Welcome to the North American Subaru Impreza Owners Club Wednesday February 10, 2016
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > Normally Aspirated with bolt-on Forced Induction 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 07-26-2004, 05:47 PM   #1
Hitokiri
Scooby Specialist
 
Member#: 2604
Join Date: Oct 2000
Chapter/Region: NESIC
Location: CA
Vehicle:
1999 2.5RSt
RBP

Default RC injectors "For air assist" = ??

ok so in the prossess of finding injectors for our baby eating RST, I have some questions

it has a my00 manifold so air assist is there.

I was told orginally by a few people that its all good and RC makes the right injector to hook up fine.....

at that I almost did a backflip on the spot because I know finding injectors for these manifolds is a notorious PITA and usually forces people to buy 99 manifolds rather than rig up some crazy fabbed manifold mounting.

so I called RC today (after we ordered some injectors from a distrubuter that claimed they had air assist ones in stock that would fit our rails) and they told me that they weren't sure how their 750's were going to work out with the longer air assist channels. "maybe if you blocked off air assist?" they said. I am now at sort of a loss/ super happy that I have a '99...

so all you MY00 RS people that have injectors please through in your experience.

I assume that the air assist is vac driven or something and doen't require you to retain the stock ECU to run it. It better not cause the stock ECU is going bye bye.

??

Todd
* Registered users of the site do not see these ads.
Hitokiri is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 07-26-2004, 06:32 PM   #2
benjaminetanyahoo
*** Banned ***
 
Member#: 41300
Join Date: Aug 2003
Chapter/Region: Tri-State
Location: Midtown West (Lincoln Center)
Vehicle:
2000 New York
MTA

Default

it's a 2002 manifold by the way...
benjaminetanyahoo is offline   Reply With Quote
Old 07-26-2004, 07:39 PM   #3
LegacyJones
Scooby Specialist
 
Member#: 48791
Join Date: Nov 2003
Chapter/Region: NESIC
Location: MA
Vehicle:
02 bugeye
wagon

Default

you need an injector adpt. Search under the name joeT or phatsuby. they are the ones helping me out. There is a place that will make and mill them down for ya to fit the manifold.

Jason
LegacyJones is offline   Reply With Quote
Old 07-27-2004, 03:16 AM   #4
PHATsuby
Scooby Guru
 
Member#: 13617
Join Date: Dec 2001
Chapter/Region: MWSOC
Location: MN
Vehicle:
2001 Legacy GT back
to stock is a project too

Default

you do know that 99 manifolds will take wrx injectors and Sti topfeeds without modification?

this is what others have said.

otherwise as LegacyJones mentioned injector adapters will work and will save you trying to seal out your air assist.

Ben
PHATsuby is offline   Reply With Quote
Old 07-27-2004, 08:21 AM   #5
Hitokiri
Scooby Specialist
 
Member#: 2604
Join Date: Oct 2000
Chapter/Region: NESIC
Location: CA
Vehicle:
1999 2.5RSt
RBP

Default

good point FutureSTIer! It is a 02 manifold.. I don't know why that slipped my mind! lol
Hitokiri is offline   Reply With Quote
Old 07-27-2004, 08:42 AM   #6
Elliot
Scooby Specialist
 
Member#: 12732
Join Date: Nov 2001
Location: Dorado Puerto Rico
Vehicle:
2000 2.5RS-T
Titanium silver

Default

i have a 2002 with wrx injectors on the factory manifold and no problems!! just find the right o-rings!!
Elliot is offline   Reply With Quote
Old 07-27-2004, 10:10 AM   #7
benjaminetanyahoo
*** Banned ***
 
Member#: 41300
Join Date: Aug 2003
Chapter/Region: Tri-State
Location: Midtown West (Lincoln Center)
Vehicle:
2000 New York
MTA

Default

Yeah just make sure the o-rings don't have tears in them :-P
benjaminetanyahoo is offline   Reply With Quote
Old 07-27-2004, 10:34 AM   #8
Hitokiri
Scooby Specialist
 
Member#: 2604
Join Date: Oct 2000
Chapter/Region: NESIC
Location: CA
Vehicle:
1999 2.5RSt
RBP

Default

lol yeah seriously huh? Well have to get more actually cause we are missing one of TJs car ..... lol that was rediculous.

how is the car BTW?

Todd
Hitokiri is offline   Reply With Quote
Old 07-27-2004, 10:38 AM   #9
Hitokiri
Scooby Specialist
 
Member#: 2604
Join Date: Oct 2000
Chapter/Region: NESIC
Location: CA
Vehicle:
1999 2.5RSt
RBP

Default

elliot - so you just stuffed them in there with the right sized 0 rings? and the air assist is just blowing in?

hmm.

I pmed Joet and am going to call Yoshiro about thouse adaptors later today. I will update you elliot on what he recomends. I should have checked if the 00 manifold was identical to the o2 manifold.


Todd
Hitokiri is offline   Reply With Quote
Old 07-27-2004, 10:38 AM   #10
benjaminetanyahoo
*** Banned ***
 
Member#: 41300
Join Date: Aug 2003
Chapter/Region: Tri-State
Location: Midtown West (Lincoln Center)
Vehicle:
2000 New York
MTA

Default

Good, I missed getting it flooded by twenty minutes damn it.
benjaminetanyahoo is offline   Reply With Quote
Old 07-27-2004, 03:08 PM   #11
RK Performance
Scooby Specialist
 
Member#: 19069
Join Date: May 2002
Chapter/Region: RMIC
Location: Thornton CO
Vehicle:
2005 Impreza WRX
2002 RS, RIP

Default

Quote:
Originally Posted by Elliot
i have a 2002 with wrx injectors on the factory manifold and no problems!! just find the right o-rings!!
Do you have details on this?

-Ryan
RK Performance is offline   Reply With Quote
Old 07-27-2004, 05:33 PM   #12
Hitokiri
Scooby Specialist
 
Member#: 2604
Join Date: Oct 2000
Chapter/Region: NESIC
Location: CA
Vehicle:
1999 2.5RSt
RBP

Default

ok so after talking with Yoshio and understanding a little better what these "adaptors" are going to do, I am not sure if we are going to go with it, but we may not have a choice.

It seems to me that the problem of the injector nozzle not sitting flush with the exit from the manifold into the head remains even with the "adaptors". What the adaptors essentially do is replace the green air assist box with a CNC piece that has an oring on the bottom as to insure a complete seal from the air assist rail. The adaptors also space the injectors up such that the stock rails (that sit slightly higher due to the addition of the air assist rail) fit tightly and seal well with the tops of the injectors.

PIC: adaptor

so while these adaptors do solve the problem of air assist, and do slve the problem of the higher rail itself, it does not solve the problem (as far as I can tell) of the spray pattern hitting the walls of the adaptor and dripping out unatomized into the head. While I am sure this method works, it is definitly not optimal as far as atomization is concerned. The oly way to do it right would be to modify the rail so the injector sits at the opening into head head, and modify the top feed fuel rail so it seals nicely in the lower position onto the injector.

phew!

anyways - please respond everyone.

Todd
Hitokiri is offline   Reply With Quote
Old 08-06-2004, 12:59 PM   #13
maxiav
Scooby Specialist
 
Member#: 40413
Join Date: Jul 2003
Vehicle:
2001 BRP RS-T EJ257
Link'd - 252WHP 274WTQ

Default

any news on this issue???... I don't think the adapter will keep the spray pattern.
maxiav is offline   Reply With Quote
Old 08-06-2004, 02:15 PM   #14
latinskllz
Scooby Specialist
 
Member#: 3461
Join Date: Jan 2001
Chapter/Region: South East
Location: orlando, fl, USA
Vehicle:
1998 BMW M3 Coupe
Estoril Bleau

Default

well the RC Injector is a conical spray pattern I was dealing with RC Engineering about the same issue. I sent a stock RS Injector from a MY02 Manifold and determined that the conical spray does not hit the injector port walls to cause fueling problems with correct atomization. How have you determined that it doesn't solve the correct atomization.

If you are using an aftermarket engine management system or still using your MY99 ECU, then don't use the injector assist system...find some vaccumm caps to plugs the ports on the manifold and just buy RC Engineering Injectors that suit your setup along with the RC Injector Clips and just splice into your factory clips for signal.

FYI, the technician who worked on my injectors at RC Engineering and who helped me vastly is Wayne San Miguel...You can ask for him as he was very knowledgeable and learned a bit from me sending my stock manifold and RC/Subaru Injectors for Testing.
latinskllz 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
WTT: rc injectors for top feed injectors WRB Kid SCIC Private Classifieds 2 03-20-2009 12:01 PM
CA wtt 720cc rc injectors for your 650cc injectors wrx13oy Private 'For Sale' Classifieds 21 11-08-2005 04:03 AM
RC Injectors vs. STi? ScoobieSnaX Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 5 03-22-2002 12:40 PM
RC injector help. TaiChih Normally Aspirated with bolt-on Forced Induction Powertrain 17 03-16-2002 09:28 PM
RC Injectors alfriedesq Normally Aspirated with bolt-on Forced Induction Powertrain 19 01-12-2002 07:12 PM

All times are GMT -4. The time now is 10:00 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2016 Axivo Inc.
Copyright ©1999 - 2016, North American Subaru Impreza Owners Club, Inc.