BoostedRex

Ashraf, thanks for the input bro.

Sean, can you post a pic or two of your setup so that I can get a better idea of what you are talking about? Thanks in advance.

Zach

Zero R

iTrader: (1)

Zach, I will just email you pics shoot me your email, but basically I don't like the stock pickup, and That is what kept me away from twin intank pumps. Basically mine goes like this intank denso to surge(undercar) to two bosch 044's to regulator return to surge return to tank.

-Sean

BoostedRex

Sean,

Check your PM's. Thanks for the help.

Zach

SlingShotRX7

Correct me if I am wrong.

BUT.

Isn't the Upgraded fuel pump for the FD the
NipponDesmo Fuel pump?? Which is also the Supra TT
fuel pump..

And is the Nippon/Supra Fuel Pump enough to run a
Single?? to maybe 18psi??

sk8world

iTrader: (5)

Thats my same question, Is the Nippon (upgraded one that rx7.com sells) big enough to support say 18-20 psi? They claim 500 whp, (420bhp?). I guess that is getting close to its limits. Anyone using this. I will also be using a FPR 550's and 1600's.

WHIPSrx7

I'm running an Aeromotive A1000 Fuel Pump to my T-78 powered engine w/o any worries of having to get a second pump. Who needs a second one????????????? You shouldn't if you get a good pump! Sorry...forgot to add...you might need one if you have an extra rotor or two. LOL

jantore

Im going to be running this Aeromitive fuel pump on my FD
http://store.summitracing.com/partde...rt=AEI%2D11101

Im hoping it will deliver enough fuel to run my TD06H-25G turbo at 1.4 bar of boost.

And i will be running the original fuel pump inside the tank. To pump fuel up to the new fuel catch tank. Oh and it's big



JT

sk8world

iTrader: (5)

looks like you need to fill that with beer and tap it!! Cant imagine you are serious! Looks like you will need to cut a hole in your trunk lid!!!

t-von

iTrader: (8)

I too was thinking of using a fuel reservoir. Mind I ask were you got this one? According to the info over at Rotaryextreme, the stock in-tank pump should flow enough fuel to keep up with some aftermarket fuel pumps when a reservoir is used. Please keep us updated on this setup. What kind of driving will you be doing? I'm curious to see how well the stock pump holds up the that Aeromotive pump.

SlingShotRX7

Dude you gonna drive around with your Hatch open?
I do'nt see how it would work, unless you lay that thing
sideways.

bond007

Fuel inside the cabin is unsafe, period.
No tech inspector at any race organization would approve of that thing being inside the car.

Marcel Burkett

I used to have one too (A 1000) and my injectors were hitting 88% duty cycle at only 12psi boost , the fuel pressure would peak at 52 psi at around 6000rpm's then begin falling back as the revs continued up.
Thats why I got rid of it and got the Bosch '044 pumps.

WHIPSrx7

I'm running 17psi boost and my injector duty isn't high at all! And I'm running extremely rich, something must have been wrong with yours...what injectors were you running??? I don't get how you injector duty would be that high...it wouldn't have to do with the fuel pump though (injector duty depends on the injectors' size).

Marcel Burkett

4 x 850 cc's and
2 x 1300 cc's

maxcooper

The stock pump doesn't have to keep up with the Aeromotive pump, really. The Aeromotive pump will take fuel from the swirl tank, lose some out the injectors, and then return the unused fuel to the swirl tank. The stock pump needs to match the flow that the engine will be drinking, but it only has to do it at low pressure.

Imagine this situation:

1. Stock pump fills swirl tank at 40 GPH at very low pressure (essentially no pressure)
2. Aero pump is flowing 50 GPH at 60 psi out of the swirl tank
3. Injectors are flowing 25 GPH
4. Return line from regulator is putting (50 - 25) = 25 GPH of fuel back in the swirl tank
5. Overflow tube from swirl tank is flowing (40-25) = 15 GPH of fuel back to the main tank

The Aero pump could be flowing 8000 GPH and the swirl tank still would not run dry. The pump that moves fuel from the main tank to the swirl tank just has to beat the flow that the engine is actually ingesting, albeit at very low pressure which makes it an easy job.

-Max

t-von

iTrader: (8)

Yea I kind of knew that from reading the info from rotary extreme. So the stock fuel pump shouldn't have a problem with keeping that reservoir full? If so then I'll guess I'll keep my stock one and forget about the walbro.

sub-zero

I was using the Aeromotive A 1000 and just swithched to the Eliminator pump. It is the exact same size and is even quiter but flows 200 lbs/hour more then the A 1000. This pump should be good for 25 plus psi easy.



I had 98% injector duty with a T-72@24 PSI and the A 1000

750cc/1680cc

jantore

It will fit. no why did i bolt it there if it would not fit

The hatch closes nice and good. Il take a picture next week when it's finished with the fuel lines and all.

bond007

Maybe u can't have a fuel reservoir like that in the US, but u can here in norway.

WHIPSrx7

Wow! I'll look into that sub-zero. But the thing I was talking about (or pointing out) was that Marcel Burkett said he was hitting 88% injector duty at only 12 psi! I find that hard to believe. My secondaries are 1680's though, so maybe that could be the difference, I don't know. But generally (I thought) with a single turbo setup you would want something bigger that 1300's??? Oh well, thanks for enlightening us about the Eliminator pump even though I won't be ever running that high psi on my current setup. Too much for my engine I believe.

bond007

Just because you CAN doesn't mean you SHOULD. It has nothing to do with being in the USA or US regulation. It has to do with basic automotive safety and I'm sure that the European racing organizations (FIA and whoever else there is) wouldn't condone such a setup.

There is a reason that gas tanks and fuel lines are OUTSIDE the car, that you don't run a fuel pressure gauge into the cabin without an isolator/use an electric pressure sender, and that people switch to fuel cells when racing to ensure that the fuel stays in a container, again OUTSIDE of the vehicle.

Not to be mean, but it's your life, and you can do with it as you please, but you were warned. It is something to think about when you are in the burn unit (if you even get to the burn unit if you have an accident).

Too many people throw safety (as well as reliability and money, but those are less precious commodities than a human life) out the window hunting for a few more horsepower without taking a step back to think about what they are doing.

There are other safer alternatives that would accomplish the same goals that you have in terms of fuel flow.

mavila

iTrader: (58)

For those that have them, where are people mounting their reservoirs? I'm going to run one and am trying to figure out how to set everything up. I'd like to avoid the setup pictured above since my car must pass tech (and I don't want fuel in the cabin anyway), and I'm wondering where a good place for the reservoir might be.

r1dreamer

iTrader: (4)

the nippondenso pump is the same as the supra TT pump and it also flows 255 lph . its good for up to 500hp. i bought mine used from the supra forums. works great.

brandon

jantore

Maybe so, but could u please tell me, where u would put a fuel reservoir? U can't put one under the car, and not in the engine room. Oh and, to put big fuel lines under the car is also not good.

Oh and one more thing, take alook at some of the japaneese race RX7', u will find that they have fuel lines in the trunk.

in2twins

Bond007, you are not correct, SCCA, NASA, JGTC, and many others routinely have parts of the fuel system in the car. Most require a metal bulkhead(a couple of sheets of aluminum with a piano hinge), but probably half of all production based race cars with fuel cells have the top of the cell in the main compartment.
No one would argue that isolating fuel from the passenger compartment is a good idea, but it is also better protected from major damage in the chassis than out. Take a look at a road race car the next time you are at the track, most likely you will see fuel system components located within the main compartment.
Anyway, not disagreeing with the premise, just pointing out your facts regarding rules are incorrect. Regards, Carl

diyman25

IS ok to run Fuel line in the car. but has to be a Stainless steel hose. with AN type of fiting. most of Road race car has fuel ine in the car.
NO rubber line, or Hard line(as you see in the Japan magazine, even thougt they are cheap and easy to fab, but during the accident it might got bend or crack)