I have an 82 280zx 2+2 non turbo and was wondering how the turbo injectors would work with the non turbo injectors. my only mods so far are msd blaster 2 coil taylor spiro wires and E3 spark plugs along with cold air intake and 2.5 inch flow threw exhaust. Do u think i will need the turbo fuel pressure regulator or what?

 

first off we speak English on the internet, second off your not going to ever need bigger injectors on your NA motor unless your doing a shot of nitrous.

 

Welcome to ZDriver!

Feel free to search as this question has been asked quite a few times.

Check this recent thread: https://www.zdriver.com/forums/280zx-performance-technical-79/injectors-other-cars-other-qs-24524/

For the non turbo 280zx, there aren't many injector upgrades available, or needed. An ADJUSTABLE fuel pressure regulator, tweaking the AFM, and CHTS signal will gain you plenty. w00t!!! Show us pics of your car!

 

But the basic formula for engines is that more air+more fuel=more power if your able to burn that fuel. So i figure if i upgrade me spark..all i need now is an msd 6al box than i should be able to burn that extra fuel thus giving me more power

 

on a NA motor the only real way you can get more air is by increasing the displacement or by adding a shot of juice. or you can go the easier route and turbo it.

 

WEll i do plan on turboing it but would it run fine till then with the injectors? and i could get my air my porting my intake and 60mm 240sx throttle body

 

no, because the 2.8 liter engine only needs so much air it would only cause you to run rich and would be a huge pain in the *** because nobody makes a piggy back system for the stock 280zx computer.

 

It would no so much more air with turbo injectors though. they are only like 270cc and stock are like 185 cc its not a huge diff. i think all i will have to do is run the turbo fuel pressure regulator.

 

near 100cc is a big difference, if you up the compression on the motor upgrade the injectors, other wise you have no use and will probably loose power, that equation you posted is genaric, its about A/F ratio. not more + more = more all the time.

 

#1... That is a HUGE diff for the stock 280zx ecu.

#2... The n/a and turbo fuel pressure regs are EXACTLY the same. Look it up in the Haynes manual.

 

ok thanks. so how would a turbo ecu work without a turbo, with my turbo injectors. Also that doesnt make sense cause the computer opens the injectors by time not by volume so it doesnt really kno how much fuel is going it just thinks its the stock injectors. but a datsun computer is very basic and doesnt compensate fuel trim and what not like new car computers do.

 

Better than slapping in turbo injectors alone.

Um... you just answered your own question. The 280zx ecu CANNOT compensate for more fuel... it does not have the ability to do so in a way that won't foul out the motor. You've almost got it... I suggest reading some fuel injection books & you'll have it down.

PS... you sound obsessed with turbo injectors. Make your life easier and just swap in an L28ET.

Read this:

 

its simple you will run very rich and make your car run like crap.

 

Well i want to run the non turbo f54 block with a turbo till i blow it anyway but i want it to be a beast till then. so will my car run good with the turbo ecu and turbo injectors without the actual turbo on it yet?

 

One major problem: the turbo ecu has completely different harness connections than the non turbo. You'll also need the turbo distrib & oil pump shaft & AFM. And you'll need the fuel pump control module.

BUT!!! if you get a complete L28ET harness, and distrib, and do a Z31 ecu upgrade w/ MAF... that would work. You got me thinkin now!

 

Well i think that sounds like a plan beings that im turboing my car. Im thinking my none turbo block with 8.8:1 will handle like 8-10lbs of boost easily.
but i really want to start buying the turbo stuff then. Cause it sounds bad a$$

 

If you really want to do it, check out this thread: https://www.zdriver.com/forums/240z-280zxt-s30-s130-tech-tips-275/worlds-first-z31-na-ecu-swap-24434/

Jmmorriso swapped in a Z31 ecu & harness.

 

that and you dont have to deal with the crappy late 70's EFI system.

 

if got a 82 non turbo motor in my 260Z turbo'd the proper way so to speak, turbo sensors dizzy harness ecu. it handles 8lbs beautifully, but i did it all at once. NA it will flood out. just dont. collect the parts then do it at once.

 

Ok sounds like a plan. So how well does ur non turbo motor run at 8lbs? My guess is that its fast as heck.

 

hmmm.... depending on tmepurature, i can spin the top of first under just boost (no launching) how hard i hit second i can make the gear almost useless, the rest if just holding on and keeping the car under control because the worn out bushings, open diff, and tiney sway bars the rear end starts to sway on you.



basically, its fawking awsome, as long as i keep it running good. these stupid old harnesses and connectors make bad connection. and my original soldering job didnt last very long had to re-do it.

 

^^^ You should get that car dyno'd.

 

<<< ya, I want to know what that Honda is putting down!

 

well, if dyno runs werent expensive i would. lol. i guess they arent that bad for a couple pulls. but still. id rather wait. i think im going to try to find the 240sx tranny ive been talking about getting. anything thats 5speed and farily straight swap, this 4spd thing is killing me!!!!!! it just robs everything from this car. and id like to stick an R200 up there, but id need some half shafts. and does anyone know if the 260Z shares the same stub axles as teh 280Z or with the 240Z cause i know they are different for some reason, i think the bolt pattern is a little off or somthing and the amount of splines in it to or something....

 

$50-$80??? Bring some friends and then they'd prolly even discount it!

Yeah... keep waiting... then you'll never have to prove it makes 170hp. They do dyno pulls in 3rd or 4th, so your 5th gear cop out won't save you on that one.