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Old 04-18-2012, 02:03 AM   #1
ffrawdbacon
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Default Evo 4g63 swap subaru sti???

Has anyone heard of this swap ever being done before?

I know it's wrong to do to a Subaru since the flat four is the heart of it all. But I'm a big power freak and I'm all sure we know that the 4g63 can handle and make more power then any EJ can. But I feel the STI looks WAY better then any Evo out there. So it's a toss up.

I have a 04 Sti that had a blown engine. And like I said before I'm a power freak so I started building the engine to handle big power. I'm just near the end of my build. Tying up loose ends. But I'm afraid I'm not going to make the power I want to. I'm shooting for 625whp. But that power for a built 4g63 is nothing. So I started to think if there was a swap out there that I would consider doing it. So I thought I would past and see if anyone has heard of anything like this.

Thanks Guys.
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Old 04-18-2012, 02:26 AM   #2
cmk82600
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Major PIA to do. Yoir would need to change the tranny and countless other things too. Not to mention getting flamed by every Subaru owner for the rest of your life.
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Old 04-18-2012, 02:37 AM   #3
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I'm just brain storming, but the 4runner in me says... turn it 90 degrees, build a plate to match the 6MT, oil pan modifications??, and finish. Doesn't seem as far fetched as an LS1...
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Old 04-18-2012, 02:53 AM   #4
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Quote:
Originally Posted by guidojuicehead
I'm just brain storming, but the 4runner in me says... turn it 90 degrees, build a plate to match the 6MT, oil pan modifications??, and finish. Doesn't seem as far fetched as an LS1...
There won't be room for an inline engine onto a Subaru drivetrain. Four inline cylinders is going to be a lot longer than two in boxer layout.
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Old 04-18-2012, 05:21 AM   #5
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Quote:
Originally Posted by liv4psi

There won't be room for an inline engine onto a Subaru drivetrain. Four inline cylinders is going to be a lot longer than two in boxer layout.
If OP wants to go that far then lengthening the front wouldn't be a big deal.
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Old 04-18-2012, 05:29 AM   #6
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Quote:
Originally Posted by liv4psi

There won't be room for an inline engine onto a Subaru drivetrain. Four inline cylinders is going to be a lot longer than two in boxer layout.
If OP wants to go that far then lengthening the front wouldn't be a big deal.
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Old 04-18-2012, 06:58 AM   #7
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Quote:
Originally Posted by liv4psi View Post
There won't be room for an inline engine onto a Subaru drivetrain. Four inline cylinders is going to be a lot longer than two in boxer layout.
Thats not the problem.. LS1 swaps have and do occur in WRXS now. The problem would be a height issue possibly. But it would definitely have to be RWD I would think
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Old 04-18-2012, 07:49 AM   #8
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Wouldn't it be easier to start your own car company, a la DeLorian?

You might, might, be able to take over the SAAB manufacturing facilities.

There is a true shortage of 625whp daily drivers that get 40+ mpg. I'd shoot for that if I were you, with the gull wing doors!
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Old 04-18-2012, 08:39 AM   #9
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If you do your build right, that HP number wouldn't be hard to get.

As far as turning the motor 90 degrees, how the hell do you expect to mate it up to a transmission? I understand this is how the EVO operates, but you'll be looking at 10-20K in fab alone to own an EVO with a Subaru body. For the money you can build a beast.
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Old 04-18-2012, 10:16 AM   #10
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Quote:
Originally Posted by cmk82600
Major PIA to do. Yoir would need to change the tranny and countless other things too. Not to mention getting flamed by every Subaru owner for the rest of your life.
Massive pain, but the 4G63 is a beast. I built my VIII to 400 whp with ease. It was insanely reliable. I do miss that motor. If you're up for the task, I say do it. You'll be able to outrun any criticism from other members. :-)
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Old 04-18-2012, 10:42 AM   #11
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While I have to say that the boxer is the heart of it all, I'd be interested to see how this goes.

Next stop, 4g63 with UEL headers.
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Old 04-18-2012, 10:45 AM   #12
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get an evo, or any other car that can easily hold a 4g63
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Old 04-18-2012, 12:03 PM   #13
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This is stupit
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Old 04-18-2012, 12:13 PM   #14
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Quote:
Originally Posted by Dat8687

Thats not the problem.. LS1 swaps have and do occur in WRXS now. The problem would be a height issue possibly. But it would definitely have to be RWD I would think
The LS1 wasn't mated to a Subaru drivetrain. Read my post. It was in reply to Guidojuicehead's over simplification of flipping it longitudinal and building a 6MT adapter plate.
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Old 04-18-2012, 12:25 PM   #15
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I thought about doing this, but instead I put a 4G63 at each wheel. Now I've got 4EWD, or 4 engine wheel drive, all JDM and carbon fiber too.
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Old 04-18-2012, 12:31 PM   #16
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The ej can make just as much power as a 4g63 but it costs more to get the ej to say 600 as is does to get the 4g63 to that amount.
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Old 04-18-2012, 01:59 PM   #17
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y not use a mighty max trans its a rwd 4g63 trans
ive seen sr and rb swaps into sti's would have to be rwd though
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Old 04-18-2012, 02:06 PM   #18
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Why haven't I seen a smart car with an LS9? Oh yea, because its a dumb idea.
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Old 04-18-2012, 02:17 PM   #19
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Quote:
Originally Posted by DKDunn04 View Post
Why haven't I seen a smart car with an LS9? Oh yea, because its a dumb idea.
Do you feel the same way about dropping a big block into a Gremlin? (I kinda do...)


Or into a motorcycle?

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Old 04-18-2012, 03:10 PM   #20
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Quote:
Originally Posted by CobbsSTI
This is stupit
You mean "stupid? "

Kinda killed your statement there, cupcake.
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Old 04-18-2012, 05:02 PM   #21
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I would recommend buying an Evo. It's not worth being "unique" IMO.
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Old 04-18-2012, 10:18 PM   #22
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probably easier to buy an evo and try to put some sti body parts on it :S

or just continue as you are and build your engine.

-sean
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Old 04-18-2012, 10:20 PM   #23
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Old 04-18-2012, 10:29 PM   #24
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so many other swaps besides a heavy iron block 4 cylinder from 20 years ago. The ls1 swap that another member did on the blue bugeye was awesome. If only he would have adapted it to the sti trans and kept AWD.

Anyways. The flat six swaps using the tribeca 3.5 are pretty cool and bolt up to the sti trans... much easier to do. And you'll have much more torque.

Im sure this is just a dream thread as this will never happen but... who knows maybe you'll hit the lotto and surprise us.
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Old 04-18-2012, 11:35 PM   #25
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It's not a dream thread. I would really like to do it. It's. It like I need me Subaru anyways. It's been sitting for the past three years anyways. I have other toys in the mean time.
I really wanted to hear what everyone had to say weather they agreed or thought its a dumb idea. So from here im going to do a little more research into the 4g's dimension and engine mounts.

Keep the post coming guys.
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