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Old 12-09-2011, 02:16 PM   #1
efiniluvr
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Default 02 Bugeye 2.0L to 2.5L; what is needed?

Hi everyone,

I'm looking to swap out the 2.0L out of the Bugeye for a replacement. At this point, I'm still undecided on a few of my options. If I choose to go with a 2.5L, what is needed and what can I keep? Secondly, can you purchase a new longblock somewhere? If you have personally purchased a new long block, please provide seller info and pricing.

This is for a daily driver. so I really don't want to play with Sti swaps.
Here is a list of my options:

1)Replace old 2.0L with a low mileage 2.0L longblock
2)Replace old 2.0L with a NEW 2.0L longblock
3)Replace old 2.0L with a low mileage 2.5L longblock
4)Replace old 2.0L with a NEW 2.5L longblock
5)Other options??

Thanks
-Jeff
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Old 12-09-2011, 03:24 PM   #2
wrxlaunch
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Deep pockets?
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Old 12-09-2011, 03:34 PM   #3
efiniluvr
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No deep pockets here, but I do have a set budget. If the price of the options are within 10% of each other, then I'll definitely consider the one with best long term reliability.

Mods: Thanks for moving this thread.
-Jeff
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Old 12-09-2011, 03:42 PM   #4
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Should be able to get a new shortblock for ~$2k. If it were me... I'd get the 2.5, tune and call it a day
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Old 12-09-2011, 04:05 PM   #5
ballitch
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Not me, I would rebuild (or pay to get rebuilt) an EJ22 and throw that it under your stock heads. But of course you haven't told us about potential power levels or goals yet...


~Josh~
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Old 12-09-2011, 04:12 PM   #6
biodude
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state your budget, so there is less guessing
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Old 12-09-2011, 04:41 PM   #7
efiniluvr
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$3500 max. Again, this is for a daily driver, so no hybrids, or Sti swaps (unless they fall within my budget). I prefer a longblock because I've never had any good luck with motors that I've had to put together. Playing with Honda B-Series, it never fails that the headgasket either leaks, or the piston rings weren't gapped correctly (not done by me). I would just prefer to have an assembled longblock (or an entire motor) that is ready for drop in. That's why I asked about longblocks, whether they can be purchased assembled.

At most, I'm only looking at a Stage 2 power level.
-Jeff
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Old 12-09-2011, 10:25 PM   #8
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ej207?
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Old 12-10-2011, 08:35 PM   #9
ballitch
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^^ probably more than $3500.

If you're looking for someone to hand you a motor, you might want to think about raising your budget. Unless you know someone in your area that you can have build it for you as a part time side job once you gather all the pieces. An EJ257 block eats up a fair chunk of that budget.


~Josh~
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Old 12-10-2011, 09:09 PM   #10
psychorunner
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Keep an eye out for a totalled STI...If you have the time you might be able to find one for cheap. I got one for $4500, then sold a bunch of parts, basically came out even on the whole swap. Maybe I just got lucky though
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Old 12-12-2011, 12:27 PM   #11
efiniluvr
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I was thinking of pulling a stock 02-04 motor from a wreck and do a straight forward swap. No messing with tear downs, wiring, or headaches. If I decided to get a 2.5L, do I just need the ECU?
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Old 12-12-2011, 12:32 PM   #12
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the 2.5 short block is a straight swap ...but I'd get the heads cut to match the bores and be done
MOST of the 'hybrid' issues are the heads not matching the block...but that's easy

the only other thing would be arranging the breathers...but that is minutes not hours

this is not a complicated or expensive thing to do
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Old 12-12-2011, 01:56 PM   #13
efiniluvr
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Thanks Uncle Scotty,

What I meant, was I was going to swap over the entire 2.5L motor, not the EJ257 route. Just ECU and done?
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Old 12-12-2011, 10:03 PM   #14
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The EJ25's will have variable cam timing, which the EJ20 doesn't and the bugeye's computer won't support. That's why people swap an EJ25 shortblock under the EJ20 heads. Machining the combustion chambers in the EJ20 heads to EJ25 specifications is highly recommended. Then have the EJ20's computer tuned to the bigger engine.

If you do a longblock swap to an EJ25, then you will have to splice the harness and convert over to a matching ECU.

A pre-assembled EJ257 shortblock is $2,100 brand new from Subaru.
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Old 12-13-2011, 01:04 PM   #15
efiniluvr
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Thanks to everyone's input. It seems alot of you advocate the hybrid route. I think for now, I will go with a EJ20 engine pulled from the yard. If and when I have the time and money, I will built up the hybrid motor using the heads from the old motor. There is a reputable local tuner that does the head matching.

-Jeff
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