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Old 03-18-2013, 04:47 PM   #1
SteamSpeed.com
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Default JDM on USDM fuelrails?

Do you know which JDM STI version would have compatible fuel rails with USDM top feed models?

This one looks like a top feed fuel rail, but I am not sure what the GDB version WRX came with.
Kinugawa Fuel Rail High Flow SUBARU JDM STI Spec C GDB EJ20 EJ25

These seem like side feed fuel rails..

Kinugawa Fuel Rail High Flow SUBARU WRX STI GC8 GF8 V3 V4 EJ20

Kinugawa Fuel Rail High Flow SUBARU WRX STI GC8 GF8 V5 V6 EJ20
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Old 03-19-2013, 10:50 AM   #2
Vlad
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Its best to ask them. The rev A spec C had TGV's (V7).
This may be a reason for which they include EJ25 in the same description.
This would mean that it fits USDM, but not JDM V8,9.
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Old 03-19-2013, 12:04 PM   #3
kellygnsd
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I think even the JDM top feed rails have different mount hole location so it wouldn't be a direct bolt up. There are plenty of manufacturers that make top feed rail for the USDM application, why not use parts that fit?
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Old 03-19-2013, 01:46 PM   #4
fastnoypi
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JDM Sti's with long runner manifolds (no tgv risers) must use adapters when using aftermarket usdm rails. Couple of members on the board make them custom.

example http://forums.nasioc.com/forums/show...6#post34054036
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Old 03-21-2013, 10:02 PM   #5
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Thanks for the feedback.

It will probably be best to stick a US specific fuel rails unless the customer has a JDM intake/TGVs.
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Old 04-03-2013, 08:48 PM   #6
sense of nature
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I'm using these : Kinugawa Fuel Rail High Flow SUBARU JDM STI Spec C GDB EJ20 EJ25
w/ my 2005 STi top feed conversion set up/manifold.. fits like a charm
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Old 04-03-2013, 09:18 PM   #7
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Quote:
Originally Posted by sense of nature View Post
I'm using these : Kinugawa Fuel Rail High Flow SUBARU JDM STI Spec C GDB EJ20 EJ25
w/ my 2005 STi top feed conversion set up/manifold.. fits like a charm
Interesting, would that be the same rails for the 2L since you've done the conversion?
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Old 04-03-2013, 10:27 PM   #8
sense of nature
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Quote:
Originally Posted by ogboot View Post

Interesting, would that be the same rails for the 2L since you've done the conversion?
Yes , as long as top feed tgv's r used the rails bolt right up .
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Old 04-03-2013, 10:40 PM   #9
ogboot
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Quote:
Originally Posted by sense of nature View Post

Yes , as long as top feed tgv's r used the rails bolt right up .
Sweet, i've been wanting to get these rails for my ej205.
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Old 07-22-2014, 09:16 PM   #10
gianttcr
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Sorry to pull up old thread. Sense, you wouldnt happen to know the ORB threading IN the rail would you? I'm doing hard SS lines and want to run a 90 swivel to have clearance, but both the ORB6 and ORB8 are the wrong size. It is something in between. Maybe 12x1.25? Anyway, thanks.
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