93 Galant 2.0 4g63 Sohc NT to 4G63T swap

[mitsutuner93]

Here's the story. I've had a few eclipses and a galant back in the day. I've currently got an RX-7 turbo (which I love, but 2 turbo cars are more fun than one ). I sold off all my eclipses and my lightly modded galant. My brother bought my galant and proceed to f*** it up in the year he's owned it. The car was in primo condition when I sold it to him. Now it knocks, pings, leaks coolant, oil, and only starts when it feels like it. I had put in whiteline front/rear strut bars, kyb agx struts, and intrax lowering springs, a custom 2.5" exhaust and made my own intake. Put on 205/50ZR16 tires w/ 5 spoke aluminum rims. He's basically giving it back to me because he can't afford to fix it. I've got some questions and plans and hoping you guys/gals could can provide me with some advice.

I want to junk the sohc engine (its mostly toast anyways) and get a used jdm 4g63t and use my eclipse fwd trans to swap in. I assume it can be done seeing as the galant was offered as a vr4 in 91-92. I've got a junk 91 turbo eclipse w/ a blown engine as well.

-Will the american fwd tranny from the eclipse bolt up to a jdm 4g63t?

-Will I need a jdm ecu or will my 91 eclispe junker ecu run a jdm 4g63t?

-Can I swap the 5 lug hubs and brakes off the eclipse to the galant? (my galant has rear drums, the eclipse has discs, and a bigger master cylinder)

-Will the intercooler from the eclipse fit somewhere in the galant or will I have to grab an fmic?

-Galant fuel pump need to upgraded? (I dunno if the eclispe one is the same)

-Can it be done for less than $2500?
(I've seen most used jdm 4g63t's go for about 1100. The trans in the eclipse is good, needs an act 2100 or 2600 clutch. The ecu was good, and so was the running gear hubs, brakes, cylinders, and other misc parts I might need off it.

Thanks for any info you can provide!

 

[fivestardsm]

I'm doing the same swap here in a month or 2 inj my 91, and I have been doing searchs and asking questions about the whole wiring harness and ecu swap but I don't know until I actually tear into it. As for the trannies though, yes they will bolt to the JDM.For the conversion for the 4 lug to the 5 lug disk brake's, I have done the swap on my other 90 Galant, but I'm not sure on the 93. Refresh my memory, when did they do the body style change, was it 92 or 93?
Anyway, for the swap on mine i just replaced the entire rear axle assembly, It bolted right in. And for the front, I just put the spindles off of one of my Laser's(with the brakes) on in place of the stock 4 bolt's.
Hope this helps, check the year diff thoughg and keep me posted, also let me know what you find out about the wiring harness and ecu.

EDIT: I forgot to say, I'm not sure about the fuel pump upgrade or the intercooler, im just gonna build my own out of a couple extra side mounts that I have and do a front mount. I would call a parts store about the fuel pump and get the part #'s for both the eclipse and the galant to see if they are the same.

Steve.

 

[mitsutuner93]

93 Was a transition year, it was the older body style with a different 'experimental' engine accord to mitsu. It was totally redesigned for 94. Mine is a 93.

 

[TajMan]

Bringing up an old thread...

My brother's '93 Galant (automatic) is starting to have tranny issues and I'd love to swap in a 4G63T 5-speed combo from a FWD turbo DSM. If I used the DSM tranny would I need the DSM axles and hubs too, or galant manual tranny axles? How bad is the wiring involved? Do you need to pull the dash and wire up the entire DSM wiring harness and ECU?

I love mitsu's by the way I used to have a '90 GSX and a '92 Stealth R/T, and I still have a '94 3000GT (doing a tranny swap on that right now too).

 

[TajMan]

How much does a used 1G engine/tranny/turbo/harness/ecu cost anyway?

 

[theslab]

Anyone ever get around to doing the swap? I have a 93 tsi awd and i wanted to put the motor and awd shit into my 93 galant with a 4g64 sohc.

 

[95'GSX]

Anybody successfully complete this swap? I have a 1992 Galant GS that I just pulled the non turbo 4g63 out of and have a 93 Talon TSi as my donor car. This is one of the years they had the GVR4 and the non turbo was a DOHC so they are quite similar, making for a not so difficult swap. I've read a lot and have big plans for this thing but any hints/tips would be appreciated. Thanks all.

 

[Boostinsideways]

I did the swap in Galant GSX. It was rather straight forward.

I used the wiring harness from a 1991 eagle talon TSI AWD.
I used a turbo 6 bolt engine from the same car.
I used the stock Galanty Tranny and Transfer box.
I used a socketed eprom ecu that I purchased from a local DSM forum.

Its really a straight forward swap aside from wiring the Knock sensor. You do need to use a turbo ecu.

 

[95'GSX]

I'm using the 7 bolt from my 93 and using the wiring harness from that as well as buying a MT 1g ecu to work with. And it's going into just a GS and staying fwd. Did you run into the infamous front motor mount problem or is this just a myth I keep randomly seeing? I have the nt block and all the mounts in the car. I was going to do new inserts all the way around but now I'm not sure if I need that front bracket. Thank you for your help again.

 

[Boostinsideways]

I am sorry but the front motor mount? Its just a roll stop IIRC. I don't remember any issues with it but myself and my friends have done a number of swaps.

 

[95'GSX]

Yes there is a motor mount. Here is said mount on the GS's cross member

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Here's the mount on the NT Block

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And here is the motor mount from the Talon

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I read that they have different angles, but I would think if i took the mount attached to the NT block and threw it on the turbo block it would bolt up. Maybe your right and I can just drop it right in. Thank you again for your help.

PhotoFail

Here's the links in order.

92 Galant GS :: DSC02346.jpg picture by smallz311 - Photobucket

92 Galant GS :: DSC02346.jpg picture by smallz311 - Photobucket

92 Galant GS :: DSC02346.jpg picture by smallz311 - Photobucket

 

[justin_cosgrove]

SOHC Auto to DOHC manual conversion Page 3 | Galant VR-4 > Newbies | GalantVR-4.org Mitsubishi Galant VR4 Forum

Here is my build thread complete start to finish sohc auto to dohc manual and everything you would have to worry about.
There is also a link on the first page to someone elses sohc to dohc conversion.

It is however imposible to convert a e33a e35a fwd chassis to 4wd as the rear floor section is different between the 2wd and 4wd. The only way would be to completely modify the rear floor section. Or start with a e38a or e39a chassis

 

[Boostinsideways]

Unless the one rollstop bracket is shorter, I don't see it being an issue. I don't recall having any issues to get them lined up but that was in a Galant GSX which allready had a n/t 4g63 in it. We just swapped a rebuilt turbo 4g63 straight in, ran the wiring harness. which was the hardest part really.

The car was sold within 3 weeks. Not sure how the stock tranny held the extra torque/power.

Unless the one rollstop bracket is shorter, I don't see it being an issue. I don't recall having any issues to get them lined up but that was in a Galant GSX which allready had a n/t 4g63 in it. We just swapped a rebuilt turbo 4g63 straight in, ran the wiring harness. which was the hardest part really.

The car was sold within 3 weeks. Not sure how the stock tranny held the extra torque/power.

 

[95'GSX]

Sorry for the confusion. I'll start over. I have a 1992 Mitsubishi Galant GS. This car is fwd manual, NT DOHC 4g63. I want to swap my DOHC 4g63t from my 1993 Eagle Talon TSi donor car I have recently purchased. This is going to stay fwd and I am going to use a fwd 1g DSM transmission. I was going to go manual because the Talon currently has an automatic transmission, but I am now debating just leaving the automatic transmission. I guess once the motor is out of the Talon I will just compare all the mounts, more or less, side by side. Thank you guys for the input but it seems as though nobody has really gone this route. It's either a NT 1g going to a Turbo 1g or a Galant GSX to a Galant VR4. But I would be happy to be the guinea pig for this one.

 

[Boostinsideways]

The pics you posted looks like you could either just the mount that is the car now, or either.

Those roll stops use bolts that are much skinnier than the actual bolt holes. The roll stops are just there for between shifts and launching. They keep the engine from pitching forward/backward. You do need them, so don't by anymeans leave them un bolted. But alingment should be a non issue unless in this one case the block casting is different and has a different attachment point for the front roll stop bracket.

 

[95'GSX]

^^ This. Thank you for your help. I will be attempting this in the next few weeks and confirm the issue/non issue when I do so.

 

[justin_cosgrove]

"it seems as though nobody has really gone this route" Heaps of people have gone this route, your only problem would be traction but that's part of the fun. It's going to be much easier for you than it was for me going auto sohc to dohc manual. I can't answer your question about the trans fitting but I do know you might have clutch issues and you might need to upgrade, as soon as you hit boost it will probably slip if using the standard NA clutch. The turbo bell housing is bigger so you can't just swipe a clutch from one of them.

You will also need to upgrade the fuel system as the N/A pump won't be able to supply enough fuel.

Have you thought of just adding the needed wires to your harness instead of changing it? could actualy prove easier. Not sure if a DSM harness will fit the galant, if it was a harness from a VR4 then I would say no problems. If you remove the glove compartement then there is a junction where the harness unplugs so no need to remove the dash or anything, unless you have aircon as there is an annoying 10mm bolt up under the dash that holds the harness there, the aircon hides that.

I can't remember all your questions, dam dial up! it would take me 10 minuts to go back and re read the thread.

Do you have the turbo afm etc?

Here's a 6g galant dohc that's been converted to turbo Galant VR4 Australia • View topic - EOI: 1990 Galant GSR Turbo if you search the site there is some info on people whom have done the conversion.

 

[95'GSX]

I guess my 'to clarify' post wasn't as clarifying as I hoped it would be. I bought this 1g Talon for the purpose of a donor car. It is running and driving and cost me $600. I am going to use the motor, fuel tank, wiring harness, possibly dash, and other engine bay components from the Talon. It has an automatic transmission and I was planning in buying a 1g fwd (turbo model) manual transmissim, as the Galant was previously manual and has the whole assembly there for me. I am now debating just taking the trans with the motor from the Talon. I can go either way ecu wise cause I have the auto already and a 1g manual trans ecu is easy to find around here. But with buying the parts for the manual trans I almost feel like just saving that money and keeping the auto trans for continuous boost and more traction through the gears. This will also free up funds for upgrades once the engine is actually in the Galant.

 

[Boostinsideways]

I just used the 1g DSM Engine bay harness. It was much easier to clip the pig tails for the headlights and wire them into the DSM harness than it was to trace the harness back to the ecu and add pins for the knock sensor. I am unsure what else is physically different between the harness as we just tossed them in the scrap pile when finished.

The thing is here, 1g dsms are a dime a dozen. You can find one on nearly any scrap yard, generally the engines are gone, but they rarely take the ecu/harness. The only hard part is finding a good turbo bottom end. Anything else can be picked up on the internet.

I honestly don't know a single person that has done a sohc or n/t galant swap. Galant GSX seem to be common enough. I see 1-2 each year for sale. So nearly as common as a vr4.

Mirages are more popular because you can dress them out as an evo.

Colts are more popular because its easier to convert to AWD, and they are stupid light.

I would recommend the auto. The auto trans is more durable, and you can get a shift box that will make it just as fun to drive. Shift box + Line Pressure mod + Auto = win. I would absolutely kill to find a 2gb awd talon.

Or at the very least a 1g donor car awd + auto so I could setup an Auto AWD mirage.

 

[95'GSX]

I found a link on how to make a shift box for $10-$15 This sounds like far too much fun. You have been a great help.

Ps my friend has a 90 mirage hatch and has a 4g63t waiting to go into it. (he has all the parts necessary) although is he going manual and just has an se, as opposed to the colt gt which was turbo all wheel drive. He's looking for an awd shell and wants to rally it. We love our projects. I hope my saving money and driving an auto will allow me to get enough power to woap that light mother f*ckers ass