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Fuel rail differences v3/4 compared to v5/6?

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Old 01 January 2010, 03:02 PM
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scoobykarl
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Default Fuel rail differences v3/4 compared to v5/6?

Hi.Would like to know the differences apart from style of side feed injectors between phase 1.5- v3/4 inlet manifold and the phase 2 -v5/6 inlet manifold.For example,could a fuel rail meant for a phase 2 manifold be fitted to a phase 1.5?Thanks
Old 01 January 2010, 03:09 PM
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Beastra
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Here's my Phase 1.5 manifold and fuel rails;




Not too sure on the difference apart from the style/fitment of the injectors.

Here's the V5/V6 Fuel rails;

http://cgi.ebay.co.uk/SUBARU-IMPREZA...item1c0b3b26be

Last edited by Beastra; 01 January 2010 at 03:13 PM.
Old 01 January 2010, 03:19 PM
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scoobykarl
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Originally Posted by Beastra
Here's my Phase 1.5 manifold and fuel rails;




Not too sure on the difference apart from the style/fitment of the injectors.

Here's the V5/V6 Fuel rails;

SUBARU IMPREZA GC8 WRX STi V5 V6 Fuel Rail High Flow on eBay (end time 09-Jan-10 04:21:50 GMT)
Thank you Beastra.These are the type of rails i,ve been looking at but wondered as i have the later style side feeds,ie,v5/6,would the v5/6 fuel rails fit my phase 1.5 manifold without the use of adaptors on 3/4 rails
Old 01 January 2010, 05:34 PM
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joz8968
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3/4's bolt pattern is in-line... 5/6's staggered offset. Also I think the 5/6 is shorter (across the engine) so the bolts holes wouldn't 'reach', even if they were the same pattern.

You don't need to use the 5/6 rails on the 3/4 manifold (if indeed they actually fit?). You simply buy the Carl Davey fitting kit (c.30 quid) to fit ph.2 injectors into ph.1/1.5 rails...

Rather pervervesly, fitting ph.2 inj. (with that kit) into ph.1/1.5 rails is actually easier than fitting the 'correct' ph.1/1.5 inj.!!

Last edited by joz8968; 01 January 2010 at 05:46 PM.
Old 01 January 2010, 05:57 PM
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Originally Posted by scoobykarl
...without the use of adaptors on 3/4 rails
Oops, sorry - overlooked that.
Old 01 January 2010, 06:32 PM
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Cheers Joz.I just wondered how different the fittings on the base of the rails were,i.e,v5/6 being compatible with the phase 1.5 manifold.Thanks for everyones help
Old 01 January 2010, 06:57 PM
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Beastra
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Originally Posted by scoobykarl
Thank you Beastra.These are the type of rails i,ve been looking at but wondered as i have the later style side feeds,ie,v5/6,would the v5/6 fuel rails fit my phase 1.5 manifold without the use of adaptors on 3/4 rails
I don't think they will due to the position of the injector fixings And rail fixings.

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Old 14 April 2014, 07:56 AM
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LeOke
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the Carl Davey fitting kit is sold out. are there any other ideas?
Old 14 April 2014, 08:21 AM
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banny sti
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Originally Posted by LeOke
the Carl Davey fitting kit is sold out. are there any other ideas?
Alyn at AS Performance supplies the carl davey stuff now but his closed at the moment
Old 14 April 2014, 08:38 AM
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bmw730i
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There a fitting kit on ebay £30
Old 14 April 2014, 08:56 PM
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joz8968
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--

Last edited by joz8968; 14 April 2014 at 08:58 PM.
Old 14 April 2014, 09:11 PM
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CDF Racing
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lateral performance stock adapter kits mate
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