off the line. Sooooo, I want to put a 3.8 supercharged V-6 into the AWD subaru, but wait it gets better. I also want to put in the surbaru turbo on the V-6 so I can run through the turbo and supercharger at the same time ,Remember dont laugh...LOL. I have the donor car with the V-6 supercharger and harness if needed. I have a few questions. Is there a good stand alone controller for the timing and injectors that uses exhaust info, temp ect. I can pretty much make a adaptor plate out of 3/4 alu.. There comes another question. The flex plate on the supercharged V-6, is it balanced or special in any way. Also can I just put a spacer ring/or spacers under the subaru Torque converter after i redrill the flex plate for the new TC pattern to get the correct distance from the flexplate and block. This swap sounds weird but this baja looks like a truck and could amost take a BMW 3 series from light to freeway at 110mph. I really want it to be a quicker sleeper. The main reason for not rebuilding the 2.5 subaru motor is the worry of head gasket problems and money its about 5-7k to rebuild the 2.5 right. So why not go big or go home...The V-6 is only about 67 lbs more than the 2.5 H4 motor so the handling "should" not be greatly affected. Thanks for your time

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  3. #2
    Taking the Twisties pace's Avatar
    Join Date
    Aug 2008
    Among other issues you will find with this swap, that turbo will be greatly undersized for the V6 engine.
    '99 Camaro
    '04 Saab 9-3 Aero
    '90 Audi Coupe Quattro

  4. #3
    Well im not 100% dedicated to the stock turbo but what other issues can you think of. And do you have any suggestions. Thanks

  5. #4
    Join Date
    Mar 2008
    Pensacola, Fl
    I wouldn't bother with twin charging at all, really will just be a bunch of headaches. I'd just dump a L67/L32 into it and be done.

    BUT, being a fellow suby owner (2013 WRX and a 2015 OB), I would just throw a new EJ255 with forged pistons and call it a day. Put a DP, intake, and a tune and you'll be sitting very nicely.
    1997 Camaro - sold
    2013 WRX - the awd DD

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