Will any of the 300zx fuel injectors fit a L28? or are there any other nissan injectors that will flow more fuel and still fit to the L28 motor?. . . just wondering if i'll have to go aftermarket or not with this.

 

Do tou have a n/a or turbo??

 

If you got a turbo, go for the RX-7 injectors. Those things flow a hell of a lot of fuel and, on the L28, will be operating at a very low duty cycle. You only get 2 per rotary though. So if you're picking from a scrap yard, you'll have to find 3 rotaries.

 

Specifically, what kind of RX7 are you talking about?

I too, was wondering if any Z31 injectors or parts would work for my '82 turbo.

 

The ones I've heard of being used are off the 13B FC's. I don't know if the later model FD injectors will fit or not.

If you got a turbo I think it's Jim Wolf Technologies that sell a kit for the L28ET that uses the VG30ET ECU and Airflow sensor. I'd check them out. It don't work on the NA cars though unless you got the turbo distributor. You can definitely use the 300zx injectors then. That kit can also be adapted to use a bigger Cobra mass air sensor too. They tune the ecu to run with the sensor.

 

no turbo, . . . i wish then i'd be able to get a lot more out of that engine but, then again a lot more chances for things to break. although im thinking about docking the 280 and begin building it up once i find another daily driver, im hoping to find a turbo motor at a junkyard that i can rebuild, then find the rest of the parts that i'll need to run a turbo motor, . . . i know of ten or so 280's in pensacola and none of them are turbos, but, at least they're all sticks

 

I have done a lot of research on this on Hybrid Z.org
What I found is that the old 280ZX and ZX turbo computer just plain sucks. Using bigger injectors might make your top end fuel mixture better (not as lean) but if you do that, you'll be running rich in the midrange and very rich at idle. Adjusting the mixture down using the AFM or other method will only counteract using larger injectors.

With a turbo or NA engine, for 99% of the applications use the STOCK injectors but use a good quality rising rate fuel pressure regulator to raise fuel pressure only at higher rpm. That way in the mid and low end you're running just like factory. This will maintain good drivability, clean spark plugs, and better gas milage.

http://www.bellengineering.net/Pages/products_FPR.html

this is the brand I'm going to buy. I'm getting the one made for Factory Turbo engines. You would get the non-turbo one.

 

The JWT ECU can be tuned (by JWT of course) to work with certain size injectors and what ever other mods you have done. The 300zx Air flow sensor is also far less restrictive and more acurate than the vain type found in the 280zx.

It costs a bit more than a RR Fuel Regulator, but it will positively impact every aspect of driveablitly with your Z. You don't have to have a turbo engine, Just the Turbo's Distributor and sensor.

This ain't a quick cheap fix though. This is if your serious but don't quite want Stand alone engine management. Next best thing. Plus it's infinitely upgradable. You just send them the ECU back and they retune it for you for whatever combination of parts you got.

 

Oh and if you're not seriously modding your engine, then bleach is right. Stick with 280zx injectors. They will addequately (misspelled) flow enough fuel. Probably good for another hundred HP worth of fuel atleast. As long as duty cycle is kept at 80% or below. After that you risk starvation. BOOM!

 

I saw in the Summit catalog what appears to be a boost-proportional rising-rate FPR from Aeromotive for a surprisingly good price. I'll post up the item # when I get a chance and see what y'all think.

 

Bell Engineering makes the absolute BEST pressure regulators. High quality, durable, reliable, tunable, and we're only taking about $250-350 for these things. Don't go cheap.

 

Here's the info on that Aeromotive FPR I saw. http://216.242.145.16/products/product.phtml?p=12

"Compact EFI Regulator, P/N 13105

For applications producing up to 1,000 HP where space is at a premium.

Compact design fits small engine compartments while providing big performance, flows enough to handle 1,000 HP fuel pumps. Ideal for EFI systems where only one inlet is needed.

Adjustable from 30 to 70 PSI.
New design, equiped with removable -6 AN male fittings for inlet and outlet ports- eliminates the need to buy additional fittings and O-rings.
Vacuum/boost port relocated to the side of the cap for easier pressure adjustments. Fuel pressure will rise on a 1:1 ratio when referencing boost. "

This sounds like a rising-rate regular, right? If so, it's considerably cheaper at $155, yet from a well-known company. I realize it may not have as much adjustability as the Bell RRFPR, but it seems like a good budget alternative for mildly modded engines.

 

Damn. I'm going to look into one of those when I build my turbo-terror engine.

 

you guys are so dam smart thaks for doing all the work for me