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Thread: DE+T Aeromotive fpr and oil line ?'s

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Posts: 1-10 of 25
2014-03-17 18:02:24
#1
DE+T Aeromotive fpr and oil line ?'s
Currently I have a jdm de with s4 cams. I am putting together a budget build turbo setup. Goal is 10psi as a daily driver on 92 octane. Probably 230whp ish. In the distant future I’m sure I’ll go for bigger numbers. Already have 370cc injectors and t25 ball bearing turbo. Going to send jwt ecu in for a 4 bar program to help with fuel being atomized more efficiently as well as not cap out the injectors too soon.

Now from searching 4 bar runs 59psi so I’ll need a fpr. Decided against the nismo unit for a couple reason. I’m wary of buying used and new is more expensive than aeromotive. Also have read people have leaking or bad nismo units. This brings me to the following Aeromotive 13301:
http://www.summitracing.com/parts/aei-13301/overview/

It should go upt to 65psi and I can find adapters for the 3/8npt to 5/16 barbed. ( I believe 5/16 is stock rubber fuel line size.) Would this fpr be sufficient for my needs?

Thanks to the search and Ben Fenner I found a comprehensive list for what lines and fittings are needed for a de+t. I see -3an line is recommended with no restricter for a ball bearing turbo. However if I change turbos in the future to say a journal bearing would I need to change the line to a -4an line for increased oil flow?

Thanks in advance for any insight you can provide.
2014-03-17 18:28:11
#2
you need a fpr that goes higher than that. fuel pressure goes up by 1psi per pound of boost. I have used the nismo units on every turbo car I have ever owned. I recently had one get a minor vacuum leak but it was 9 years old. As for the oil feed a -3an line is big enough for a 6262. Which is what I run on my car with no restrictor. I ran a restrictor on my ball bearing turbos but was using a -4an feed line.
2014-03-17 19:56:18
#3
TOMEI Adjustable Fuel Pressure Regulator FPR Type S
I have used this type of FPR with the adapter when I had a t25 setup done by my ex-mechanic when I didn't know crap about SR20 was just starting to get in the game and this FPR worked wonderfully. Is chaper than the Nismo and good quality FPR and is from Japan (Tomei great brand)
Here is the adapter:Tomei FPR Adaptor Fitting for Nissan
Last edited by Abdielo on 2014-03-17 at 19-58-17.
2014-03-18 13:54:41
#4
A Aeromotive 13109 is a popular and efficient unit. It uses -6an in/out which is more than enough for what you need to do. If you need help finding correct parts, let me know.

And as far as turbo feed/drain setup, it all depends on what size turbo you are running. Most factory Garrett units have a built in restrictor.
Last edited by AutotechMotoring on 2014-03-18 at 13-56-55.
2014-03-18 23:49:12
#5
Originally Posted by cortrim1
you need a fpr that goes higher than that. fuel pressure goes up by 1psi per pound of boost. I have used the nismo units on every turbo car I have ever owned. I recently had one get a minor vacuum leak but it was 9 years old. As for the oil feed a -3an line is big enough for a 6262. Which is what I run on my car with no restrictor. I ran a restrictor on my ball bearing turbos but was using a -4an feed line.


I guess I'm a little confused on this. Most fpr's that I've been looking at (like the one autotech posted are have an adjustable base pressure of up to 70psi or so. The one I linked is adjustable up to 65psi base pressure and can handle 100-250gph.
I thought base pressure is what you can set it at but it can handle additional fuel pressure from boost. I'm sure I'm over thinking this but how can I tell that the 13301 is too small for my needs? Not saying I'm stuck on that one specifically but i want to make informed decisions. Thanks again!
2014-03-19 01:19:29
#6
you need to look at the operating range for the fpr and the adjustment range. aeromotive makes a fine product. I like the nismo unit because its simple when your using a stock fuel rail.
2014-03-19 03:29:12
#7
What about this one?

Aeromotive*|*13105 - Compact EFI Regulator

If you want to run 59 psi base pressure and 10 psi of boost, with a rising rate of 1:1 that would put you at 69 (giggity) psi if I'm correct in my understanding of how this works. Instruction sheet provided states it's operating range is to 80 psi.
2014-03-19 22:55:48
#8
Back in the day, when sport compact and turbo'd cars werent in the big development stages, people were using FMU's which were boost dependant and you would use "discs" to determine the set pressure you wanted to run and that was it. So for instance if you used a 12:1 disc in a FMU unit, it would pump up to 120psi of fuel pressure, which in return most intank pumps could not handle it and seize up.

These days, most regulators especially the Aeromotive ones have built in diaphragms that hold great fuel pressure. Base pressure of 65psi seems a bit excessive and will only have a higher rising rate when vacuum is created under "boost". Most run around 40-45 psi base fuel pressure is more than sufficient.


Originally Posted by ser-luvinit
Originally Posted by cortrim1
you need a fpr that goes higher than that. fuel pressure goes up by 1psi per pound of boost. I have used the nismo units on every turbo car I have ever owned. I recently had one get a minor vacuum leak but it was 9 years old. As for the oil feed a -3an line is big enough for a 6262. Which is what I run on my car with no restrictor. I ran a restrictor on my ball bearing turbos but was using a -4an feed line.


I guess I'm a little confused on this. Most fpr's that I've been looking at (like the one autotech posted are have an adjustable base pressure of up to 70psi or so. The one I linked is adjustable up to 65psi base pressure and can handle 100-250gph.
I thought base pressure is what you can set it at but it can handle additional fuel pressure from boost. I'm sure I'm over thinking this but how can I tell that the 13301 is too small for my needs? Not saying I'm stuck on that one specifically but i want to make informed decisions. Thanks again!
2014-03-19 23:55:47
#9
I misunderstood the tech notes. the base pressure is adjustable from 20-65psi. Thats not the operating range. That unit should be fine.
2014-03-19 23:58:22
#10
Originally Posted by AutotechMotoring
Back in the day, when sport compact and turbo'd cars werent in the big development stages, people were using FMU's which were boost dependant and you would use "discs" to determine the set pressure you wanted to run and that was it. So for instance if you used a 12:1 disc in a FMU unit, it would pump up to 120psi of fuel pressure, which in return most intank pumps could not handle it and seize up.


I have not seen anyone use a fmu in a really long time. Brings back memories of people using a extra injector before the throttle body.
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