Anyone know if they will fit in the VG's fuel rail?

 

they should from certain years..not sure which..i think its 90-93..

 

must be 90-94 then because there are setups for 90-94 and 95-99. now i just have to find some good deals on 555's

 

how much power are u pumping that you think u need 555cc injectors?

 

whats the latest craze with 555s?? they are overkill, like Dan is suggesting...370s and the right programing to run them are good(and proven) into the low 400s easy

 

Those are for when i get my tranny and engine built up.

 

**** this guys got stock 240cc injectors and putin down 456hp to the wheels although he needs bigger i think 370cc will work fine

hlh0501
Maxima Brainwashed

Joined: Sep 2000
Location: Louisville, KY

Year: 95
Color: metallic navy.
Trim: SE




Report Post | IP: Logged
Quote:
--------------------------------------------------------------------------------
Originally Posted by JAY25
are you using stock injectors?

stock motor?

for those trap speeds I know your dynoing well over 320HP and a they cant handle over 320HP after 6K with a MEVI.
--------------------------------------------------------------------------------

jay: first of all a side note, your car looks sweet! saw it in the atl vids. to answer your questions, yes stock motor and stock injectors (240's?). I am controlling fuel delivery pretty much from a vortech FMU - so high fuel pressure. I dont even have a safc on the car right now I do start leaning out a little over 6000 I noticed on the dyno. off the charts rich (below 10:1) up to 6000 then it climbs to almost 14:1 I believe by fuel cut. So, on the track I shift at ~6000rpm until 4th gear I have to wind it all the way out bc I dont want to have to shift into 5th before the finish line.

dave: the funny thing about these tires... i used to just put the cheapest tires i could get on my stock wheels, bc whenever i had them on my car it was just constant spinning, i mean merging on the interstate at 65 if i gunned it i'd usually spin my junk 15" tires. I went in and requested the econo-special, the cheapest tire they had - to put on my 15's. I got the daytons for 65$ each mounted balanced everything. 400 tread rating. the things have lasted FOREVER and I run 2.1 60' every single time on them (unless i want to tear on my clutch then i get 2.0 but its not worth it)

__________________

'95 Nissan Maxima 5SPD (FOR SALE)
On 10psi: 456whp/460tq, 119mph 1/4

 

those things are running on the edge though. i'd like to have some safety so i won't have to tear down an engine more than once.

 

ok he's running 240cc pumping 450hp

555cc is more than DOUBLE 240cc.

again i ask how much power are you making that you think you need that?

are you going to be pushing over the 500hp mark?

 

i'm going to at least try getting that high. if not, i will use these on the project maxima i'm planning on getting.

they are running those injectors really hard. someone said in the FI forum that you can generally run 40% higher than the rated rate. So, 240cc multiplied by 1.4 yields 336. So they can run at about 336cc safely. On a site that i found if you divide the cc per minute by 5 you'll get the amount of horsepower an injector can handle approximately. Divide 336 with 5 and you get 67.2. Since you have 6 injectors you will multiply 67.2 with 6 to get 403.2 which is approximately the limit of those injectors. So, like i said those injectors are getting run very hard pushing that kind of power.

 

lets see here.
do you have a turbo?
are you running over 13 psi?
do you have a 300 shot on a dry kit?
do you have a 255 l/hr pump?
high compression {18:1}

if not.
why do you need them?

 

hes boosted...VGT swap...still won't really need 555s though

 

on a side note are the 370cc TT injectors as prone to failure as maxima injectors

 

Maxima injectors are prone to failure??

 

the VG30E injectors from 89-92 are very failure prone. so much so that they can not even be rebuilt 95% of the time. Most nissan injectors of that era just go bad and can normally be rebuilt but not the maxima's.

 

interesting...my guess was it was just based on old age/high milage.

 

Like DA-MAX said, I have a VG30ET in my maxima. At the moment, I won't need them but my goal is to at least hit 350 hp to the wheels on my daily driver. If our trannies have about 15% drivetrain loss then that is approximately 411 hp at the crank. If you search different sites for the Nismo 555cc injectors they say they will support 400-600 hp on the Z32 TT. Since I'll be in the 400 hp range (crank) these should give me a good safety margin. More than likely I won't go with Nismo but I'm planning on getting about 50 lb or so injectors (which is about 510cc). I'll be getting an eprom for my ecu soon that should handle 555cc injectors, the Z32 maf, and will have 7000 rpm redline (kind of like the JWT setup). I already bought a Walbro 255 lph high pressure fuel pump so that is covered. For the turbo upgrade I'm looking at getting a T3/60-1 for some big boost. I'll definately be getting some big injectors for my project maxima though. I'm looking at 555cc to possibly 720cc for it.

 

well when you buy them here is a great place to get them...

http://cgi.ebay.com/ebaymotors/ws/eB...tem=2431488283

$600 and they have METAL pintle caps! Mardigras is using these on his new project, says they are great quality!

 

yeah, i've been eyeing those for a long time. they seem very interesting. i like the part how he says it idles better than other big injectors. i just wish he was selling 6 in a set.

edit: whoa! kickass! the auction is for a set of 6! thanks for the link man!

 

hold on tiger..those are for 95+ 300ZX cars. the 90-94 have a different harness compared to the 95+.

the 3rd gen VGs have the harness from 90-94.

there's really not a pintle cap..it's more like a fogger/sprayer. it's less prone to clogging and etc.

4th gens can use these because they have the harness that's similar to the 95+.

also i don't think you can just hack a harness and have it all work...different signal/voltage going to them.

 

interesting....well someone try hacking the harnesses....who wants to be the Nissan guinea pig?? is it just be an OBD difference or something?? I know some of the OBD2 Honda guys have simply chopped the OBD 2 clips off and wired in OBD 1 clips to run DSM 450cc injectors.

 

dang. are you talking about the connector? they appear to be oval shaped, which i didn't notice before. is that how the 95+ TT is?

about compatability as long as they are high impedence injectors (10-16) they should work fine, right? Now if they are low impedence then there would be come problems i would think.