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Thread: Twin Turbo Conversion info

  1. #1
    Large Member Feedback Score 0 SilverBullet's Avatar
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    Twin Turbo Conversion info

    Back in 2001 I was one of the first to complete a twin turbo conversion on my n/a 3S. I'm sure there have been new findings for better ways to do the conversion since then, but here's the information I've compiled. It's the same information still posted on 3SX.com, but I figured I'd post it here, too. It might be helpful for anyone wanting to take on this task.

    -----------------------------------------
    Here's a list of parts you'll need.

    Turbos from a VR-4, either the TD04 9b's or TD04 13g's, with wastegate actuators
    Exhaust manifolds and the manifold gaskets from a VR-4
    Oil housing from a VR-4
    Oil feed and oil return lines for the turbos, and all the eyebolts and gaskets
    "Joint" on the back of the engine block for the rear oil feed line
    Modified non-turbo oil pan to accept oil return lines
    Water housing from a VR-4
    Water feed and water return lines for the turbos, and all the eyebolts, washers, and gaskets
    o2 housings and pre-cats from a VR-4
    Downpipe from a VR-4 (remember that if you have Gen 1 pre-cats, you need a Gen 1 downpipe, etc)
    Fuel injectors from a VR-4. The stock 360cc injectors are just fine.
    Fuel pump from a VR-4.

    Electronics/Gauges you'll need
    S-AFC, S-AFR, or some other way to control the fuel.
    Boost gauge
    Air/Fuel ratio gauge
    Exhaust Gas Temperature gauge (two is better)
    Pocketlogger - very useful for monitoring everything, especially knock

    Optional things (or things other might tell you that you need)

    ECU from a VR-4
    Engine wiring harness from a VR-4
    Injector resistor pack from a VR-4
    Boost controller

    The parts below in the table are new parts I got from Mitsubishi, and they're mainly the oil/coolant lines and all the bolts and gaskets you need for that and for the exhaust.

    Mitsu Part# Description Quantity

    Oil Lines
    Front (Right)
    MD161898 Tube, T/C Oil Feed, RH 1
    MF650102 Eyebolt, T/C (feed line) 2
    MF660063 Gasket, T/C (feed line) 4
    MD160039 Tube, T/C Oil Return, RH 1
    MR258477 Gasket, T/C Oil Return Tub 2
    MF241225 Bolt, T/C (return line from T/C) 2
    MD193110 Bolt, T/C (return line to pan) 2

    Rear (Left)
    MD174793 Tube, T/C Oil Feed, LH 1
    MD145960 Joint, T/C (feed line) 1
    MF660063 Gasket, T/C (feed line) 3
    MF650102 Eyebolt, T/C (feed line) 1
    MR266015 Tube, T/C Oil Return LH 1
    MR258477 Gasket, T/C Oil Return, LH 2
    MF241255 Bolt, T/C (return line from T/C) 2
    MD193110 Bolt, T/C (return line to pan) 2

    Coolant Lines
    Front (Right)
    MD194061 Pipe, T/C Water Feed, RH 1
    MS650013 Eyebolt, Cooling water line 1
    MF660064 Gasket, Cooling water line 2
    MD153689 Pipe, T/C Water Return, RH 1
    MS650013 Eyebolt, Cooling water line 1
    MF660064 Gasket, Cooling water line 2

    Rear (Left)
    MD158758 Pipe, T/C Water Feed, LH 1
    MD158989 Eyebolt, Cooling water line 1
    MF660064 Gasket, Cooling water line 2
    MD153691 Pipe, T/C Water return, LH 1
    MS650013 Eyebolt, Cooling water line 1
    MF660064 Gasket, Cooling water line 2

    Miscellaneous
    MD319539 Gasket, thermostat case 2
    MD165017 Gasket, cooling water outlet hose fitting 1
    MD147332 O-ring, cooling water line 1
    MD161392 Joint, engine cylinder block 1

    Exhaust Stuff
    MD168266 Gasket, T/C exhaust inlet 2
    MD077551 Seal ring, T/C exhaust inlet 2
    MD168267 Gasket, T/C exhaust outlet 2
    MD132930 Nuts 5
    MD132933 Washer 1

    Other Exhuast
    MD165879 Nuts, manifold 14
    MD168979 Lock washer, manifold 14
    MD000436 Flat washer, manifold 14
    MB687002 Exhaust gasket, front pre-cat/DP 1
    MB687015 Exhaust gasket, rear pre-cat/DP 1
    MB687002 Exhaust gasket, DP/main cat 1
    2010 Toyota Camry SE
    1998 Honda Accord EX
    --------------------------
    2005 Jeep Grand Cherokee Limited 5.7L Hemi - Sold (Good riddance!)
    2007 Mazda CX-9 Grand Touring - Sold
    2001 Ford Explorer - AWD 5.0L V8 lifted w/ 32" BFG AT K/O's - Sold
    2004 Mazda6s - Sold
    1994 Stealth RT/TT Pearl Yellow - Sold
    1993 Stealth ES Twin Turbo - Sold
    1981 Audi 4000 4E "The Tank" - R.I.P.
    1984 Toyota Corolla Hatchback - Sold

  2. #2
    1st ever COTM and COTY verified Feedback Score 9 (100%) green-lantern's Avatar
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    I'll put this in the TT conversion link thread.

    Quote Originally Posted by HilbillyHomeboy View Post
    I bet she smells of old mustard and sawdust.
    Jeremy

  3. #3
    1st ever COTM and COTY verified Feedback Score 9 (100%) green-lantern's Avatar
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    http://www.3sgto.org/f19/tt-conversi...hread-292.html

    I put it under parts list. Thanks for the info, if you don't want it in there let me know.

  4. #4
    Large Member Feedback Score 0 SilverBullet's Avatar
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    Wherever you want to put it, it's fine with me. It looks like there is already a link to the list I have on 3SX, but I figured I'd post it here as well in case the link ever goes dead.

    (FYI, I just posted another how-to thread on auto to manual conversion, if you want to move that, too)

  5. #5
    1st ever COTM and COTY verified Feedback Score 9 (100%) green-lantern's Avatar
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    Quote Originally Posted by SilverBullet View Post
    Wherever you want to put it, it's fine with me. It looks like there is already a link to the list I have on 3SX, but I figured I'd post it here as well in case the link ever goes dead.

    (FYI, I just posted another how-to thread on auto to manual conversion, if you want to move that, too)
    I guess I overlooked it. I wondered if I had it in there already through 3sx but I didn't see it.

    Yeah I'll put that in there also. The thread has became useful info thread instead of just TT conversion stuff.

  6. #6
    Now with more poop-smear Not Verified Feedback Score 8 (100%) IPD's Avatar
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    thanks for the parts list! do you have a list of all mods that need to be done for this? (cutting for fitting the smics, etc)

  7. #7
    Large Member Feedback Score 0 SilverBullet's Avatar
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    You're welcome! I never did complete a write-up start to finish. I might be able to come up with one from memory, but it's been soooo long I'd be afraid I'd miss something.

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