Australian Liberty Owners Club
Fuel Rail Setup
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Re: Fuel Rail Setup
by AJ RS » Tue Sep 01, 2015 4:22 pm
440XT mate. But they come with a 15psi actuator and it was recommended to me that I go smaller so that we can use boost control to go further. Im running the Turbosmart IWG75 with a 12psi setting. 12 in I mode. 15 in S. and 18 in S# mode. Going to update my build thread shortly.
92 RS Liberty wag -SOLD
03 WRX Hatch -SOLD
12 WRX STI Hatch -SOLD
08 Liberty GT-B Tuned by STI
07 Jeep JKU Rubicon
70 Jeep CJ5
10 Honda CRF450x
03 WRX Hatch -SOLD
12 WRX STI Hatch -SOLD
08 Liberty GT-B Tuned by STI
07 Jeep JKU Rubicon
70 Jeep CJ5
10 Honda CRF450x
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AJ RS - Posts: 143
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Re: Fuel Rail Setup
by bigBADbenny » Wed Sep 02, 2015 7:48 am
Ime, boost will always vary slightly due to various combinations of gearing/revs/speed.
But a well sorted and tuned setup should be able to stay within one or two psi of the intended target.
Any more than that would cause me concern, indeed my btssm is configured with an alarm to warn me
Any progress with your cars?
But a well sorted and tuned setup should be able to stay within one or two psi of the intended target.
Any more than that would cause me concern, indeed my btssm is configured with an alarm to warn me
Any progress with your cars?
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bigBADbenny - Posts: 10420
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Re: Fuel Rail Setup
by cynner » Tue Sep 08, 2015 1:41 pm
My intake manifold is currently being prepped (fuel rails, etc) ready to drop on top of the engine... then it's in the car, and tune time!
Snapped a few pics of what my mechanic is doing to the fuel rails...
Basically the housing that the factory fuel pressure regulator fits to is attached to two pipes on the fuel rail. There is a hole in the top pipe that enters the fuel pressure reg housing (you can see it when you look up inside the housing when it is off the car).
The simplest setup seems to be putting a bung in the fuel pressure reg housing, and blocking off that lower rail (crimping it, welding it and also putting a rubber stopper on it). Therefore this whole lower section is not used. Alternatively the entire piece could be cut off - but that would require threading a new hose fitting onto the rail.
My only concern is that the fuel reg housing will get fuel sitting in it... (possibly not moving, so could get hot?). Although as the fuel line is pressurised I think the fuel will continue to move around.
Snapped a few pics of what my mechanic is doing to the fuel rails...
- fuel-rail-mod.jpg (190.34 KiB) Viewed 2267 times
Basically the housing that the factory fuel pressure regulator fits to is attached to two pipes on the fuel rail. There is a hole in the top pipe that enters the fuel pressure reg housing (you can see it when you look up inside the housing when it is off the car).
The simplest setup seems to be putting a bung in the fuel pressure reg housing, and blocking off that lower rail (crimping it, welding it and also putting a rubber stopper on it). Therefore this whole lower section is not used. Alternatively the entire piece could be cut off - but that would require threading a new hose fitting onto the rail.
My only concern is that the fuel reg housing will get fuel sitting in it... (possibly not moving, so could get hot?). Although as the fuel line is pressurised I think the fuel will continue to move around.
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cynner - Posts: 462
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Re: Fuel Rail Setup
by cynner » Wed Sep 09, 2015 6:54 pm
And a sketch... (I'm not 100% sure if I drew the inlet/outlet is the right way - the mechanic will sort it though)
- paralel-setup.JPG (62.65 KiB) Viewed 2249 times
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cynner - Posts: 462
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Re: Fuel Rail Setup
by kiwigene » Wed Sep 09, 2015 9:03 pm
You wanna check your injectors. Looks like the right side is squirting more than the left... 
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Gene
Gene
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kiwigene - -stickered-
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Re: Fuel Rail Setup
by cynner » Wed Sep 09, 2015 10:06 pm
kiwigene wrote:You wanna check your injectors. Looks like the right side is squirting more than the left...
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cynner - Posts: 462
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Re: Fuel Rail Setup
by HardwareBoB » Wed Sep 09, 2015 10:41 pm
I'm thinking about these...
http://forums.nasioc.com/forums/showthr ... ?t=2503824
look the goods, and are pretty cheap, considering.
Just looking into the AVCS clearance issues.
http://forums.nasioc.com/forums/showthr ... ?t=2503824
look the goods, and are pretty cheap, considering.
Just looking into the AVCS clearance issues.
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HardwareBoB - Posts: 1579
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