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Old 08-15-2003, 07:17 AM   #1
RedMenace
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Default This may be the n00b question of the year....

Would a 2.5 auto engine bolt up to a manual tranny? My '99 wagon made a loud POP and died today when I tried to start her, and I want to have a contingency plan just in case the worst is realized. Thanks for the assistance.
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Old 08-15-2003, 08:46 AM   #2
Legacy777
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yes
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Old 08-15-2003, 09:18 AM   #3
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There have been nOObier questions this year
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Old 08-15-2003, 09:19 AM   #4
Legacy777
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Quote:
Originally posted by nitrohuffer
There have been n00bier questions this year
agreed
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Old 08-15-2003, 12:33 PM   #5
RedMenace
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Heh, glad to hear... thanks for the replies.
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Old 08-15-2003, 02:57 PM   #6
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To add detail, yes, but I think you'll need to transfer the flywheel from the other engine, as they're different...
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Old 08-15-2003, 03:37 PM   #7
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IIRC there's a difference in the block to transmission hole/bolt pattern between the Phase I and Phase II decks. Haven't had to swap one out so don't know if this effects bolting back up but that may be one area to check in addition to the torque converter/flywheel issue which was already mentioned. Is your contingency engine out of a Auto car or ther other way around?

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Old 08-15-2003, 03:41 PM   #8
KD7000
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Default not really the n00b question of the year

Given this line:
Quote:
Would a 2.5 auto engine bolt up to a manual tranny?
it sounds like his car is a 5 spd manual, while the potential donor motor comes from an auto.

But that's just my interpretation

-Brian
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Old 08-15-2003, 05:03 PM   #9
RedMenace
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^^^^

What he said.
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Old 08-15-2003, 05:21 PM   #10
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That's what I thought but better to ask the question...

The the flywheel will be an issue and the, as still unresolved question of whether your're going with a P-I or P-II block... and you should be good to go. I believe Legacys produced after April 99 transitioned to the P-II blocks but there are some older models that have been back-fitted with the P-II block. Just check the bell-housing holes to make sure they'll bolt up.

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Old 08-15-2003, 05:44 PM   #11
noahr
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if you're going to get a new motor, why not a turbo? a wrx motor will bolt up as well (with some minor complications) ->crossmember, ecu, fuel pump to name a few.
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Old 08-15-2003, 06:10 PM   #12
RedMenace
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Well, I'm not even sure I have to do this yet... the only reason I ask is because if I do have to replace the motor, I've got a good lead on an auto '98 Outback and just wanted to make sure there weren't going to be major fittment issues with the tranny.

Eh, the turbo was the original plan at one time, but trying to buy a house kinda kills things like that.... unless I can find a cheap rolled WRX and someone to do the install... erm, cheap.
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Old 08-15-2003, 06:32 PM   #13
Subietonic
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WRT the 2.5L's introduced on/after April 1999, believe that was the point where Subaru introduced the MAP sensor and did away with the MAF so you'll have some potential rewiring to look at as well if you're not swapping apples for apples. If it's MAF (98 OB for sure) to MAF (Your pre-4/99 Legacy), you'll be good to go with just the other things mentioned above.

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Old 08-15-2003, 07:52 PM   #14
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i'm almost positive they didn't switch the legacy's to map until 2000 with the release of the newer body. the only changes were using the phase II blocks with the dohc heads. should not be a problem wiring.
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Old 08-15-2003, 09:30 PM   #15
Subietonic
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The en masse conversion really took place in 2000 with the 3rd Gens as you mention, however, I've got a 99 sitting in the driveway right now with a MAP engine in it. The torque box is now the air filter box and all the other snorkus "stuff" sits along the inside of the right fender. That plus I always get asked at the dealer when I order parts for it, what the production date is and when I tell them April 1999, they say hold on that's when Subaru changed over... I've seen other 99 Legacy 2.5L's here in CA with the same set up so there is some segment that is converted over. RedMenace may have the 2.5L MAF but I thought it prudent to mention just in case.

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Old 08-16-2003, 02:40 PM   #16
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subietonic- that's freakin rad that you have a map sensored legacy. those are a little easier to turbo by the way. is it a dohc or sohc?
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Old 08-16-2003, 05:19 PM   #17
Subietonic
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It's a SOHC.

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Old 08-17-2003, 10:51 PM   #18
RedMenace
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Actually, I don't have a 2.5 yet, I'm smokin' with the supah-leet 2.2.... if it went (which doesn't seem to be the case now -- oh well ), I was gonna just drop a 2.5 in there from a wrecked Outback or Impreza or something.... bah. If I decide to do it anyway, is there any extra wiring that would have to happen for the 2.5 ECU to go in there? Would it just be a "plug and play" type of deal? Thanks for the info folks... you've been informative.
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