Welcome to the North American Subaru Impreza Owners Club Monday March 2, 2015
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Built Motor Discussion

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Thread Tools Display Modes
Old 01-23-2015, 11:36 AM   #1
Scooby Newbie
Member#: 375044
Join Date: Dec 2013
Location: longIsland
2002 Wrx
Blaze Yellow

Talking 2002 wrx 2.0 build - input / suggestions

Hello this post im going to explain my current setup and my upcoming build and would appreciate some tips/constructive criticism

Current setup - 2002 wrx - 2.0 stage 2
Mod list / what's done

- catless upipe
- full 3 inch hks exhaust
- cobb bell mouth downpipe
- stp intake
- fortune auto 500 coils
- 06 Sti transmission
- clutch master fx250 clutch
- 06 sti flywheel
- OTS COBB accessport tune (not a big fan of this )

This is the engine that's in my car it currently has about 125k but the Maintenence is done all the time and very well taken care of. This is currently my daily driver.

I have a spare 2.0 2002 wrx engine that 100% works and it's a complete I bought it from a good friend
- he gave me the 2002 wrx ecu
- cluster
- injectors 500cc and the oem
- 16g turbo
- complete 2.0 block that's ready to be torn down to pieces

Gameplan - sell the turbo and injectors ( goal 380-450 whp on a 2.0 it's going to be hard but do-able )

Take block apart clean everything up - do the hoses - gaskets - whatever needs to be done for the spare-

Internals - ( the list of parts im going to buy / unles anyone suggests other )
I don't want to bore out the engine to fit a bigger piston I want to run a little
tighter then OEM so I'm going to go with the 92.5mm

- FP green turbo
- walboro 350 fuel pump
- 960 cc injectors
- arp head studs
- Brian Crower pistons + Manley rods ( 92.5mm )
- ACL race rod + main bearings
- gates racing timing belt + water pump

What's else do you guys suggest ? I plan on running e-85 with this block

Should I do -
- BC valve springs and retainers
- sti cams possibly?
- better fuel rail for the e-85
- should I get the block machined at all? I don't know much about this part

Any input would help im a college student full time plus working full time so money's not to tight but I'm not
Trying to spend over $3000 in parts

Plus for the build I have my friend helping me whose a certified A tech who works for a dealership and builds cars all the time so he's going to help any input would help thanks guys!
* Registered users of the site do not see these ads.
julahz is offline   Reply With Quote
Old 01-23-2015, 03:29 PM   #2
Brother EddieJ.
Scooby Specialist
Member#: 181617
Join Date: Jun 2008
Chapter/Region: MAIC
Location: frederick, md
2004 wrx
6speed/ 330whp/ 300wtq


Finish college, don't worry about a fast car now. It will run you way more than 3k. Leave the car as-is and be happy.
Brother EddieJ. is offline   Reply With Quote
Old 01-27-2015, 01:23 AM   #3
Scooby Specialist
Member#: 207638
Join Date: Apr 2009
Location: kansas
2004 stage 3 wrx

Default 2002 wrx 2.0 build - input / suggestions

^^^^ what he said. From what you've posted you don't have enough knowledge/done the research to try and take this project on. A 450hp 2.0 is easy if you have the money to do it right.
2000subie is offline   Reply With Quote
Old 02-05-2015, 09:07 PM   #4
Scooby Newbie
Member#: 401419
Join Date: Sep 2014
Location: Denver, CO
2002 WRX


Well Nm

Last edited by SCUBATANK; 02-06-2015 at 01:30 PM.
SCUBATANK is offline   Reply With Quote
Old 02-06-2015, 11:38 AM   #5
Scooby Newbie
Member#: 244190
Join Date: Apr 2010
Location: Madison, WI
2004 WRB WRXes
Sedan and Wagon


To OP - take that 3k and buy a 2002 with a blown motor. Doing this to your daily driver will turn it into a once a month driver instead. I've gone down that road and it's not very fun.
tebriel is offline   Reply With Quote
Old 02-12-2015, 02:36 PM   #6
Scooby Newbie
Member#: 412691
Join Date: Feb 2015
Location: Santa Fe, New Mexico
2002 Subaru


I wouldn't worry about doing the heads it is unnecessary for your HP/budget! The bottom end you have planned out hold great for your HP range! E85 is a great way to get good power with the correct tune! I have a similar set up on my STI. A walboro 255 is more than enough. Get your block honed and the main bearing journals checked!
Lukecar7 is offline   Reply With Quote
Old 02-12-2015, 05:58 PM   #7
Scooby Newbie
Member#: 261696
Join Date: Oct 2010
Chapter/Region: E. Canada
Location: st johns nl
2004 wrx


2.1 stroker all the way, torque like a 2.5!
mopar3.0 is offline   Reply With Quote
Old 02-15-2015, 06:21 PM   #8
Scooby Newbie
Member#: 342743
Join Date: Jan 2013
Chapter/Region: MWSOC
Location: Michigan
2002 WRX


^What he said. 2.1 all day, high revs with built heads and torque similar to the 2.5! Thats the route I went and love it! Fun build! I'll take your 16G off your hands!
loofer is offline   Reply With Quote
Old 02-16-2015, 06:50 AM   #9
Scooby Newbie
Member#: 268117
Join Date: Dec 2010
Chapter/Region: SCIC
2005 wrx wagon


Keep it the way it is, 450 is a lot for a 2.0 daily and 3k isn't much when gsc 272 cams are 900 alone which you should get to make 450

Sent from my iPhone using NASIOC
powersuber is offline   Reply With Quote
Old 02-16-2015, 01:01 PM   #10
Scooby Specialist
Member#: 383633
Join Date: Mar 2014
Chapter/Region: RMIC
Location: Yampa, CO
2002 Impreza WRX


When you said: "Internals - ( the list of parts im going to buy / unles anyone suggests other )
I don't want to bore out the engine to fit a bigger piston I want to run a little
tighter then OEM so I'm going to go with the 92.5mm"

You know that is a bad idea and wont work. Is this your first engine build?
Shiftace420 is online now   Reply With Quote

Thread Tools
Display Modes

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 Off
Forum Jump

All times are GMT -4. The time now is 11:39 PM.

Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2015 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.