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Old 10-04-2012, 10:52 PM   #1
fox_212
Scooby Newbie
 
Member#: 322902
Join Date: Jun 2012
Chapter/Region: NWIC
Location: Bellingham, WA
Vehicle:
2003 16G-XT'd WRX
Silver

Default injector o-ring question

Hey everyone,

I'm installing DW 650cc injectors along with other stage 3 parts, and I have a question about the o-rings: The stock injectors have a "o-ring"/spacer thing just below the upper o-ring (the fuel rail one). Its got kind of a u-shaped cross section. Google stock wrx injectors and you will see them.

My DW injectors came with just a thicker o-ring where the spacer thing was on the stock injectors. The pics of them on rallysportdirect.com show the o-rings clearly. Which do I use, thicker o-rings or spacer things? The DW injectors have a slightly longer body, and the o-ring they came with is shorter than the spacer, which makes them just about the same length as the stock injectors with the spacer. I'm leaning toward the o-rings that came with the new injectors at this point.

thanks very much for the help

Last edited by fox_212; 10-04-2012 at 11:14 PM.
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Old 10-05-2012, 12:01 AM   #2
JRsleeper
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Member#: 94791
Join Date: Aug 2005
Chapter/Region: NESIC
Location: North Branford, CT
Vehicle:
2002 WRX wagon WRB
Ver 8 EJ207 4.44's

Default

It's hard to read and understand what you really mean.

3 o-rings per injector
Small at the top
Grooved in the middle (lower them the upper)
Fat at the bottom.

Pics of what you have would help.

Regarding injector physical size.

Light blue and pinks fit the 02-05 rails perfect providing nobody bent the fuel rails during removal.

I believe the 06 and up top feed Dark blues are slightly shorter in length.

Last edited by JRsleeper; 10-05-2012 at 12:07 AM.
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Old 10-05-2012, 12:30 AM   #3
fox_212
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Member#: 322902
Join Date: Jun 2012
Chapter/Region: NWIC
Location: Bellingham, WA
Vehicle:
2003 16G-XT'd WRX
Silver

Default

Ya, sorry for being confusing...here is a pic. Left is DW 650cc, with middle o-ring. Right is stock injector, with spacer thing.

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Old 10-05-2012, 08:03 AM   #4
fastnoypi
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Member#: 6886
Join Date: May 2001
Chapter/Region: Tri-State
Vehicle:
MY01 EJ207 HTA35r
nothing to see, i'm stock

Default

you can use either one, its to seal out dust, etc from getting to the top o-ring when seated in the rail.
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Old 10-05-2012, 11:10 AM   #5
fox_212
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Member#: 322902
Join Date: Jun 2012
Chapter/Region: NWIC
Location: Bellingham, WA
Vehicle:
2003 16G-XT'd WRX
Silver

Default

Ok, thanks for the confirmation, thats what I was thinking.

Whoa, 4-digit member number! nasioc OG haha Thanks for the help
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