ke70, 4age fuel set up question

[sld sho]

hey guys,

just found my self a jdm 4age so picking that up next week

my question is about the fuel system i will need to run. from the reasearch ive done people use vl fuel pumps i dnt really want to use a vl fuel pump lol.

im thinking along of the lines of a surge tank with a bosch 040? will the fuel pump over power the 4age (standerd) if it wont what other parts do i need? is there any work shops in melbourne that do these sort of things?

and are there any other options? what have other people used? feedback on the different options?

all info is greatly appreciated

[AE86 Spoontah]

Hey mate there is plenty of info if you use the search function but anyway. . .

You will need to get some bigger fuel lines as the stock ones are too small (3/8 from memory)
A Bosch 040 is a good pump to use and no it won't supply too much fuel, that's why you have a fuel reg for.
If you go down the surge tank route (good idea if you're gonna track it), you will need a lift pump to supply the surge tank (VL turbo lift pump is good and there are articles on how to install them into AE/KE) then you will also need a 040 or the like.

Hope this helps champ

[slide86]

By far the best way is to spend the money and put a JDM tank in it and modify the fuel neck. The pump will be in the tank and out of site, its so much neater and you wont have fuel lines running in the cabin space

[haveaparty]

There is a Toyota camry out there that the pump bolts straight into to where the float is in the tank. Dunno wat model camry but I would assume early 90's

[sld sho]

how much do the jdm tanks go for? is it a jdm ae86 fuel tank?

[Meeksie]

Just building on this topic I have a stock rwd 4age with twin 40mm mikunis in my 64 Capri. I haven't run it yet with the twin carbs but my current fuel pump makes loud ticking noises which gives me the shits. What external fuel pump will be suitable for my twin carb setup and is it silent? Also what fuel regulator can you guys recommend I use?



Thanks in advance
Nige

[haveaparty]

The load ticking will be alot quieter wen fuel is actually running through it. But all fuel pumps make a buzzin noise. Or just try and muffle it with a towel.

[Dylan]

Is it a Facet solid state type fuel pump?, these can be quite noisy

[slide86]

use a quality holley blue or something similar to what the V8 boys run. they are almost silent, and provide the correct fuel pressure for a carby setup. I would still have a regulator in the engine bay to control that pressure tho, nothing worse than to much fuel pressure going into a bowl

[Victim]

Hey mate, thought I'd chip in my two cents.

Why don't you want to use a VL pump? The only reason why you've found out that they're so commonly used in this type of setup is their suitability and how common they are. And if they are mated to a RB30 setup from factory, it's clear it'll be able to keep up with a 1.6L 4age.

In my opinion a Bosch 040 is a great pump no doubt, but it's overkill. Look the specifics up and you'll find they are designed for gnarly 500+ horsepower setups. Plus they're not cheap. If you've somehow managed to find one on the cheap then by all means go for it, but if not I wouldn't spend the big bucks on one because there's no need, a VL one will do nicely.

In my setup (16v 4age in an AE71) I've got, in order: ADM 86 fuel tank with "massaged" tongue, VL lift pump, fuel filter, surge tank, VL Turbo high pressure pump, JDM 86 fuel hard line, under-bonnet fuel filter, fuel rail, standard injectors, engine.

Not too sure as to how much research you've done, so excuse me if you already know the following, but just some general trivia for you to consider:

- don't be suckered into paying more for a VL pump out of a "turbo" as opposed to a non-turbo, they are exactly the same.
- with this setup you'll have to use a lift pump. A lift pump is a shit weak pump that lives inside the tank that only has enough power to lift the fuel up out of the tank, up to the high pressure pump.
- my setup is in my boot, and what is in the actual boot itself is the first fuel filter, the surge tank and the high pressure pump.
- high pressure pumps vibrate and are annoying as shit if not insulated, regardless of if it's a Bosch or a VL etc. When you mount it, wrap it in some rubber or something to dampen the noise from reverberating.
- a surge tank is a good idea as a failsafe. It's either that, or don't drive it hard when you've got a quarter of a tank or less, otherwise you risk starving the motor of fuel when the fuel in the tank sloshes away from the lift pump. Surge tanks are also good because the ADM tanks have no internal baffling / a cup around the pump to prevent surge (called a swirl pot) which is essentially the only difference between the two tanks.
- as mentioned already, you'll have to upgrade your fuel soft lines for EFI-rated fuel hose. This is because an EFI system is under way more pressure and standarded carby hose will simply split under the pressure. You're playing with fuel here, you want to play it safe so you don't blow up. I went one step further and installed the fuel hard line out of a JDM sprinter, which is a slightly larger diameter than the standard 4ac hardline that you're working with. These hardlines can still be bought new from Toyota for quite a reasonable price (less than $100 last time I checked) and is worth it in my opinion, to handle the extra fuel needs of a 4age. To be honest though, I doubt you'd have real troubles if you kept the standard hard line, but best practice is to get the proper diameter pipe for the application.
- all in all, at the end of the day, just pay the money for a JDM tank, if you can find one. They are the best solution to your problem, everything you need is contained inside it (baffling and a swirl pot) and it means you don't have to have a surge tank and fuel lines clogging up your boot. Make sure you get the cradle for the in-tank pump as well if you're going this option.

If you still need help, I can give you a diagram of my fuel setup and some photos if you need.

Hope that helps mate, if I can think of anything else I'll let you know.

- Alex.