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Old 06-29-2015, 05:09 PM   #1
Sinix3
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Member#: 424505
Join Date: Jun 2015
Cool very new looking for build input

hello all i am new to this glorious site but im hoping to become an active member. so down to brass tacks i purchased a 91 legacy wagon with a 2.2 and an auto so in being young and dum iv decided to build a 2.5 to drop in with a 5 speed because auto is for girls and the elderly (no offence intended just not a fan of automatic), i currently have a ej25d ready for stripdown and rebuild, my plan thus far is to strip the block
pin the water jackets for block integrity
forged internals
ej25 heads dohc
and some how cram an eaton m90 under the hood because i happen to have one lying arounf
my question is does anyone know how much boost i can add before having to go stand alone or piggy back ecu
also does anyone know where i can get a manual steering rack for my legacy
any help appreciated. thank you in advance
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Old 06-29-2015, 06:17 PM   #2
monkeyposeur
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Member#: 333468
Join Date: Sep 2012
Chapter/Region: RMIC
Location: SLC, UT
Vehicle:
1993 SS
03 WRB GD 205/22T 20G-XT

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Since you have a first gen I suggest you get on bbslegacycentral.org. It is the best site for information about first gens out there and the amount of knowledge on that site is amazing.

Reddevil, a member on this site, has installed a supercharger on a first gen, iirc. Search for his supercharger thread. It would be a lot simpler for you to turbocharge vs. supercharge but if you want to do it, go for it.

There is most likely no way that your stock ecu will be able to run the setup you are proposing with 25d dohc heads. It can run 20G dohc heads with some simple modifications to the wiring harness, and you could swap in a JDM 20G ecu. You can even have rob chip the 20G ecu to run a pretty aggressive setup. Search robtune on bbslegacycentral.

I am pretty sure the steering rack is the same for auto and manual first gens. Here is a link to Josh777s site where you can download the FSM and Parts catalog for first gens in case you want to cross reference part numbers: http://www.surrealmirage.com/subaru/tech.html

Josh also did an excellent write up on how to swap a first gen from auto to manual: http://www.surrealmirage.com/subaru/swap/swap.html
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Old 07-20-2015, 01:59 PM   #3
outfrontmotorsports
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Member#: 220204
Join Date: Aug 2009
Chapter/Region: SCIC
Location: Buena Park, CA
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we have some Gen 1 H beam rods brand new for $300 with ARP 2000 bolts in stock for your project too

Outfront
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Old 07-30-2015, 10:15 PM   #4
Sinix3
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Member#: 424505
Join Date: Jun 2015
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Well I went ahead on my 5 speed swap since 2 weeks ago the auto tranny decided to puke out the front seal. I found his page and I followed his instructions best I could but now the car won't start. It cranks but no start. It sounds like I'm not getting fuel or spark so Im working on that and with that the supercharger idea has fallen out of thought haha
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