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-   -   stock sti short block vs built block as a daily driver (http://www.wrxtuners.com/forums/f103/stock-sti-short-block-vs-built-block-daily-driver-32086/)

rex2002 02-23-2012 06:07 PM

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 !Thumbs Up

newtothegame 02-23-2012 06:53 PM

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.

rex2002 02-23-2012 07:18 PM

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.

brfatal 02-23-2012 07:24 PM

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?

rex2002 02-23-2012 07:33 PM

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

brfatal 02-23-2012 09:02 PM

Nothing about an EJ25 block is within the guidelines for a generic Cobb map.

turmic 02-23-2012 09:04 PM

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.

rex2002 02-23-2012 09:23 PM

[quote=brfatal;276080]Nothing about an EJ25 block is within the guidelines for a generic Cobb map.[/quote]

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 02-23-2012 09:27 PM

[quote=turmic;276081]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.[/quote]

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

brfatal 02-24-2012 09:32 AM

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.

turmic 02-24-2012 06:11 PM

^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.

basco 02-24-2012 08:32 PM

If you want a reliable DD for the stay with a factory motor

brfatal 02-24-2012 10:15 PM

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.

[IMG]http://i7.photobucket.com/albums/y258/ninjabally123/Picture141.jpg[/IMG]

rex2002 02-25-2012 08:34 AM

[quote=brfatal;276139]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.

[IMG]http://i7.photobucket.com/albums/y258/ninjabally123/Picture141.jpg[/IMG][/quote]
which turbo is that on the left.im looking at getting [url=http://www.bptstore.com/Subaru-WRXSTi-TD05H-16G-XT-Turbocharger_p_23.html]Subaru WRX/STi TD05H-16G-XT Turbocharger[/url]

brfatal 02-25-2012 09:36 AM

Blouch Dominator 3. A stock position, shrunken down Garrett GT3076.

You'll be lucky to hit 300 on that 16G.


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