 Scubi questions, Motor questions |
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| r_towle |
 Jul 21 2008, 02:15 PM
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#1
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Custom Member  Group: Members Posts: 24,705 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States 
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So, whats the list of decent motors for a subaru swap?
What is the price range nowadays? If going down this road...is there a motor that can be upgraded to the STI motor over time??? Ideally I would like to figure out if a 2.5 liter legacy motor (or whatever) can have new cams and special head work and become an STI...etc... Rich |
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| r_towle |
Jul 21 2008, 07:28 PM
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#2
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Custom Member Group: Members Posts: 24,705 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States
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I am still confused...
The US WRX STI motor is not the same as the JDM WRX STI motor? Explain the differences once again between the 2.0 WRX motor and the STI motor... What is a semi closed deck? is the head difference or is the case closed off somehow? Rich |
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| Todd Enlund |
Jul 21 2008, 08:02 PM
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#3
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Resident Photoshop Guru Group: Members Posts: 3,251 Joined: 24-August 07 From: Laurelhurst (Portland), Oregon Member No.: 8,032 Region Association: Pacific Northwest |
QUOTE(r_towle @ Jul 21 2008, 05:28 PM)  I am still confused... The US WRX STI motor is not the same as the JDM WRX STI motor? Explain the differences once again between the 2.0 WRX motor and the STI motor... What is a semi closed deck? is the head difference or is the case closed off somehow? Rich Nope... USDM and JDM engines are different. I can't give you specifics though... but I believe that the JDM STi is still 2.0 liters. The standard Subie engine has cylinders that are free-standing in the water jacket (open deck). The semi-closed deck on the STi has webs that support the cylinders. I found a pic: http://www.grindstonemotorsports.com/tech/blockdesign.jpg |
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| budman5201 |
Jul 21 2008, 08:13 PM
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#4
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Senior Member Group: Members Posts: 595 Joined: 1-April 07 From: tempe, az Member No.: 7,635 |
Advice from my experience. (on 3rd subie conversion) This time around i am using a US spec 2.5 liter Naturally aspirated engine with free flow intake, free flow exhaust to an extent (dont want to lose too much torque) and delta 2000 grind cams. The stock 2.5 n/a is a blast, this one should be killer too. Yeah if you plan on turboing it later i would recommend going with a closed block due to the head gasket failure porblem when under boost. The STI motor has lower compression pistons so when under boost it wont detonate. But the standard 2.5 n/a motor can handle some boost to bring it up another 35 horsepower if needed in the future. (5 lbs or less boost) As long as you have a free standing computer like my setup (link computer) and you can monitor from your wideband o2 sensor at ALL rpms and loads (dynoed) then you should be fine. (ex. larger fuel injectors with turbo, programmable fuel going into cylinders,etc)
I'll release my dynoed numbers after this conversion....should be nice. (IMG:style_emoticons/default/popcorn[1].gif) stay tuned should be done by end of august with this one! Attached image(s) 
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Posts in this topic
r_towle Scubi questions Jul 21 2008, 02:15 PM
Vacca Rabite If you want to eventually go up to a STi motor, yo... Jul 21 2008, 07:08 PM
r_towle
If you want to eventually go up to a STi motor, y... Jul 21 2008, 07:16 PM Todd Enlund I believe that the STi uses a different block... i... Jul 21 2008, 07:22 PM r_towle
I am still confused...
The US WRX STI motor is n... Jul 21 2008, 08:27 PM Vacca Rabite
And...
What is the base HP for these motors?
I do... Jul 21 2008, 09:26 PM budman5201 next subie conversion Jul 21 2008, 08:13 PM jimkelly http://www.renegadehybrids.com/914/Subie/Subie.htm... Jul 21 2008, 08:34 PM DBCooper Unless you intend to get north of 350 horsepower t... Jul 21 2008, 09:34 PM Todd Enlund I just remembered another consideration... the STi... Jul 21 2008, 11:14 PM DBCooper
I just remembered another consideration... the ST... Jul 22 2008, 07:38 AM Zaney Here ya go Rich!
STi engine on Evilbay
:bee... Jul 22 2008, 12:18 AM r_towle It looks like a turn key WRX STI motor is the plac... Jul 22 2008, 08:58 AM Zaney :hijacked: I am now in a dilemma in chosing a Suby... Jul 22 2008, 10:32 AM Vacca Rabite
I thought I wanted to go the 2.5 Sti turboed wit... Jul 22 2008, 12:27 PM ninefourteener 2002-2005 WRX - 2.0L, 227 HP, TD04 turbo
2006-200... Jul 22 2008, 03:33 PM WRX914 I bought my EJ20 for $2k complete. 2 years l... Jul 24 2008, 01:06 PM 914helo I'm hoping to finish my SVX conversion soon. ... Jul 24 2008, 06:42 PM pffft I really like the forester/baja 2.5t motors. Where... Jul 24 2008, 08:13 PM 914helo I think most people have purchased them off of Cra... Jul 24 2008, 08:43 PM WRX914
I think most people have purchased them off of Cr... Jul 25 2008, 04:46 PM WRX914 also...
If $$$ is not an issue...
... Jul 25 2008, 04:54 PM DBCooper Gruppe-S lists all the engines, including the STI,... Jul 25 2008, 06:40 PM |
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