JGY Fuel Rail

[240marcuSX]

does the JGY Fuel Rail fit on the KA24E? I could email the company, but i dont want to wait for a response from them, when its quicker on here. Ive asked this before in the thread "My Setup" but im not sure if you knew which motor i have. Ive since read that the Fuel rails on the E and the DE are not interchangeable. thanks.

edit: i plan on running the rail with the 50 lb/hr injectors that they also sell.

[rco8786]

mmm e-mail them anyway, it will take just as long for someone using that rail to read this.

I don't believe that the E and DE rails are interchangeable tho.

[andrave]

I read in another post that the E and DE rails have different spacing.

[WDRacing]

do a search for DIY fuel rails on Yahoo, there are a ton of options...

[cnichols]

But, by going with this fuel rail and pushing serious power, the switch to low impedance will be necessary. What is involved with the in-line resistors and where do you find them?

[DaveEEE]

But, by going with this fuel rail and pushing serious power, the switch to low impedance will be necessary. What is involved with the in-line resistors and where do you find them?

You mean high impedance? If you go with the JGY fuel rail, you will need MSD-style, high impedance. The dropping resistors will then, ahem, drop the impedance. I've got an extra set of dropping resistors from JWT if you want em, $20 shipped. They can be hard to find.

-Dave

[cnichols]

Ok...if they drop the impedance...then why would I need high impedance injectors, not low?

High impedance injectors are used in the lower flowing injectors. Anything 55 lb/hr and up are mostly low impedance.

[:: orion ::]

Here's the deal:

OEM are high impedence.

If you go to top-feed, you can buy high impedence 50lb'ers, and they are plug and play (with the correct clips, that is).

72lb'ers are typically low impedence, and require resistors to INCREASE the resistance to make them function properly, and not burn out the injecotr drivers.

That is, unless JWT has modified your ECU to use peak-hold, low impedence injectors and you have high impedence ones...which is unlikely.

Later - Brian

[240marcuSX]

ok, i take it that they wont work, ill search for a diy. i guess ill have to do a diy rail with 50 lb/hr injectors, if not ill email the guys at realnissan and see what theyre doing for fuel... thanks for the help, since im already responding, the Es injectors are top feed right? i get them confused.. sorry

[s13conv]

E = top feed

[DaveEEE]

Here's the deal:

OEM are high impedence.

If you go to top-feed, you can buy high impedence 50lb'ers, and they are plug and play (with the correct clips, that is).

72lb'ers are typically low impedence, and require resistors to INCREASE the resistance to make them function properly, and not burn out the injecotr drivers.

That is, unless JWT has modified your ECU to use peak-hold, low impedence injectors and you have high impedence ones...which is unlikely.

Later - Brian

Make's sense, but I always remembered JWT referring to them as dropping resistors? Yet, they increase the resistance? Oh well, their idiots.....

Ey B, I'll hit you up tomorrow, got a question.

[Nathan]

I need to call JGY tomorrow, if I remember, I will ask them about making an E specific rail.

[andrave]

there would be no way to lower impedance with resistors, which increase impedance.

[d240t2]

Oh well, their idiots...

If you are going to call a group of people idiots...the least you could do is use the correct form of their/they're/there. Not trying to bag on you...I just thought it was pretty funny.

And you can lower impedance (resistance) by adding a resistor in parallel. It's works the same as how they run subs in parallel to drop impedance and get more out of the amp. 2 4ohm subs in parallel give 2ohms impedance.

But that isn't what JWT does...I don't know why they call them dropping resistors. Probably came from the same naming convention that says a near-miss is a miss.

[240marcuSX]

Thanks Nathan, thatd be my easiest (but probably not cheapest) way out of my predicament. If you forget, ill call them.

what is meant by the fuel rails having different spacing? the injectors are farther apart on one than the other?

I only need to save up a few hundred more bucks, then i can buy everything i need for this turbo (hopefully itll be done sometime around christmas or early in the new year), and still have a cushion in the bank if something goes wrong.

J/W how long does the JWT ECU take to ship out??

[huguetpj]

And you can lower impedance (resistance) by adding a resistor in parallel. It's works the same as how they run subs in parallel to drop impedance and get more out of the amp. 2 4ohm subs in parallel give 2ohms impedance.

Electrical speaking yes, electronically speaking maybe. Will the high impedance injector in parallel with a resistor get enough current to open up?

[cnichols]

Electrical speaking yes, electronically speaking maybe. Will the high impedance injector in parallel with a resistor get enough current to open up?

You need the resistors for the low impedance, not high impedance injectors.

[huguetpj]

You need the resistors for the low impedance, not high impedance injectors.

That I know. But people keep talking about using injectors to lower the impedance of high Z injectors, and as I said electrically speaking it should work... electronically speaking I haven't tried. Anybody tried?

[cnichols]

That's one area where I don't want to be trying new untested stuff when it's so cheap to buy low impedance injectors anyways.

[huguetpj]

I agree

[cnichols]

There is some good information in the instruction manual (Page 67) for the Electromotive TEC III which attempts to explain High vs. Low Impedance injectors, how they should be wired up, and why. You can download it in Adobe format from their website.

[Nathan]

Gosh darnit I did forget...sorry man! Give em' a call though and talk to Shaun, I'm sure he can help and answer your question quickly!