Anyone know if the J30's fuel injectors are the same (or close to) the injectors in a 92 maxima VE motor? I think the connectors are different, but I can deal with that. All I care about is that they fit the same mounting and are around the same flow rating.

 

J30s use a VG30DE motor. Use the correct injectors for your engine. UNLESS are well versed in how injectors work, don't even try it. Even the boosted guys don't cut/solder new connectors in.

 

I am very well versed on fuel injector technolgy, all I need to know is the form factor, flow rate, and impedence. As for new connectors, my company designs and produce the engine harnesses for 95% of the worlds vehicles, I can handle the connector change without anyone ever noticing I did anything.

 

Hmm it's odd that you wouldn't know the J30's injector specifications already. Also why use the J30 units? There are plug and play injectors that don't require new connectors. ie.. why ice skake uphill?

 

I found a set on ebay for cheap, thats why I was thinking of useing them. As for being odd I wouldnt know the specs on the J30, I am not quite sure why I would, I would have to say there are over 10,000 different fuel injectors out there, I can't say I know the flow rate on all of them. I know they look like they are the same form factor from the picture, and I know the connectors are different(no biggy) but the spec I need that isnt available by looking at a picture, is their flow rate. I.e. 230cc, 320cc, 19pph, 21pph, etc. I am not sure if you guys here are the "into" the nitty gritty of the Maxima, not many people are. I can tell you the flow rate, pintle size, spray pattern, and form factor for every dodge magnum motor from 92 through 2004, but that cause I work with them a LOT is all.

 

Well for one, I believe the na Z dervived engines used injectors with a different flow rate. So even if you were able to get them going(assuming they fit/ohm ratings are compatible etc...), your car won't run correctly w/o modifing the ecu, doing some odd sizing tricks to the maf or fooling with the fuel pressures. All of which would be useless to do on a NA ve just because you saved some $ on some injectors not originally designed to fit/connect to a VE.

 

I guess you are not understanding where I am getting at, I was hopeing to find out if someone knew what the flow rating of the injectors were. I am not going to buy them if they are not the same flow as the stockers. I am not looking at the TT ones, those must be larger than my VE ones. If they flow the same, I will get them and use new connectors. I am not sure why you are cuting me down on this one, I am just trying to save myself a few hundred bux here because I may have a winner, not reinvent the wheel.

 

What I'm trying to say is that I believe the na Zs use a different rate injector. NA Z = J30 engines. I'm not cutting you down, I'm trying to explain.

 

OK, I was unclear that the J30 used a Z motor, I guess that makes sense since they are RWD, arent they? Are you sure the non TT Z uses a different flowed injector than the VE though, I am sure the TT uses a higher flowing injector than the non TT of course.

 

the J30 is fully interchangeable with the 92 and later maxs.
the J30 also shares the injector with the 94 up SR20DE.

 

flow rate on an NA Z32 is 320cc, stock VE injectors are 270cc

 

well, the Z used a different injector than the J30.

 

That is wrong. Stock VE injectors are 240cc. They are the same injector as the 4th gen.

The stock z32 NA (VG30DE) injectors are 270cc. Trust me, I know. I am using a 300zx ECU in my car.

 

So? What's that got to do with knowing which injectors flow what rate? Just because you have something in your car doesn't mean it's working properly.

 

OK, so, whats the flow rate of a J30, or are you saying the z32 is the same?

 

hmm....i guess Matt's FAQ for injectors is wrong

Old style, bigger injectors:
90-94 TT 300ZX, 370cc
90-93 NA 300ZX, 320cc
89-92 VG MAX, 180cc or 190cc or something
NISMO 16600-RR701, 555cc

New style, smaller injectors:
95-96 TT 300ZX, 370cc
94-96 NA 300ZX, 320cc?
93-94 VG MAX, whatever cc
92-94 VE MAX, 270cc (flow benched by RC Engineering, Jeff's injectors after cleaning)
95-99 VQ MAX, 270cc (same P/N as VE injectors)
S15 Silvia SR20DET 480cc
NISMO 16600-RR543, 555cc
NISMO 16600-RR544, 720cc


I have a set of 4th gen injectors and a set of z32tt injectors i bought, i know the tt injectors are 370cc, but as for the 4th gen, i thought they were 270cc.

 

All I know is that the VE30DE has the same part number as the 4th gen injector. And the 4th genners show the flow rate to be at 240cc. BUT, then again Jeff's numbers show that he got an average flow rate of around 275. Which would mean that his injectors are around 270cc? But why would the 4th gen injectors have 240cc? In my past searching experiences, it shows that 4th gens have a 240cc, but I am guessing they are wrong b/c Jeff actually did a flow test.

I looked a little closer at how I have my K value tuned with the Zemulator. And when I first started out, I entered the K value that's close to a 240cc injector. I zero'd out all the fuel enrichment numbers at idle and it ran very lean. So I changed the K value until I was getting a 14.5:1 AFR at idle. The injector flow rate I ended up with is around a 280cc injector.

So, that means that the VG30DE and VE30DE injector flow rate just might be very close to being the same in my personal experience.

Damonb, I am not 100% sure that the z32 NA injectors are the same as the J30 injectors. Don't take my word on it.

emeraldmax, yes this line is wrong ... "90-93 NA 300ZX, 320cc". It's 270cc according to Ash at Z1Motorsports. So that is what he wrote his Zemulator program to accomodate for, is 270cc injectors for the NA VG30DE. And 370cc for z32 TT.