Welcome to the North American Subaru Impreza Owners Club Friday August 1, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
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 > Factory 2.0L Turbo Powertrain

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.
Reply
 
Thread Tools Display Modes
Old 04-29-2013, 09:29 PM   #1
dburgoon
Scooby Specialist
 
Member#: 310366
Join Date: Feb 2012
Chapter/Region: South East
Location: Ft Myers, FL
Vehicle:
03 vf37'd WRB
Bugeye

Default

I'm building my car after blowing up the stock engine. My goal is over 300awhp on a vf series turbo.


What I have:
Ej205 in the process of being rebuilt
ACL bearings
Balanced lightened and knife edged crank
Re-seated valves and port and polished head (stock valves, cams, etc.)

My plans:
Vf series turbo (because they are cheap enough and I plan on having a anti-lag tune for autoX)
850cc injectors
Water/meth injection
DW 300 fuel pump
EWG 38mm tial
Invidia 3in catless downpipe
Phatbotti tune for 93 octane
Bigger tmic (not sure what brand yet)


What I need to know:
What pistons should I run? (Higher compression, etc?)
Is my goal possible with this setup?
What else should I invest in? This is my daily too

Thanks in advance
* Registered users of the site do not see these ads.
dburgoon is offline   Reply With Quote
Old 04-29-2013, 09:34 PM   #2
Str8Gone
Scooby Specialist
 
Member#: 147972
Join Date: May 2007
Chapter/Region: MAIC
Location: severna park md
Vehicle:
2004 wrx hybrid 18g
jbp

Default

With meth it might be possible, i made 289whp with my vf43 straight 93. Get some forged pistons with stock or slighty higher compression should be fine.
Str8Gone is offline   Reply With Quote
Old 04-29-2013, 09:35 PM   #3
Dr. octagon
Scooby Specialist
 
Member#: 171127
Join Date: Feb 2008
Chapter/Region: MAIC
Location: Fredericksburg
Vehicle:
02 Rotated
Kinugawa

Default

proven power section......search..........your answers are within. Seriously that is where i would be looking for vf series high output.

And on what dyno would this 320awhp be found?
Dr. octagon is offline   Reply With Quote
Old 04-29-2013, 09:38 PM   #4
dangerousatom
Scooby Specialist
 
Member#: 70710
Join Date: Sep 2004
Chapter/Region: Tri-State
Location: Quakertown/AREA1320 391whp
Vehicle:
2002 04STi Swaped RS
w/PPGS & 02 Wagon w/PPGs

Default

forget the Meth and get a Blouch 16g-xt-r and 850cc injectors

At 21psi I was 310whp/301tq with 565cc injectors ( 98% duty )and a Process West TMIC all on 93 pump gas. Spooled up like a stock TD04
dangerousatom is offline   Reply With Quote
Old 04-29-2013, 09:42 PM   #5
dburgoon
Scooby Specialist
 
Member#: 310366
Join Date: Feb 2012
Chapter/Region: South East
Location: Ft Myers, FL
Vehicle:
03 vf37'd WRB
Bugeye

Default

Quote:
Originally Posted by Dr. octagon View Post
proven power section......search..........your answers are within. Seriously that is where i would be looking for vf series high output.

And on what dyno would this 320awhp be found?
I tried, the answer was not clear because no one had the raw numbers from the dyno, they were all adjusted and that's not very trustworthy to me. And they are all against meth it seems to me.

Whichever dyno import image uses I guess, I'm going to get my tuning done there
dburgoon is offline   Reply With Quote
Old 04-29-2013, 09:43 PM   #6
dburgoon
Scooby Specialist
 
Member#: 310366
Join Date: Feb 2012
Chapter/Region: South East
Location: Ft Myers, FL
Vehicle:
03 vf37'd WRB
Bugeye

Default

Quote:
Originally Posted by dangerousatom View Post
forget the Meth and get a Blouch 16g-xt-r and 850cc injectors

At 21psi I was 310whp/301tq with 565cc injectors ( 98% duty )and a Process West TMIC all on 93 pump gas. Spooled up like a stock TD04
I have heard the spool on 16g is slower, also they are a bit much for me if I want to run an anti-lag system.

EDIT: I guess if I didn't run the ALS and without meth the 16g would be about the same cost and it would last longer than a vf
dburgoon is offline   Reply With Quote
Old 04-29-2013, 10:16 PM   #7
WhiteBgeye02
Scooby Specialist
 
Member#: 224785
Join Date: Sep 2009
Chapter/Region: MWSOC
Location: neenah
Vehicle:
2005 wrx-jdm207
i went black...

Default

on a mustang dyno no. on a dynojet prob about 70% chance. hp is relative not absolute so it shouldnt even be discussed any furthur.
WhiteBgeye02 is offline   Reply With Quote
Old 04-29-2013, 10:26 PM   #8
dburgoon
Scooby Specialist
 
Member#: 310366
Join Date: Feb 2012
Chapter/Region: South East
Location: Ft Myers, FL
Vehicle:
03 vf37'd WRB
Bugeye

Default

Quote:
Originally Posted by WhiteBgeye02 View Post
on a mustang dyno no. on a dynojet prob about 70% chance. hp is relative not absolute so it shouldnt even be discussed any furthur.
Makes sense, I got the answer I wanted. Just curious as to if I should just stick with stock pistons or go with something with a little higher compression?
dburgoon is offline   Reply With Quote
Old 04-29-2013, 11:18 PM   #9
brew02wrx
Scooby Specialist
 
Member#: 259970
Join Date: Oct 2010
Chapter/Region: Tri-State
Location: brewster, NY
Vehicle:
2002 wrx cobb stg2+
psm proper fitment

Default

Quote:
Originally Posted by dburgoon View Post
Makes sense, I got the answer I wanted. Just curious as to if I should just stick with stock pistons or go with something with a little higher compression?
considering you're already rebuilding the 205 you might as well go with better pistons instead of buttoning it up and having something go wrong b/c you're pushing stock cast pistons to their limits and having to tear the block apart all over again. As for which pistons to get you need to contact mikey and go over your plans with him. He'll guide you in the right direction.
brew02wrx is offline   Reply With Quote
Old 04-30-2013, 01:08 AM   #10
Fierysun
Scooby Specialist
 
Member#: 82745
Join Date: Mar 2005
Chapter/Region: SCIC
Location: So Cal
Vehicle:
2005 Subaru STI
2003 WRX Wagon

Default

Having gone through 5x different turbo swaps on my ej205, i would say it's very unlikely you'll hit 320whp with any VF turbos on the ej205, especially the cheap and plentiful kind.

Here's my setup with the vf39 along with the tomei 7760 for reference.

http://forums.nasioc.com/forums/show...ighlight=tomei

You don't want to run higher compression than stock. You will make less power on pump, because of knock.
Fierysun is offline   Reply With Quote
Old 04-30-2013, 08:59 AM   #11
wrxlaunch
Scooby Specialist
 
Member#: 181298
Join Date: May 2008
Chapter/Region: MAIC
Location: MD
Vehicle:
02 , Vf43 Inside..
12 seconds at a time

Default

Quote:
Originally Posted by dburgoon View Post
I'm building my car after blowing up the stock engine. My goal is over 300awhp on a vf series turbo.

What I have:
Ej205 in the process of being rebuilt
ACL bearings
Balanced lightened and knife edged crank
Re-seated valves and port and polished head (stock valves, cams, etc.)

My plans:
Vf series turbo (because they are cheap enough and I plan on having a anti-lag tune for autoX)
850cc injectors
Water/meth injection
DW 300 fuel pump
EWG 38mm tial
Invidia 3in catless downpipe
Phatbotti tune for 93 octane
Bigger tmic (not sure what brand yet)

What I need to know:
What pistons should I run? (Higher compression, etc?)
Is my goal possible with this setup?
What else should I invest in? This is my daily too

Thanks in advance
320whp not likey with a vf on a 2.0 using 93oct. Why waste money building a 2.0 instead of a hybrid swap? Way more trq to have fun with

Last edited by wrxlaunch; 04-30-2013 at 10:44 AM.
wrxlaunch is offline   Reply With Quote
Old 04-30-2013, 11:45 AM   #12
quazimoto
Scooby Guru
 
Member#: 70395
Join Date: Sep 2004
Chapter/Region: MAIC
Location: Da-boonies,Va
Default

2.1 stroker.......
quazimoto is offline   Reply With Quote
Old 04-30-2013, 12:09 PM   #13
dburgoon
Scooby Specialist
 
Member#: 310366
Join Date: Feb 2012
Chapter/Region: South East
Location: Ft Myers, FL
Vehicle:
03 vf37'd WRB
Bugeye

Default

Quote:
Originally Posted by wrxlaunch View Post

320whp not likey with a vf on a 2.0 using 93oct. Why waste money building a 2.0 instead of a hybrid swap? Way more trq to have fun with
Because I wasn't given a ej25, I had someone give me a ej20
dburgoon is offline   Reply With Quote
Old 04-30-2013, 12:22 PM   #14
wrxlaunch
Scooby Specialist
 
Member#: 181298
Join Date: May 2008
Chapter/Region: MAIC
Location: MD
Vehicle:
02 , Vf43 Inside..
12 seconds at a time

Default

Stock trans?
wrxlaunch is offline   Reply With Quote
Old 04-30-2013, 12:25 PM   #15
Dr. octagon
Scooby Specialist
 
Member#: 171127
Join Date: Feb 2008
Chapter/Region: MAIC
Location: Fredericksburg
Vehicle:
02 Rotated
Kinugawa

Default

Quote:
Originally Posted by quazimoto View Post
2.1 stroker.......
^
This hopefully
Dr. octagon is offline   Reply With Quote
Old 04-30-2013, 12:27 PM   #16
dburgoon
Scooby Specialist
 
Member#: 310366
Join Date: Feb 2012
Chapter/Region: South East
Location: Ft Myers, FL
Vehicle:
03 vf37'd WRB
Bugeye

Default

Quote:
Originally Posted by wrxlaunch View Post
Stock trans?
For now. I have 6 speed plans in the future
dburgoon is offline   Reply With Quote
Old 04-30-2013, 12:29 PM   #17
RIBahler
Scooby Newbie
 
Member#: 326537
Join Date: Jul 2012
Chapter/Region: NWIC
Location: Oregon
Vehicle:
2005 WRX STi Wagon
Crystal Grey Metallic

Default

It is possible to get 320awhp on a VF43 with a 2.0. Here is proof on my project for your reference.

http://forums.nasioc.com/forums/show....php?t=2413383
RIBahler is offline   Reply With Quote
Old 04-30-2013, 12:38 PM   #18
dburgoon
Scooby Specialist
 
Member#: 310366
Join Date: Feb 2012
Chapter/Region: South East
Location: Ft Myers, FL
Vehicle:
03 vf37'd WRB
Bugeye

Default

Quote:
Originally Posted by RIBahler View Post
It is possible to get 320awhp on a VF43 with a 2.0. Here is proof on my project for your reference.

http://forums.nasioc.com/forums/show....php?t=2413383
Awesome! Thanks, how's the tranny holding up?
dburgoon is offline   Reply With Quote
Old 04-30-2013, 01:06 PM   #19
2gnt2wrx
Scooby Specialist
 
Member#: 123625
Join Date: Aug 2006
Chapter/Region: MWSOC
Location: Waukesha, WI
Vehicle:
2002 wrx
wrb stg2

Default

My ej205, headers, full exhaust, VF34 iwg, ebcs, aps tmic, and id 750's made 295whp on Cobb Plano's Mustang dyno. I would think with E85 or meth, 320 wouldn't be a problem. But I don't know correction factors blah blah blah... it was using. It's on their dyno database if you are intrested.
2gnt2wrx is online now   Reply With Quote
Old 04-30-2013, 01:11 PM   #20
RIBahler
Scooby Newbie
 
Member#: 326537
Join Date: Jul 2012
Chapter/Region: NWIC
Location: Oregon
Vehicle:
2005 WRX STi Wagon
Crystal Grey Metallic

Default

Quote:
Originally Posted by dburgoon View Post
Awesome! Thanks, how's the tranny holding up?
Look here for the answer.
http://forums.nasioc.com/forums/show....php?t=2489333
RIBahler is offline   Reply With Quote
Old 04-30-2013, 01:23 PM   #21
dburgoon
Scooby Specialist
 
Member#: 310366
Join Date: Feb 2012
Chapter/Region: South East
Location: Ft Myers, FL
Vehicle:
03 vf37'd WRB
Bugeye

Default

Quote:
Originally Posted by RIBahler View Post
Sweet! Maybe mine will pop too so I can justify and sti swap
dburgoon is offline   Reply With Quote
Old 04-30-2013, 01:43 PM   #22
quazimoto
Scooby Guru
 
Member#: 70395
Join Date: Sep 2004
Chapter/Region: MAIC
Location: Da-boonies,Va
Default

Quote:
Originally Posted by RIBahler View Post
It is possible to get 320awhp on a VF43 with a 2.0. Here is proof on my project for your reference.

http://forums.nasioc.com/forums/show....php?t=2413383
Does everyone understand dyno variances and the variables involved with WHP numbers?

OP........stop being fixated on peak whp numbers. You obviously are very naive as far as WHP and the variables involved go considering your posts/responses. The before/after power curve is where it is at,not the peak numbers.
quazimoto is offline   Reply With Quote
Old 04-30-2013, 01:58 PM   #23
RIBahler
Scooby Newbie
 
Member#: 326537
Join Date: Jul 2012
Chapter/Region: NWIC
Location: Oregon
Vehicle:
2005 WRX STi Wagon
Crystal Grey Metallic

Default

Quote:
Originally Posted by quazimoto View Post
Does everyone understand dyno variances and the variables involved with WHP numbers?

OP........stop being fixated on peak whp numbers. You obviously are very naive as far as WHP and the variables involved go considering your posts/responses. The before/after power curve is where it is at,not the peak numbers.
Of course and I agree!
RIBahler is offline   Reply With Quote
Old 04-30-2013, 02:33 PM   #24
BoboTheMonkey
Scooby Specialist
 
Member#: 224615
Join Date: Sep 2009
Chapter/Region: MWSOC
Location: La Crosse, WI
Vehicle:
2004 WRX
San Remo Red

Default

I made nowhere near that, but it was a mustang dyno on 91. With 93 and meth, I would think you could get over 300 on a non mustang dyno fairly easy. Just a question though... Why are you running 850cc injectors with meth? 565's are typically plenty for a vf series turbo and with meth, you need even less headroom.
BoboTheMonkey is offline   Reply With Quote
Old 04-30-2013, 03:41 PM   #25
dburgoon
Scooby Specialist
 
Member#: 310366
Join Date: Feb 2012
Chapter/Region: South East
Location: Ft Myers, FL
Vehicle:
03 vf37'd WRB
Bugeye

Default

Quote:
Originally Posted by quazimoto View Post
Does everyone understand dyno variances and the variables involved with WHP numbers?

OP........stop being fixated on peak whp numbers. You obviously are very naive as far as WHP and the variables involved go considering your posts/responses. The before/after power curve is where it is at,not the peak numbers.
I could care less about peak numbers, I'm more concerned about where I make the power. I know the variables on dyno differences, I build miatas for a living and the numbers we put down on our dyno vary greatly from that of any other dyno, but we still build the fastest specs in the region.

I was just curious as to what numbers I could expect and/or shoot for with the set up I will be using.

I guess I should change my question too, "where will I see my power?" Is that better?

Last edited by dburgoon; 04-30-2013 at 04:07 PM.
dburgoon is offline   Reply With Quote
Reply

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 09:33 AM.


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