Welcome to the North American Subaru Impreza Owners Club Friday March 29, 2024
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > Pre-2002 Factory 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.







* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 03-21-2009, 07:07 PM   #1
j3t
Scooby Newbie
 
Member#: 169815
Join Date: Jan 2008
Default ej20g injector question

Getting my car tuned soon, and wanting to get some new injectors. What is a good direct upgrade for this? Is there a stock fuel rail that is an upgrade for the ej20g? Ive got greytops in now, which from what i hear are stock.

Thanks,
Jet
* Registered users of the site do not see these ads.
j3t is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 03-21-2009, 11:23 PM   #2
rockcrete
Scooby Newbie
 
Member#: 196721
Join Date: Dec 2008
Chapter/Region: VIC
Location: Maple Ridge
Vehicle:
1993 GF8 WRX Wagon
Black

Default

I wouldn't worry too much about the fuel rails. If you want to upgrade injectors, I believe 300ZX ones are the same so there are plenty of aftermarket options around.
rockcrete is offline   Reply With Quote
Old 03-22-2009, 02:31 AM   #3
suberdave
Scooby Specialist
 
Member#: 101865
Join Date: Nov 2005
Chapter/Region: NWIC
Location: Covington, WA
Vehicle:
88 GL-10 STi
silver

Default

dont mess with finding a set of injectors that may fit...

buy a set of phase 2 adapter collars, and then any USDM STI sidefeed injector will fit right in to your rails...

i have these ones and they are awesome...

http://www.fecker.co.uk/scooby/product.php?id=2


-=Subedave=-
www.suberdave.com
suberdave is offline   Reply With Quote
Old 03-24-2009, 04:03 AM   #4
ncarn8
Scooby Specialist
 
Member#: 71419
Join Date: Sep 2004
Default

or, STI yellowtops are 440cc. cheap bolt in upgrade.
ncarn8 is offline   Reply With Quote
Old 03-24-2009, 06:51 AM   #5
RealDealTarheel
Scooby Specialist
 
Member#: 142447
Join Date: Mar 2007
Chapter/Region: AKIC
Location: Not so Fair...banks
Vehicle:
2019 Audi S3

Default

Quote:
Originally Posted by ncarn8 View Post
or, STI yellowtops are 440cc. cheap bolt in upgrade.
Which the stock gray tops are also 440cc........
RealDealTarheel is offline   Reply With Quote
Old 03-24-2009, 03:37 PM   #6
Rei_Akira
Scooby Scammer- Do Not Buy From User
 
Member#: 194555
Join Date: Nov 2008
Chapter/Region: NWIC
Location: Idaho
Vehicle:
1997 GC8 coup
green

Default

while we're talkin about injectors, i have a spare set of Tomei 555cc's out of a SR20, are those a drop in replacement (EG20K).
Rei_Akira is offline   Reply With Quote
Old 03-24-2009, 06:26 PM   #7
sniper512
Scooby Newbie
 
Member#: 189923
Join Date: Sep 2008
Chapter/Region: W. Canada
Location: Cranbrook, BC
Vehicle:
1993 JDM WRX
Black

Default

Okay i have thought for quite sometime that the gray tops are 440s as well but the more I talk to people about them the more I get confused. I know my car come stock with the TD05 and have been told that with the TD05 comes 440s, but lots of people argue with me about it. Does anyone have proof/data that the phase 1 WRX's come with 440s? Rob? I just keep hearing different opinions.
sniper512 is offline   Reply With Quote
Old 03-24-2009, 06:56 PM   #8
rockcrete
Scooby Newbie
 
Member#: 196721
Join Date: Dec 2008
Chapter/Region: VIC
Location: Maple Ridge
Vehicle:
1993 GF8 WRX Wagon
Black

Default

If my memory is right, the WRX injectors are the JECS side feed and the part #'s are on them - I think they might be 0R05

http://www.witchhunter.com/injectordata1.php4

Just remember that flow rate is subjective to fuel pressure and if you're planning on leaning on your motor, send them out and get them flowed if you're not upgrading.

Last edited by rockcrete; 03-24-2009 at 07:04 PM.
rockcrete is offline   Reply With Quote
Old 03-24-2009, 06:57 PM   #9
Rikshaman
Scooby Newbie
 
Member#: 90817
Join Date: Jul 2005
Default

should be the same as supra injectors? 2jz. lol
Rikshaman is offline   Reply With Quote
Old 03-24-2009, 07:21 PM   #10
Rikshaman
Scooby Newbie
 
Member#: 90817
Join Date: Jul 2005
Default

actually, yes. 2jz injectors will work as long as you use a resistor pack.
Rikshaman is offline   Reply With Quote
Old 03-24-2009, 07:38 PM   #11
blkgm8
Scooby Newbie
 
Member#: 184543
Join Date: Jul 2008
Chapter/Region: NESIC
Vehicle:
JDM RHD GM8 Type R
02 6 Speed Bugeye

Default

Quote:
Originally Posted by RealDealTarheel View Post
Which the stock gray tops are also 440cc........
Depends on what bar fuel pressure... The grays are rated flow 370 whereas the yellows flow 440cc at same bar pressure.

Yellows are bigger injectors flow wise than grays.
blkgm8 is offline   Reply With Quote
Old 03-24-2009, 10:59 PM   #12
suberdave
Scooby Specialist
 
Member#: 101865
Join Date: Nov 2005
Chapter/Region: NWIC
Location: Covington, WA
Vehicle:
88 GL-10 STi
silver

Default

Quote:
Originally Posted by rockcrete View Post
I think they might be 0R05
Just looked they are. anyone have numbers on the yellow tops???

-=Suberdave=-
www.suberdave.com
suberdave is offline   Reply With Quote
Old 03-25-2009, 02:32 AM   #13
kleinkid
Scooby Specialist
 
Member#: 27091
Join Date: Oct 2002
Chapter/Region: NWIC
Location: Oak Harbor, Wa.
Vehicle:
2010 STi SE
DGM

Default yellow tops

These yellow tops I have came out of a ej20k intake manifold and they are
OR15.
kleinkid is offline   Reply With Quote
Old 03-25-2009, 05:25 AM   #14
RealDealTarheel
Scooby Specialist
 
Member#: 142447
Join Date: Mar 2007
Chapter/Region: AKIC
Location: Not so Fair...banks
Vehicle:
2019 Audi S3

Default

Quote:
Originally Posted by blkgm8 View Post
Depends on what bar fuel pressure... The grays are rated flow 370 whereas the yellows flow 440cc at same bar pressure.

Yellows are bigger injectors flow wise than grays.
What bar pressure are the gray's rated at 370? Everything I've ever read says they're 440's. I haven't sent my spare set to be flow tested because well, honestly I don't really care, but I'd like to see your data.
RealDealTarheel is offline   Reply With Quote
Old 03-25-2009, 08:51 AM   #15
Jaxx
Scooby Guru
 
Member#: 177
Join Date: Aug 1999
Chapter/Region: NWIC
Location: Austin, Texas, USA
Vehicle:
The 93 W/EJ20K-sold
Subaru-less :(

Default

agggg misinformation

greys 440 cc at 3 bar
yellow 480 cc at 3 bar
all the other test you see are at 3 bar example: blue usdm wrx top feed 440cc at 3 bar

this is from results at RC engineering

those bad numbers (370,390,440) are a 2.5 bar (which is used in au/nz) but have no idea why

sr20 injectors will not drop in they are phase 2 and need the rail adapter
Jaxx is offline   Reply With Quote
Old 03-25-2009, 09:57 AM   #16
sniper512
Scooby Newbie
 
Member#: 189923
Join Date: Sep 2008
Chapter/Region: W. Canada
Location: Cranbrook, BC
Vehicle:
1993 JDM WRX
Black

Default

Awesome definitive. Me likes.
sniper512 is offline   Reply With Quote
Old 03-25-2009, 11:29 AM   #17
Rei_Akira
Scooby Scammer- Do Not Buy From User
 
Member#: 194555
Join Date: Nov 2008
Chapter/Region: NWIC
Location: Idaho
Vehicle:
1997 GC8 coup
green

Default

thanks Jaxx, much appreciated.
Rei_Akira is offline   Reply With Quote
Old 03-26-2009, 02:33 PM   #18
thad
Scooby Newbie
 
Member#: 176616
Join Date: Apr 2008
Location: fresno
Vehicle:
1994 impreza
white

Default

Ok, I may be way off on this one, but since the EJ20G FPR is set somewhere around 2 bar, doesn't that mean that the Gray tops will not even break the 370cc mark in use on a stock motor.
I may be assuming something incorrectly.
thad is offline   Reply With Quote
Old 03-26-2009, 03:09 PM   #19
rob
n00b Moderator
Moderator
 
Member#: 811
Join Date: Jan 2000
Location: WA
Vehicle:
2000 RS-Ej20G
It tastes like burning

Default

You are. Stock fuel pressure is 3 bar.
rob 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

Similar Threads
Thread Thread Starter Forum Replies Last Post
In need of EJ20G injectors Millencolin! Private 'Wanted' Classifieds 2 03-17-2006 01:35 PM
wtb ej20g injector silvialost Private 'Wanted' Classifieds 0 11-03-2005 03:00 PM
ej20g injector problems smacksube Subaru Conversions 4 01-13-2004 03:12 PM
injector question on EJ20G 99WRXEJ20 Subaru Conversions 1 12-11-2003 03:24 AM
EJ20G Injectors NinNin Normally Aspirated with bolt-on Forced Induction Powertrain 5 01-30-2002 03:37 PM

All times are GMT -4. The time now is 10:17 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2024 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.

When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission
Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.