2004 STi engine swap --- need suggestions
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Joined: Sep 2012
Posts: 15
From: La Mirada, CA (SoCal)
Car Info: 2004 STI
2004 STi engine swap --- need suggestions
Long story short, bought a 2004 STi w/ 75k miles, blew a headgasket only 300miles after I owned it. The engine was overheating and ended up warping the block to the point where a piece of paper could fit underneath the straight edge.
So I am dropping in a new shortblock fresh from Subaru w/ 1year warranty, all new engine gaskets, valve job, copperspray gaskets, ARP head studs, decking heads.
The only other surprises I found are that I have what looks like Perrin front shifter brushings, and the infamous crack in the VF39 turbo's exhaust manifold.
I already have a new set of Kartboy front and rear shifter brushings, is it worth swaping out the old Perrin and putting in the new Kartboys? I am going to put in the rear one regardless.

So I am dropping in a new shortblock fresh from Subaru w/ 1year warranty, all new engine gaskets, valve job, copperspray gaskets, ARP head studs, decking heads.
The only other surprises I found are that I have what looks like Perrin front shifter brushings, and the infamous crack in the VF39 turbo's exhaust manifold.
I already have a new set of Kartboy front and rear shifter brushings, is it worth swaping out the old Perrin and putting in the new Kartboys? I am going to put in the rear one regardless.

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From: Bay Area 925
Car Info: 2018 Tacoma TRD PRO
pretty intresting color. and headlights....
shouldnt buy from subaru. Your going to pay lots of $ for pretty mich an OE block when you could use the same amount and pick up a better quality block at a Shop. Eq for ex.
shouldnt buy from subaru. Your going to pay lots of $ for pretty mich an OE block when you could use the same amount and pick up a better quality block at a Shop. Eq for ex.
Thread Starter
Registered User
Joined: Sep 2012
Posts: 15
From: La Mirada, CA (SoCal)
Car Info: 2004 STI
yeah i am going to repaint it the original color black, and I needed new headlights as the car was a salvage title and I needed to pass the brake and light inspection. These lights work well, kinda tacky, but they are growing on me. I will eventually replace them with some nice retrofits when I recover from this engine crisis.
Thread Starter
Registered User
Joined: Sep 2012
Posts: 15
From: La Mirada, CA (SoCal)
Car Info: 2004 STI
The shortblock was 2grand even. After shipping, it would have cost $1930 for a new shortblock from a tuning company (lowest i could find online at least, and i don't want something that is just going to be faulty again).
Nobody likes the tuna here
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From: Somewhere San Mateo County, Inside A 911 Ambulance
Car Info: 03 SRP WRX Street Class Prepped, 17 Chevy Duramax
Well knowing the stuff subaru uses now.... I have a hard time trusting the pistons and ringlands from them. Are you doing the full install yourself?
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From: Livermore, CA
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You should have looked into finding a used longblock, and having a shop do a tear down and rebuild using much higher quality parts. Would have been cheaper, and much more reliable... And it would make mo powaaa!
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