Newbie Need help/suggestion on engine swap - Subaru WRX Forum
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#1 Old 11-27-2012, 07:40 PM
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Newbie Need help/suggestion on engine swap

Hi, I recently just purchased a 05 outback xt. It needs a new engine or short block, I've been juggling a few ideas and don't know the best way to go. First would a used sti engine fit and what would I be in for? Or should I go with a sti short block and what would be involved in that?
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#2 Old 11-28-2012, 05:50 AM
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What are you going to use the car for? Daily driver? Track? Auto-x ?

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#3 Old 11-28-2012, 07:30 AM
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Just get another EJ255 block. You're looking for extra hassle with no benefit.
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#4 Old 11-28-2012, 12:09 PM
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Mainly daily driver, but still want some power so it can be a bit of a sleeper. I looked ino an ej257 is this the right block?
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#5 Old 11-28-2012, 01:11 PM
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The difference between the EJ257 and EJ255 is the heads. If you just need the short block, doesn't matter much. I think there might be some small difference I can't remember but it's minor. If you need the heads, stick with the EJ255. Your car is drive by cable, the EJ257 heads are drive by wire. The conversion is a ####tacular amount of work.

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#6 Old 11-28-2012, 01:48 PM
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Just orders the EJ257 sb, what are good mods to have done while this thing is apart?
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#7 Old 11-28-2012, 02:36 PM
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This pistons are different in both of those shortblocks as well. 257 has 22cc dished pistons while the 255 has 24cc dished pistons.

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#8 Old 11-28-2012, 02:40 PM
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Quote:
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The difference between the EJ257 and EJ255 is the heads. If you just need the short block, doesn't matter much. I think there might be some small difference I can't remember but it's minor. If you need the heads, stick with the EJ255. Your car is drive by cable, the EJ257 heads are drive by wire. The conversion is a ####tacular amount of work.
EJ255 has different pistons than the EJ257. EJ255s (what he has stock) pistons have smaller dishes. It's not a huge difference. Not sure how it would affect tuning.

EJ255s are DBW as well.
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#9 Old 11-28-2012, 03:03 PM
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EJ255 has different pistons than the EJ257. EJ255s (what he has stock) pistons have smaller dishes. It's not a huge difference. Not sure how it would affect tuning.

EJ255s are DBW as well.

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#10 Old 11-28-2012, 03:50 PM
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You hadn't responded when I hit reply.
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#11 Old 11-28-2012, 04:16 PM
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You hadn't responded when I hit reply.
4 mins. prior...snooze and you lose....

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#12 Old 11-28-2012, 04:43 PM
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Bro, do you even lift?
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#13 Old 11-28-2012, 04:53 PM
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Lift as in weights? Yes for shifting no....lol

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#14 Old 11-28-2012, 09:40 PM
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Looking into putting on new exhaust, found used invidia g200 of a 02 wrx, would this fit the 05 obxt or am I wasting my time?
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#15 Old 11-28-2012, 10:42 PM
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Not even remotely.

Did you cancel your EJ257 order?
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