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Old 03-21-2009, 12:08 PM   #1
steve
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Default fuel rail question?

I'm slowly picking up the final parts for my GT30 build.
So far I have the Nismo 740cc injectors, but I'm debating on what to do with the fuel rails. The oem GBOD's are a pain in the ass, and another member recommended going with an aftermarket rail like the Perrin, or APS.

Now here's where the questions come in.
First off, is he correct in his recommendation?
Stock rails have been given a bad rap due to their poor fuel feed ability. Also, they suck to work around. Aftermarket rails would give me the opportunity to solve both of those issues.

The next question.
Is it worth spending 25% more for the APS rail?
I love APS gear, as it is the best out there for our cars. But $400+ is a lot of cash when you consider the Perrin's are around $300.

What you say VIC?
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Old 03-21-2009, 12:31 PM   #2
GlobalWaste
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APS isn't the most expensive stuff out there, but Perrin is around the same price as Agency Power... If you wanted, you could spend 250% more (then Perrin) and get Lachute's kit http://lachuteperformance.com/uploads/0/8/4/196.jpg but it always seems like people are asking for it when they buy the cheapest parts they can find, especially on something that actually requires a bit of R&D to produce.

I've heard a couple rumours about the Perrin's having leak issues over time and I know APS makes some pretty badass products.... Just get the APS, it'll make Jason jealous.
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Old 03-21-2009, 12:35 PM   #3
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That's what I was thinking too alarmpull.
The APS stuff just won't let me down. Plus, it's not like another $100 is going to kill the budget, with what I've spent already.


And it will allow me to run a larger injector in the future a lot easier, since I know the 740cc are a bit small for my final goal. If it costs me a bit more, and saves me install time and heartache the next time around, it's well worth it.



edit: I just checked out the Rocket rails. Anyone know if those are still being offered?
I'd usually just call Rocket direct, but they're closed today.
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Old 03-21-2009, 12:40 PM   #4
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alarmpull
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Old 03-21-2009, 01:10 PM   #5
Splinter
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FWIW I chose to go with the OEM rails, but split them into parallel feeds with a fuel distribution block.

Cheap, simple, effective.

Russell makes generic blocks, you can probably by them off the shelf at mopac.
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Old 03-21-2009, 01:31 PM   #6
Drakar
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Aeromotive FTW, I got those top feed rails and all the parts plus a yblock and a nice AFPR to complete the setup, let me find the part numbers, but this setup is the king **** and it's custom, which is what your car needs


AEI-13101 FUEL PRESSURE REGULATOR 1 $139.95
AEI-14134 SUBARU FUEL RAIL 1 $179.95
EAR-300108ERL -8 ST. AUTO-FIT 1 $31.52
EAR-309108ERL -8 90 DEGREE AUTO-FIT 2 $35.90
EAR-318008ERL -8 180 DEGREE AUTO-FIT 2 $45.90
EAR-985008ERL -8AN TO -8 O-RING (3/4-16) 6 $59.28
EAR-985081ERL -8AN TO -10 O-RING (7/8-14) 2 $25.76
RUS-650410 BILLET Y BLOCK 1 $20.69


All I need now to complete it is a nice little surge tank and ill be set. (but thats WAY later)

but I def recommend the Aeromotive cause you can tailor it to what you need and your not stuck with parts in a kit, you can build it to suit your needs. I originally did mine to get rid of the stock leaky rails and go with something that will allow for major upgrades in the future, plus it turns it from a series setup to parrallel.


Oh and my setup is topfeed (which you might want to convert) or there is an identical rail from Aeromotive that is for sidefeeds as well.


Hypa when I pick up my car early next week I can stop by and show you the rails and so on.

Last edited by Drakar; 03-21-2009 at 01:54 PM.
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Old 03-21-2009, 01:43 PM   #7
007WRX
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I do believe Perrin rails tend to leak after a certain amount of time. I remember Patr saying something about them in mannslayer's thread.
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Old 03-21-2009, 09:15 PM   #8
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i was once told (can't remember who) that fuel rails are only recomended when going rotated but i think there is one guy here who has an axis block w/ gt35r setup that is still running oem fuel rails without any issues.

i have the perrin ones and they are working fine for me without any leaks and certainly no fuel starvation issues. they look great and you can route your fuel lines however you
please.
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Old 03-21-2009, 09:23 PM   #9
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Quote:
Originally Posted by kuldud View Post
i was once told (can't remember who) that fuel rails are only recomended when going rotated but i think there is one guy here who has an axis block w/ gt35r setup that is still running oem fuel rails without any issues.

i have the perrin ones and they are working fine for me without any leaks and certainly no fuel starvation issues. they look great and you can route your fuel lines however you
please.
i was wrong about the one guy here with the rotated setup running oem rails. i am not sure what he is running but i was not stock.
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Old 03-22-2009, 02:54 AM   #10
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Quote:
Originally Posted by kuldud View Post
i was wrong about the one guy here with the rotated setup running oem rails. i am not sure what he is running but i was not stock.
He was running with the stock rails; however the 800cc injectors were pretty much maxed out at 22psi as well as the perrin maf housing.
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Old 03-22-2009, 04:14 AM   #11
alcoolaid
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You'll be fine with stock rails on a GT30. There's quite a few guys on this board pushing 450-500whp+ on the stock rails. Good mod is the parallel fuel rail mod.

With meth injection you can run leaner which requires less fuel.

So imo, I don't even think you need aftermarket rails but if you want them then I guess you could get them.
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Old 03-22-2009, 06:21 AM   #12
Jeff54
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stock rails are fine for gt30R.....but they suck....the routing of the hardlines is loaded with fail - just finished doing front mounting brents car yesterday and they are a pain....

+1 what drakar said, i have the aeromotive rails as well...no complaints.... they're 125 USD....+ 60$ for lines and fittings, and then if you want another 160 for an A1000 or just use the stock fpr.....cheap and good....

i dont understand why people pay 400$ or even 300$ for fuel rails....


oh i forgot....search n00000b! lol
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Old 03-22-2009, 11:56 AM   #13
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Good info to consider here.
My main reason comes down to convenience of install and future changes. That's where the stockers fail miserably. Money isn't an issue either, as it's all long term investment when it comes to the cars.

Hell, I'm having so much fun with the old car, I may not do the Subie this year.

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Old 03-22-2009, 02:26 PM   #14
Jeff54
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Quote:
Originally Posted by hypa View Post
Money isn't an issue either

then buy the aeromotive and give me the difference in dolllarrs..
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Old 03-22-2009, 02:38 PM   #15
steve
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I'll buy the APS and you can make your own munnay!

Budday!

or not.
I'll look into the aeromotive option. I have to do some fuel work on the old car too, and the experience will help.
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Old 03-22-2009, 03:21 PM   #16
Drakar
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Quote:
Originally Posted by hypa View Post
I'll buy the APS and you can make your own munnay!

Budday!

or not.
I'll look into the aeromotive option. I have to do some fuel work on the old car too, and the experience will help.
your old motor is simple for fuel, lol 8-10 psi and most likely block driven mech pump, sitting on the front side of the motor, I would say switch that up for a nice electric pump to makes 8-15psi run a good regulator with some fat lines and youll be good to go, inline filters are your oyster since you can go from regular all the way up to clear ones for the baller look.

Aeromotive is the fuel guys for now, I like APS gear too but custom is just SO much more fun and in the end it's what you want vs what your told you want .

Have fun, the beast of yours is gonna be a blast, totally different then the STI, youll like the change back and forth.
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