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2G Spyder AWD swap

Posted by brettsvn, Apr 8, 2020

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  1. brettsvn

    brettsvn Probationary Member

    25
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    Joined May 22, 2008
    Victorville, California
    So I’ve decided to take on the Spyder AWD swap and have read a bunch of swaps and started thinking to myself, “there must be a better way to deal with the subframe studs that need to be swapped in order to make the subframes bolt up’”. Every thread that I’ve seen cuts into the frame to add the factory GSX subframe bolts. I didn’t really want to cut into the frame unless absolutely necessary so my question is, why hasn’t there ever been a custom bushing made that has a threaded ID that reaches up to the shorter factory bolts? I know it must be possible so I ended up writing Volk to ask them if they can fab something up. They almost already make it with their solid subframe bushings it would just have to be threaded with a hex to tighten on the lower bushing. Figured I’d ask if anyone has ever attempted this or any insight to why it wouldn’t work if so.
     

    Street Build 199  3

    1999 Mitsubishi Eclipse Spyder N/T
    automatic · 2G DSM
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  2. jed344

    jed344 Supporting VIP

    666
    70
    Joined Jan 10, 2008
    Waterville, Iowa
    I have always seen it done the way you have. Myself and a buddy swapped his GST to a awd and did it it that way without issue.
     

    1K  26

    1997 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM
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  3. jinscho

    jinscho Proven Member

    428
    209
    Joined Jun 16, 2017
    Bangor, Pennsylvania
    The cutting is what’s stopping me from doing the swap on my Spyder... I’m very interested in what you hear back from Volk. I’d much rather spend some money on some additional parts, rather than cutting the x brace and body to gain access to two bolts.
     

    Street Build 2K  12

    1999 Mitsubishi Eclipse Spyder N/T
    fwd · manual · 2G DSM
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    ThunderChild likes this.
  4. brettsvn

    brettsvn Probationary Member

    25
    8
    Joined May 22, 2008
    Victorville, California
    When you say did it “that way” are you saying you did it by cutting into the frame and replacing the studs?
     

    Street Build 199  3

    1999 Mitsubishi Eclipse Spyder N/T
    automatic · 2G DSM
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  5. brettsvn

    brettsvn Probationary Member

    25
    8
    Joined May 22, 2008
    Victorville, California
    I’ll for sure keep you in the loop if they agree to do so. I’m sure the more people who want them, the more inclined they’d be to make them!
     

    Street Build 199  3

    1999 Mitsubishi Eclipse Spyder N/T
    automatic · 2G DSM
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  6. miguelmcv

    miguelmcv Supporting Member

    2,264
    139
    Joined May 3, 2009
    Fresno, California
    That’s a good idea and hope he can customs build something.
    That way it will be so freaking easy to do the swap.
     

    Street Build 465  1

    1997 Eagle Talon TSi AWD
    awd · automatic · 2G DSM

    2K  0

    1995 Mitsubishi Eclipse GST
    manual · 2G DSM
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  7. jinscho

    jinscho Proven Member

    428
    209
    Joined Jun 16, 2017
    Bangor, Pennsylvania
    If cutting weren't involved, I could see a very significant uptick in the amount of AWD swaps done across the board.. not just for Spyder owners.

    ... Just saying
     

    Street Build 2K  12

    1999 Mitsubishi Eclipse Spyder N/T
    fwd · manual · 2G DSM
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  8. brettsvn

    brettsvn Probationary Member

    25
    8
    Joined May 22, 2008
    Victorville, California
    Yeah, I’ve decided it’s definitely possible so if they aren’t interested in doing it, I’m going to convince one of the guys here at my works machine shop to make me a set to try out. We are aircraft oriented but I’m sure I convince someone to make them. Haha
     

    Street Build 199  3

    1999 Mitsubishi Eclipse Spyder N/T
    automatic · 2G DSM
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  9. miguelmcv

    miguelmcv Supporting Member

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    139
    Joined May 3, 2009
    Fresno, California
    The problem is the support needed at the end of the awd frame which is located way in front compare to the fwd which it will end up at the middle of the awd frame..
     

    Street Build 465  1

    1997 Eagle Talon TSi AWD
    awd · automatic · 2G DSM

    2K  0

    1995 Mitsubishi Eclipse GST
    manual · 2G DSM
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    spyderdrifter and Doubleot like this.
  10. brettsvn

    brettsvn Probationary Member

    25
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    Joined May 22, 2008
    Victorville, California
    If I understand what you’re saying correctly, you’re talking about on the bottom of the subframe? Because all mounts are the same position correct? If they are, my idea should work. It would essentially make the subframe and the frame one piece still providing the needed stretch on the bolt. I just talked to my machine shop guys here at work and said it would be super easy for them to make so I’m going to try it out none the less and see what happens
     

    Street Build 199  3

    1999 Mitsubishi Eclipse Spyder N/T
    automatic · 2G DSM
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  11. Doubleot

    Doubleot Proven Member

    1,166
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    Joined Mar 15, 2009
    Spanish Fork, Utah
    The subframe from fwd to awd are completely different. What the post above meant was the awd subframe is longer so the OEM mounting location is neccessary because of the length of the subframe. If you used the forward most mounting points of the fwd subframe you'd probably be in the middle of the awd subframe.

    I've done this swap, cutting the x-brace is no big deal, I had my friend tig it back together and it is just as sturdy if not more sturdy then before.
     

    Street Build 3K  4

    1998 Mitsubishi Eclipse Spyder GST
    279.1 whp · 325.3 lb/ft · 2G DSM
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  12. brettsvn

    brettsvn Probationary Member

    25
    8
    Joined May 22, 2008
    Victorville, California
    Son of a bee sting. I thought the only reason was to drop the longer bolt from the same location. With that being said, it will make it a bit easier but you’d still have to go I. From the top for the FWD location... gotcha! Well... we shall see how it comes out and if I can come up with something for the front. Probably still have to cut in from the top... ‍♂️
     

    Street Build 199  3

    1999 Mitsubishi Eclipse Spyder N/T
    automatic · 2G DSM
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  13. brettsvn

    brettsvn Probationary Member

    25
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    Joined May 22, 2008
    Victorville, California
    Gotcha.. with that being said, is it the same for the front subframe or do those share the same bolt locations?
     

    Street Build 199  3

    1999 Mitsubishi Eclipse Spyder N/T
    automatic · 2G DSM
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  14. miguelmcv

    miguelmcv Supporting Member

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    Joined May 3, 2009
    Fresno, California
    The only way to do it without opening the hole from the inside is, to weld a bolt from the bottom but the head bolt needs to be inserted into the hole so it can be flash at the outside surface where the subframe meats.

    No one has done it that way (at least I haven’t heard of), you have to be well on welding to make sure you are doing a well reinforced job.
     

    Street Build 465  1

    1997 Eagle Talon TSi AWD
    awd · automatic · 2G DSM

    2K  0

    1995 Mitsubishi Eclipse GST
    manual · 2G DSM
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    Doubleot likes this.
  15. Doubleot

    Doubleot Proven Member

    1,166
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    Spanish Fork, Utah
    The front subframe doesn't need to be changed at all. Im guessing your car is a 2g turbo model, all 2g turbo models share the same front subframe only the rear subframe and drivetrain differ from awd to fwd as well as exhaust systems.
     

    Street Build 3K  4

    1998 Mitsubishi Eclipse Spyder GST
    279.1 whp · 325.3 lb/ft · 2G DSM
    Loading...
  16. brettsvn

    brettsvn Probationary Member

    25
    8
    Joined May 22, 2008
    Victorville, California
    I have a GS spyder it will be going into so non turbo. But reading back on it I can’t find anything on the front subframe... I must be smoking something. I could have swore I saw something about using the back subframe bolts on the front subframe and swapping them but I guess I was wrong about that!
     

    Street Build 199  3

    1999 Mitsubishi Eclipse Spyder N/T
    automatic · 2G DSM
    Loading...
  17. Doubleot

    Doubleot Proven Member

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    Joined Mar 15, 2009
    Spanish Fork, Utah

    I've never heard of someone swapping a non turbo spyder to AWD. I'm not sure any of the write ups on here will be useful in that case. Good luck.
     

    Street Build 3K  4

    1998 Mitsubishi Eclipse Spyder GST
    279.1 whp · 325.3 lb/ft · 2G DSM
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  18. miguelmcv

    miguelmcv Supporting Member

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    Joined May 3, 2009
    Fresno, California
    GS is same as turbo subframe.
    They all have the 4g6X engine, the 420 are the only one they use different subframe.
     

    Street Build 465  1

    1997 Eagle Talon TSi AWD
    awd · automatic · 2G DSM

    2K  0

    1995 Mitsubishi Eclipse GST
    manual · 2G DSM
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    spyderdrifter likes this.
  19. Doubleot

    Doubleot Proven Member

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    Spanish Fork, Utah
    My question is will an awd transmission mate to a 4g64 the same as it does a 4g63?
     

    Street Build 3K  4

    1998 Mitsubishi Eclipse Spyder GST
    279.1 whp · 325.3 lb/ft · 2G DSM
    Loading...
  20. miguelmcv

    miguelmcv Supporting Member

    2,264
    139
    Joined May 3, 2009
    Fresno, California
    Yes it does.
    All what you need to make it simple is, get the turbo harness and you will be good.

    Only thing is, because you are not tubo from factory, you need extra stuff, like intake air filter system, boost controller, etc, etc.
     

    Street Build 465  1

    1997 Eagle Talon TSi AWD
    awd · automatic · 2G DSM

    2K  0

    1995 Mitsubishi Eclipse GST
    manual · 2G DSM
    Loading...
    Hickory-NC-2Ggsx likes this.
  21. jinscho

    jinscho Proven Member

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    Joined Jun 16, 2017
    Bangor, Pennsylvania
    If you're thinking about AWD swapping a non-turbo 4G64, save your money. The SOHC 4G64 doesn't produce enough power to make the AWD swap worth it. If anything, you'd probably make the car slower with the loss of HP due to the increased drivetrain load.

    Now, if you're planning on turboing the 4G64 and THEN doing the AWD swap, that's another story..
     

    Street Build 2K  12

    1999 Mitsubishi Eclipse Spyder N/T
    fwd · manual · 2G DSM
    Loading...
  22. miguelmcv

    miguelmcv Supporting Member

    2,264
    139
    Joined May 3, 2009
    Fresno, California
    2 on JINSCHO’s post
     

    Street Build 465  1

    1997 Eagle Talon TSi AWD
    awd · automatic · 2G DSM

    2K  0

    1995 Mitsubishi Eclipse GST
    manual · 2G DSM
    Loading...
  23. brettsvn

    brettsvn Probationary Member

    25
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    Joined May 22, 2008
    Victorville, California
    Hahah, oh no, I wouldn’t do that to a stock 4g64. I have my choice of a 6 bolt 4g63, a 7 bolt 4g63 and I’ve been recently debating going with the 4g64 bottom 7 bolt 4g63 head (the head is fully built and just about done with GSC S2, port and polish, bee hives, kiggly HLA, etc etc.). I’m also going the HX40 route so I’m more so worried about everything holding up to the power at this point.
     

    Street Build 199  3

    1999 Mitsubishi Eclipse Spyder N/T
    automatic · 2G DSM
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  24. miguelmcv

    miguelmcv Supporting Member

    2,264
    139
    Joined May 3, 2009
    Fresno, California
    If you are planing to go with an HX40, I would suggest to do the 4g64 long rod set up, for a street car it would have a nice spool.
     

    Street Build 465  1

    1997 Eagle Talon TSi AWD
    awd · automatic · 2G DSM

    2K  0

    1995 Mitsubishi Eclipse GST
    manual · 2G DSM
    Loading...
  25. brettsvn

    brettsvn Probationary Member

    25
    8
    Joined May 22, 2008
    Victorville, California
    That’s definitely a possibility. I’m just worried about the trans and diff. I know the 2.4 setups are much more torquey and can brake those more easily than the 2.0 setups. I was reading Jacks Transmission thread on the 7 bolt with the big rod setup machined down for tighter tolerance, but started thinking of using those with the 64 crank in the 63 block... idk, I’m going to talk to my machine shop and see which way to go. Or any input from anyone running that setup is welcome too
     

    Street Build 199  3

    1999 Mitsubishi Eclipse Spyder N/T
    automatic · 2G DSM
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