Any Issue Rebuilding With an '04 STi Crank & Rods in an '04 WRX? - Page 2 - Subaru WRX Forum
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#16 Old 02-24-2014, 02:37 PM
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You're better off with a stock rebuild/replace. Much easier to explain when you inevitably sell the car too.
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04 STi 16G powered lagless fun
04 WRX: SOLD
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#17 Old 03-07-2014, 10:45 AM
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In a stroke of good fortune I was given a spare EJ205 shortblock in good condition which had 140,000 km on it. It's condition was verified by a reputable builder, so it seems like a good place to start.

With a spare EJ205 shortblock I can get started early on my rebuild. If I can find rebuilt heads where I'll get credit for the old cores, I might be able to have a longblock built before I pull the old engine out, making an engine swap potentially a weekend operation.

This would be great!


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Meet the turbocharged rally-bred Subaru WRX.
blue '09 STi - lease return
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#18 Old 03-13-2014, 02:25 PM
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Looks like this build work is going to be coordinated by Touge Tuning, likely in the fall.

1. Rebuild the spare EJ205 shortblock in advance
- Gates OEM Water Pump & Timing Belt Kit - 2004-2005 Subaru WRX
- 4032 alloy forged pistons
- OEM or equivalent bearings
- OEM head gasket
- 10 mm OEM oil pump
- ARP head studs

2. When shortblock ready, yank the engine and deliver the heads.

3. Cylinder head service (1 – 2 day turnaround)
- Basic head service that is done is cleaning, pressure testing and decking the heads, plus re-shim valves/cams, valve seats redone, parts replaced as required

4. Pick up longblock when heads ready and assembled
- Likely in a GTI with the rear seats folded forward to make a deck

5. Reassemble the engine on an engine stand in Orillia and then re-install in the WRX.



Always good to have a plan ready just in case of an unexpected failure, and a fall build timeline allows an interim Stage 1 tune to participate in this year's performance motoring season. This is good!

Laszlo - blue '04 WRX
Meet the turbocharged rally-bred Subaru WRX.
blue '09 STi - lease return
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