Hi all, glad to be a member of this forum. I hope to gain a lot of knowledge from these boards.

 

I currently own a 2001 Subaru Legacy/Liberty rx 2.5, and want to drop a turbo in (essentially making it a b4, i guess). I was just wondering if anyone here has done this, or knows how to do this. or better yet, the best way to do this? Some have said go with the b4 engine while others have suggested half-cuts. I really would like to hear from someone who has done this.

 

I want to cover all bases so i don't fu-ck it up. So any info would be appreciated.

 

Thanks

I would reckon that your 2.5 engine is the "old" design with the 75mm stroke and huge bore - 105mm?. The head gaskets are stressed enough already, turbocharging that engine will lead to problems.

 

The new 2.5 engines have 79mm stroke and bore just under 100mm. Room for forced induction...

 

 

I think your best bet would be to swap in a used 2.0 litre turbo, or perhaps spend some serious money a new 2.5 turbo?