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2.5i to 3.0 swap


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Engine swap means a complete wiring harness swap as well and a lot of stuff, easier to get a complete 3.0 car.

 

Of course - if the interior of the donor 3.0 is eaten by goats or something and the engine and transmission is healthy then it's possible - with a lot of work. I think that I would drop the entire transmission including rear diff and complete wheel suspensions and transplant it to the new car. And of course put a lot of work into transferring the electrical harness.

 

And considering that frank_ster has made a transplant of a Buick engine into a Subie: http://legacygt.com/forums/showthread.php?t=140053&highlight=Buick+Heart

 

Then you need to get it inspected/approved for road use. But it depends on where you live how hard that would be.

 

As a bonus you can of course try to get Brembo brakes and Bilstein shocks, making it a 3.0 Spec B! (Europe had them)

 

Also see this thread: http://legacygt.com/forums/showthread.php/rotrex-power-3-0r-68613.html?t=68613

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my problem is, i live in california... so not only is it impressively hard to find a 3.0r for sale in my area, i’m gonna be losing just about as much on trade in value for my car compared to just swapping it, and then i would be saving on insurance as well. and i drive up to the mountains a lot so my transmission is starting to slip downshifting into 3rd because my car does it so often since it only has 4 f***ing gears and not enough power in 4th to climb a hill
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i’m not trying to find a guide on how to go all out and spend as much money possible. that first link was very helpful, now i’m mainly wondering about the “little things” he mentioned and what’s so bad with the limited 2.5i suspension because ive noticed my rears are shot but i’m in the process of replacing all 4 with kyb.
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my problem is, i live in california... so not only is it impressively hard to find a 3.0r for sale in my area, i’m gonna be losing just about as much on trade in value for my car compared to just swapping it, and then i would be saving on insurance as well. and i drive up to the mountains a lot so my transmission is starting to slip downshifting into 3rd because my car does it so often since it only has 4 f***ing gears and not enough power in 4th to climb a hill

 

If California - good luck getting any swap through an inspection. A swap is going to be more problematic than finding a good replacement car.

 

And in mountains you might be better off with a turbo engine instead.

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There are people that has supercharged the 2.5i, that's probably a better option.

[ame=http://www.youtube.com/watch?v=3bXfswyCHz8]Supercharged Subaru Legacy 2.5i - YouTube[/ame]

 

Mixing the 4EAT with a H6 is probably also going to a world of pain.

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