stock sti short block vs built block as a daily driver - Subaru WRX Forum
Reply
 
LinkBack Thread Tools Display Modes
#1 Old 02-23-2012, 06:07 PM
WRXtuners Member
 
rex2002's Avatar
 
Join Date: Mar 2009
Location: Tennessee
Posts: 308
Images: 7
rex2002 is known to be trustworthy and helpful rex2002 is known to be trustworthy and helpful
Send a message via AIM to rex2002 Send a message via Skype™ to rex2002
stock sti short block vs built block as a daily driver

im due for a rebuild. going to drop in a sti block. but my question is, is it really worth it to build the short block or just keep it stock. i dont plan on doing any racing or track at all.yea everyone now and then ill hit pedal to the metal and have some fun,but thats about it. its going to be my daily driver and want it to last another 10 years. ive got a 2002 with about 147k miles running stage 2 and i want to add the sti block and supporting mods to build a decent street machine. what are some other users horsepower numbers on a stock sti with an upgraded turbo with supporting mods. also one last question when it comes to turbos. if im only aiming at high 300+ hp numbers(for the time) is it best to buy a turbo with a higher rated horsepower(say 450hp) and just keep low boost or buy a turbo rated for my needs. i just dont want to "double dip" and buy another turbo down the road when i want more horsepower.i know the weak link is always the tranny which someone may bring up,but i do plan on upgrading the tranny once its needed.
as always thanks for everyone's help
rex2002 is offline  
Sponsored Links
Advertisement
 
#2 Old 02-23-2012, 06:53 PM
Moderator
 
newtothegame's Avatar
 
Join Date: Dec 2006
Location: Maryland
Posts: 6,493
Images: 4
newtothegame is known to be trustworthy and helpful newtothegame is known to be trustworthy and helpful
Send a message via Yahoo to newtothegame
Im just curious as to what makes you think that you need a rebuild now, or in your near future? And why going with an ej257 makes a "better street machine" than a ej205/207? You are looking at ECU issues that will need to be overcome right off the bat there that will add to your total budget. Another thing that would help is describing, or letting us know what you mean by "high" 300+ hp? I mean is that 399 AWHP, or are we talking 335 as thats 35 HP over 300? In no means am I trying to be a d!ck, just trying to make sure I or anyone else understands and gets the full picture of what you yourself are trying to build/achieve.

Joshua
"2007 WRX- PPG'd, 20G- Tim Bailey tuned
Stage 2 2005 WRX
Cobbtuning.com"
newtothegame is offline  
#3 Old 02-23-2012, 07:18 PM
WRXtuners Member
 
rex2002's Avatar
 
Join Date: Mar 2009
Location: Tennessee
Posts: 308
Images: 7
rex2002 is known to be trustworthy and helpful rex2002 is known to be trustworthy and helpful
Send a message via AIM to rex2002 Send a message via Skype™ to rex2002
i want to upgrade to the 2.5 sti short block. i know i need a custom tune which i can get done with my coob ap. i always hear on the forum about putting bigger turbos on a high miles motor. i was looking at an ej25(or any engine code that was used for all years usdm sti motors).my goal is to get around 370hp. i know with the cobb stage 3 build will yield me around those numbers but with a sti block and a custom tune i can get some better results. i would def. like to do the cobb stage 3,but ive seen so many people on here talk down about putting more hp on a stock 2.0 with high miles. basically im ready to do some more engine mods and just dont want to make the wrong choice.
rex2002 is offline  
#4 Old 02-23-2012, 07:24 PM
WRXtuners Member
 
Join Date: May 2006
Location: Virginia
Posts: 2,320
Images: 9
brfatal is a WRX expert worth listening to brfatal is a WRX expert worth listening to brfatal is a WRX expert worth listening to
Garage
I have had:

- Stock engine
- EJ205 w/ forged pistons and rods
- EJ257/205 hybrid
- EJ257/205 hybrid w/ forged pistons
- EJ257 w/ cams, valvetrain, forged rods, and forged pistons.

The most reliable was my factory motor. A factory assembled motor has less likely to go wrong with it than something a person has to build.

And I'm confused, are you talking 370 hp to the crank?
brfatal is offline  
#5 Old 02-23-2012, 07:33 PM
WRXtuners Member
 
rex2002's Avatar
 
Join Date: Mar 2009
Location: Tennessee
Posts: 308
Images: 7
rex2002 is known to be trustworthy and helpful rex2002 is known to be trustworthy and helpful
Send a message via AIM to rex2002 Send a message via Skype™ to rex2002
im aiming at the most hp i can get with in the guidelines of the stage 3 cobb map but with a custom tune for my car. i plan to get plenty of parts p&p from GrimmSpeed or a local shop. also going to buy small mobs that dont fall in line with the "guidelines" of cobbs stage 3 requirements
rex2002 is offline  
#6 Old 02-23-2012, 09:02 PM
WRXtuners Member
 
Join Date: May 2006
Location: Virginia
Posts: 2,320
Images: 9
brfatal is a WRX expert worth listening to brfatal is a WRX expert worth listening to brfatal is a WRX expert worth listening to
Garage
Nothing about an EJ25 block is within the guidelines for a generic Cobb map.
brfatal is offline  
#7 Old 02-23-2012, 09:04 PM
WRXtuners Member
 
turmic's Avatar
 
Join Date: Jul 2007
Location: Pennsylvania
Posts: 4,368
Images: 6
turmic is a WRX expert worth listening to turmic is a WRX expert worth listening to turmic is a WRX expert worth listening to turmic is a WRX expert worth listening to
Send a message via AIM to turmic
Still need to know if you're talking about wheel or crank hp. Two very different ways to get there depending on which one you're talking about.

Kirt
378awhp/373wtq Custom Dom 3 & CBRD tuned 2006 STI.
"When in doubt...flat out" - Colin McRae
turmic is offline  
#8 Old 02-23-2012, 09:23 PM
WRXtuners Member
 
rex2002's Avatar
 
Join Date: Mar 2009
Location: Tennessee
Posts: 308
Images: 7
rex2002 is known to be trustworthy and helpful rex2002 is known to be trustworthy and helpful
Send a message via AIM to rex2002 Send a message via Skype™ to rex2002
Quote:
Originally Posted by brfatal View Post
Nothing about an EJ25 block is within the guidelines for a generic Cobb map.
im basing my build off of the stage 3 setup but with a sti short block. still need to buy the injectors and the turbo.also going to get a protune to get the most hp out of my build. i know there is no off the shelf map for a hybrid build on the ap but i can still use the stage 3 build guidelines as starting point.
rex2002 is offline  
#9 Old 02-23-2012, 09:27 PM
WRXtuners Member
 
rex2002's Avatar
 
Join Date: Mar 2009
Location: Tennessee
Posts: 308
Images: 7
rex2002 is known to be trustworthy and helpful rex2002 is known to be trustworthy and helpful
Send a message via AIM to rex2002 Send a message via Skype™ to rex2002
Quote:
Originally Posted by turmic View Post
Still need to know if you're talking about wheel or crank hp. Two very different ways to get there depending on which one you're talking about.
cobb dyno sheet on stage 3 build shows it as wheel horsepower so thats what im aiming at.
forgive me for im a little confused on that topic. i know there's crank and wheel hp but cobb stated about drivetrain loss is that what "crank" horsepower is also referred as
rex2002 is offline  
#10 Old 02-24-2012, 09:32 AM
WRXtuners Member
 
Join Date: May 2006
Location: Virginia
Posts: 2,320
Images: 9
brfatal is a WRX expert worth listening to brfatal is a WRX expert worth listening to brfatal is a WRX expert worth listening to
Garage
The hp numbers claimed by Cobb are always crank hp. If you think you're gonna get 370 whp using their stage list as what you're going off you're high. Their "370 hp" is less than 300 whp.
brfatal is offline  
#11 Old 02-24-2012, 06:11 PM
WRXtuners Member
 
turmic's Avatar
 
Join Date: Jul 2007
Location: Pennsylvania
Posts: 4,368
Images: 6
turmic is a WRX expert worth listening to turmic is a WRX expert worth listening to turmic is a WRX expert worth listening to turmic is a WRX expert worth listening to
Send a message via AIM to turmic
^This

Cobb always lists crank hp. If 370whp was so easy to get...then I wouldn't have messed around for so long to obtain it.

Kirt
378awhp/373wtq Custom Dom 3 & CBRD tuned 2006 STI.
"When in doubt...flat out" - Colin McRae
turmic is offline  
#12 Old 02-24-2012, 08:32 PM
WRXtuners Member
 
basco's Avatar
 
Join Date: Aug 2004
Location: South Carolina
Posts: 1,873
basco is a WRX expert worth listening to basco is a WRX expert worth listening to basco is a WRX expert worth listening to basco is a WRX expert worth listening to basco is a WRX expert worth listening to basco is a WRX expert worth listening to
Send a message via AIM to basco Send a message via MSN to basco
If you want a reliable DD for the stay with a factory motor

FP GT35R MoTeC M800 AndrewTech PPG'd Wagon - 513AWHP
06 Mazdaspeed6 280/330
- Matt
basco is offline  
#13 Old 02-24-2012, 10:15 PM
WRXtuners Member
 
Join Date: May 2006
Location: Virginia
Posts: 2,320
Images: 9
brfatal is a WRX expert worth listening to brfatal is a WRX expert worth listening to brfatal is a WRX expert worth listening to
Garage
The object on the right is what your car comes with stock, and what you need to hit 370 is on the left. You be the judge.

brfatal is offline  
#14 Old 02-25-2012, 08:34 AM
WRXtuners Member
 
rex2002's Avatar
 
Join Date: Mar 2009
Location: Tennessee
Posts: 308
Images: 7
rex2002 is known to be trustworthy and helpful rex2002 is known to be trustworthy and helpful
Send a message via AIM to rex2002 Send a message via Skype™ to rex2002
Quote:
Originally Posted by brfatal View Post
The object on the right is what your car comes with stock, and what you need to hit 370 is on the left. You be the judge.

which turbo is that on the left.im looking at getting Subaru WRX/STi TD05H-16G-XT Turbocharger
rex2002 is offline  
#15 Old 02-25-2012, 09:36 AM
WRXtuners Member
 
Join Date: May 2006
Location: Virginia
Posts: 2,320
Images: 9
brfatal is a WRX expert worth listening to brfatal is a WRX expert worth listening to brfatal is a WRX expert worth listening to
Garage
Blouch Dominator 3. A stock position, shrunken down Garrett GT3076.

You'll be lucky to hit 300 on that 16G.
brfatal is offline  
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On