Perth-WRX.com  

Go Back   Perth-WRX.com > Technical > Mechanicals
Register Diddy Kart ArticlesAll AlbumsBlogs FAQ Members List Calendar Search Today's Posts Mark Forums Read

ULTREX
Welcome to Perth-WRX, click here to register!

Like Tree6Likes

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 13-11-2015, 02:41 PM
VUSSUTE's Avatar
Sir AntiLag
Member
 
Join Date: Jan 2010
Location: SOR Bogan
Posts: 433
Thanks: 22
Thanked 15 Times in 12 Posts
VUSSUTE at standard level
Default GC8 era EJ207 block power limit

So, i have ordered myself a set of headers and a process west intercooler.
My V6 Sti already has TBE 3" exhaust and an autronic ECU and 500hp fuel pump. Now the last thing im stuck on is the damn turbo.

Im looking at either a VF34, or a Blouch 20G. The 20G would give me more power, but being a stock EJ207 block (its a JDM engine) im unsure if I will be taking it to unsafe limits.

Im aiming for 200kw @ wheels, but later would like to push it a little higher once i get bigger injectors.

I guess my question is, what is the maximum "Safe' power level on a GC8 era EJ207.
__________________
STi Ver 6 | 2.1L Stroker | 418whp | 11.5 @ 199kph |

Not fast enough dammit!
Reply With Quote
  #2  
Old 13-11-2015, 02:54 PM
dnbosiris's Avatar
STI Master
Member
 
Join Date: Mar 2013
Location: Perth
Posts: 758
Thanks: 114
Thanked 24 Times in 22 Posts
dnbosiris at standard level
Default

I've read anywhere from 400 to 500hp at the wheels for an unopened 207 circa 2002 (forged pistons, semi closed deck). Maybe a tad less for the open deck version of the 2l from that era.... Also thats American dyno though so take a bit more off.
Reply With Quote
  #3  
Old 13-11-2015, 03:43 PM
nick73's Avatar
Subaru Tech Division
Member
 
Join Date: Feb 2011
Location: cubicle 2
Posts: 1,408
Thanks: 139
Thanked 84 Times in 80 Posts
nick73 knows their stuff
Default

Did the JDM 207's have forged pistons?

I thought only the Oz one had forgies.
__________________
Bye bye betty blue. Hello F6.
Reply With Quote
  #4  
Old 13-11-2015, 04:02 PM
VUSSUTE's Avatar
Sir AntiLag
Member
 
Join Date: Jan 2010
Location: SOR Bogan
Posts: 433
Thanks: 22
Thanked 15 Times in 12 Posts
VUSSUTE at standard level
Default

as far as im aware, the JDM motors did not have forged pistons.
__________________
STi Ver 6 | 2.1L Stroker | 418whp | 11.5 @ 199kph |

Not fast enough dammit!
Reply With Quote
  #5  
Old 13-11-2015, 04:09 PM
Brett Allan's Avatar
Sign me up!
Subaru Tech Division
Member
 
Join Date: Jan 2011
Location: NOR scum
Posts: 1,410
Thanks: 48
Thanked 40 Times in 38 Posts
Brett Allan knows their stuff
Default

Safe power figure without a built motor I would be inclined to say around 220kw @hubs.

I'm at 250kw @ hubs on e85 and that's on a pretty safe 1.5 Bar tune.

Mine is a GD 207 though.

using the Perth-WRX mobile app
amtrapid likes this.
__________________
2005 WRX STI
Reply With Quote
  #6  
Old 13-11-2015, 07:17 PM
dnbosiris's Avatar
STI Master
Member
 
Join Date: Mar 2013
Location: Perth
Posts: 758
Thanks: 114
Thanked 24 Times in 22 Posts
dnbosiris at standard level
Default

Quote:
Originally Posted by nick73 View Post
Did the JDM 207's have forged pistons?

I thought only the Oz one had forgies.
Yes they did, up until my02 ("version 7"). My03 onwards ("version 8") were hypereutectic. Whereas oz kept them until my05

Last edited by dnbosiris; 13-11-2015 at 07:19 PM.
Reply With Quote
The Following User Says Thank You to dnbosiris For This Useful Post:
nick73 (13-11-2015)
  #7  
Old 13-11-2015, 07:50 PM
Potty Training Scoobie Noobie
Member
 
Join Date: Mar 2011
Location: Australia
Posts: 58
Thanks: 0
Thanked 0 Times in 0 Posts
deejw is unrated
Default

200 atw is going to be your limit, over that and big end timebomb.
Reply With Quote
  #8  
Old 13-11-2015, 08:14 PM
VUSSUTE's Avatar
Sir AntiLag
Member
 
Join Date: Jan 2010
Location: SOR Bogan
Posts: 433
Thanks: 22
Thanked 15 Times in 12 Posts
VUSSUTE at standard level
Default

well i guess thats just an excuse to get a built motor....
If that was the case, is it worth building the GC8 207 with full forged internals....
Or if im not planing on more than 250awkw just get the GC8 207 built... or will I require a semi closed deck from a later model. (GC8 207's are open deck)

Im kind of torn between a 20G and a VF34...
Arggggg decisions!
__________________
STi Ver 6 | 2.1L Stroker | 418whp | 11.5 @ 199kph |

Not fast enough dammit!
Reply With Quote
  #9  
Old 13-11-2015, 11:07 PM
astralex's Avatar
Subaru Tech Division
Member
 
Join Date: Jan 2007
Location: 20,000 Leagues Under the Sea
Posts: 1,661
Thanks: 12
Thanked 42 Times in 37 Posts
astralex knows their stuff
Send a message via MSN to astralex
Default

Take a look at Ross' build thread for ideas. Pretty sure he is using his Version 6 block still. Could always go for a EJ20G too.
__________________
Air is for pussies.
Reply With Quote
The Following User Says Thank You to astralex For This Useful Post:
Dragon_wrx (25-06-2018)
  #10  
Old 14-11-2015, 06:34 AM
munya's Avatar
Sign me up!
bug love
 
Join Date: Dec 2007
Location: In a donga
Posts: 1,713
Thanks: 64
Thanked 17 Times in 16 Posts
munya at standard level
Send a message via MSN to munya Send a message via Skype™ to munya
Default

Quote:
Originally Posted by astralex View Post
Take a look at Ross' build thread for ideas. Pretty sure he is using his Version 6 block still. Could always go for a EJ20G too.
Ross changed the v6 207 which is open deck to the 02 semi-closed then meant mental with parts
astralex and amtrapid like this.
__________________
race tape y pipe running .05 bar till spares turn up.
Reply With Quote
Reply

Tags
block, ej207, era, gc8, limit, power

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
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
anyone got a GC8 power steering pump? jedi_luke General Subaru Discussion 0 23-02-2007 01:10 PM
WTB Power FC for GC8 Elrico Wanted 0 04-02-2007 10:03 PM
Power FC suit Early pre96 GC8 or RS Liberty Mister Two For Sale 3 27-12-2006 12:24 PM
WTB: Power fc to suit gc8 my 99 wrx_on_boost Wanted 0 26-12-2006 07:22 PM
FS: Apexi Power FC ECU w/ Hand Controller (brand new) to suit 98 GC8 Thodd For Sale 0 25-09-2006 01:08 PM



Welcome to Perth-WRX, click here to register!

All times are GMT +8. The time now is 12:53 PM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO