immanuel__7

iTrader: (8)

id like to know what types of fuel pumps used in this type of swap, keeping in mind my car was a 12A engine and had a lowvoluem and preshure pump. id like to keep it inline if i can allso, and what kind of LPH or GPH did it run thanks

Alex-7

You need an external EFI pump.

Like the factory GSL-SE unit for example.

steve84GS TII

Just about any inline EFI pump will do,the issue is the pickup inside the tank.
You need to surround the pickup with a baffle to keep the inlet submerged when the fuel sloshes around.This is most problematic when the fuel level gets below 1/2 and there is more air in the tank.

Carb engines dont really have big problems with this since the low pressure system can pass some air bubbles,but EFI requires full time,high pressure fuel to fire the injectors.The instant the pump sucks air and looses pressure,the injectors cut off.
Do a search,there are several choices,some good,some bad,some difficult.Its been covered quite a few times in the past,what with the popularity of TII and other later model EFI engine swaps.

KeloidJonesJr.

iTrader: (8)

HELL YES! I love turbocharged 1st generations.

REVHED

The injectors will continue to fire they'll just spray less or no fuel.

REVHED

You can either do what I did and install a surge tank or install a fuel tank or cell that has an internal baffle.

My setup,

Alex-7

Back to the lounge you parasite!




We don't need you gaying up this section too.

Hyper4mance2k

iTrader: (40)

Wow, a carter pump feeding the serge tank before your pump. I wouldn't think it flowed enough. Myabe my holley blue might work then...

REVHED

It's more then enough.

immanuel__7

iTrader: (8)

what carter fuel pump is that, im can shop prices where i work so i can get it for 1/2 price

Jeff20B

iTrader: (13)

It looks like the 7 pound Carter. I have one and it flows plenty.

immanuel__7

iTrader: (8)

ok so you use the 7psi pump then what else do you use to make it reach 72psi witch is what the specs says for a stock fuel preshure??
what other pump do i need to feed the poreshure ?

REVHED

The Carter only feeds the surge tank. You need a high pressure EFI pump to feed the injectors. Mine's a Bosch motorsport pump.

85rotarypower

Holley makes a nice inline EFI pump. I have the higher pressure one as I originally planned on going EFI with my car, but that changed when I had problems with the EFI on the engine I had. I got the parts to convert to carb and this is where I'm at. I can't really say much other than the pump runs really quietly and worked well with the old EFI system when it did "run".

Here is the pump I got. I have the 510-12-920 pump I believe.

http://www.jegs.com/webapp/wcs/store...tegoryId=10307

immanuel__7

iTrader: (8)

my boss found me a fuel pump for a subaru its rated at 65 to 92 psi i think that might work good, its 165$ shop caust tho lol so around 250 ish regular price

immanuel__7

iTrader: (8)

my boss found me a fuel pump for a subaru its rated at 65 to 92 psi i think that might work good, its 165$ shop caust tho lol so around 250 ish regular price, il keep looking tho thnaks for iinput

renns

For an external pump take a look at an early VW CIS-injected application. They used a Bosch pump run at very high (90 psi?) pressures, that offers substantial flow in our lower pressure efi applications. I run one on my turbo 1st gen, together with a small surge tank fed from the stock low-pressure pump. These pumps are mounted in a big rubber boot, which isolates them very well, resulting in near-silent operation.

This method of external pump/surge tank works fine and avoids fuel tank modifications. However, if I was to do it over, I'd definitely take the time to have the tank modified similar to Steve84GS_TII, and fit an internal pump. It results in a much cleaner, simpler installation.

Hyper4mance2k

iTrader: (40)

go with the MSD pump or the walbro pump, best pump for the money. the walbro will support 450hp. the msd about 400hp

immanuel__7

iTrader: (8)

id like to know, instead of moding the tank to prevent sloshing, could i not install an elbo on my drain plug and use it as my new fuel pickup? i would fuse a fuel filter before the fuel pump.

dj55b

iTrader: (2)

I would imagine that you'd be changing filter every week or so with that pick-up. But I could be wrong that sounds like a good idea but i'm pretty sure that there's a reason why its not done. even if you look at racing tanks they're still all top feed.

diabolical1

iTrader: (3)

i've seen it in practice on a pretty hot turbo Rx-7 before. if i recall, it was an SE that was running a turbo 12A, running 10 seconds! so i know it has been done. the thread was on this board and it had pics, too. if i recall, Directfreak started the thread.

i would imagine if you had the tank cleaned (and coated ?) before you set up the system, then the pre-pump filter would need changing any more than usual. however, i may be wrong as i have no experience with it.