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01-21-2010, 10:21 AM | #1 |
Scooby Newbie
Member#: 177527
Join Date: Apr 2008
Chapter/Region:
W. Canada
Location: Edmonton Canada
Vehicle:2004 STI Silver |
04-06 STI short block= 08 STI short block
I've been trying to find out if the 08STI short block is the same as the 04-06 STI short block but I haven't found anything. So does anybody know if they are or what the diffrence is between them. Any info would great.
Thanks
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01-21-2010, 11:47 AM | #2 |
Scooby Guru
Member#: 51961
Join Date: Jan 2004
Chapter/Region:
RMIC
Location: Broomfield, CO
Vehicle:2005 STi 2012 WRX |
The short block casting, or the full assembly? As far as I know the casting is the same, but the full assembly isn't. I believe the pistons and rods are the same, the crank is nitrided (or was that the 09? I forget), and the oil pump is larger for the dual AVCS.
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01-21-2010, 12:34 PM | #3 |
Scooby Newbie
Member#: 190449
Join Date: Sep 2008
Chapter/Region:
MWSOC
Location: breathin down yo neck foo
Vehicle:2008 RAW motor/Ah2nD Aspen White |
i think the nitrided crank started in 09.
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01-21-2010, 01:35 PM | #4 |
Scooby Newbie
Member#: 177527
Join Date: Apr 2008
Chapter/Region:
W. Canada
Location: Edmonton Canada
Vehicle:2004 STI Silver |
Complete short block, I'm building a new motor for 04 STI and want know if the 08 block will work and if there's an advantage to using it.
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01-21-2010, 02:25 PM | #5 |
Scooby Newbie
Member#: 190449
Join Date: Sep 2008
Chapter/Region:
MWSOC
Location: breathin down yo neck foo
Vehicle:2008 RAW motor/Ah2nD Aspen White |
it will work fine but at least do some drop in pistons.
know what i'm sayin. |
01-21-2010, 02:36 PM | #6 |
*** Banned ***
Member#: 149114
Join Date: May 2007
Location: I'm too mainstream
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09 sti block cylinder walls a slightly thicker.. I think by 1mm.
When i measured 04-07 it was about 9mm thick, 09 i thnk is 10mm. (should have wrote this **** down) obviously as above 09 crank is nitrided because subaru either stopped or decreased using lead in some bearings (environmental speel) |
01-21-2010, 02:40 PM | #7 |
Former Vendor
Member#: 33174
Join Date: Feb 2003
Chapter/Region:
RMIC
Location: Salt Lake City Utah
Vehicle:Chat Email or Phone! 888-457-2559 |
Subaru also changed the casting process in 2007. Went from the 702 to the 703.
The 703 Castings are allot smoother inside the passages, making them more efficient to fluid flow internally. |
01-21-2010, 03:39 PM | #8 |
Scooby Specialist
Member#: 77470
Join Date: Dec 2004
Chapter/Region:
MWSOC
Location: grove city ohio
Vehicle:04 sti 10.41@141 on e85@ 30psi--spinning |
also you will have to decide on which oil pump to use because it does not come on a new shortblock.
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01-21-2010, 03:40 PM | #9 |
Scooby Newbie
Member#: 177527
Join Date: Apr 2008
Chapter/Region:
W. Canada
Location: Edmonton Canada
Vehicle:2004 STI Silver |
So then the 08 sti block will work in any 04 sti with 04 sti heads.
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01-21-2010, 03:49 PM | #10 |
Scooby Specialist
Member#: 77470
Join Date: Dec 2004
Chapter/Region:
MWSOC
Location: grove city ohio
Vehicle:04 sti 10.41@141 on e85@ 30psi--spinning |
yes it will work fine
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01-22-2010, 06:08 AM | #11 |
Scooby Newbie
Member#: 135627
Join Date: Dec 2006
Chapter/Region:
SWIC
Location: Peoria, AZ
Vehicle:2005 WRX td06-20g ej207/02 wrx/s4/C32 AMG |
+1 on the 07+ motors having smoother castings. They is a very noticeable difference when comparing to older motors, much less burrs and sharp little edges. Theoretically those things can lead to the beginning of a stress spot, and are often where failures/breakage happens if it does.
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01-22-2010, 10:43 AM | #12 | |
Scooby Guru
Member#: 103232
Join Date: Dec 2005
Chapter/Region:
Tri-State
Location: GTX3576R 05GD, GTX3076R'd FXT
Vehicle:GTX 3071R'd 11WRX PPG,4.44,LSD,E85,6spdx3 |
Quote:
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01-22-2010, 10:49 AM | #13 |
Scooby Guru
Member#: 103232
Join Date: Dec 2005
Chapter/Region:
Tri-State
Location: GTX3576R 05GD, GTX3076R'd FXT
Vehicle:GTX 3071R'd 11WRX PPG,4.44,LSD,E85,6spdx3 |
Edit: Bad info on my part sorry...
Last edited by rexworx; 01-22-2010 at 11:22 AM. |
01-22-2010, 10:52 AM | #14 | |
Scooby Guru
Member#: 51961
Join Date: Jan 2004
Chapter/Region:
RMIC
Location: Broomfield, CO
Vehicle:2005 STi 2012 WRX |
Quote:
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01-22-2010, 11:21 AM | #15 |
Scooby Guru
Member#: 103232
Join Date: Dec 2005
Chapter/Region:
Tri-State
Location: GTX3576R 05GD, GTX3076R'd FXT
Vehicle:GTX 3071R'd 11WRX PPG,4.44,LSD,E85,6spdx3 |
They do? Well Im a dumbass sorry...
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