300ZX (Z32) Performance / Technical Discussions related to Turbo charging, Supercharging, Engine, ECU, exhaust, and etc. performance enhancements and Techical related.

fuel injectors

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Old 08-17-2010 | 04:53 PM
  #1  
hardenstine's Avatar
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Joined: May 2010
Posts: 84
From: Orlando
fuel injectors

does it matter what fuel injectors i get will they all fit or do i have to do the year or whether it TT or NA and all that stuff or can i use 96 or 93 in a 92
Old 08-17-2010 | 08:24 PM
  #2  
ZLover4Life's Avatar
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Joined: Aug 2005
Posts: 3,316
From: Naperville, IL
Did you do any research at all before starting this thread?

Your 92 has pintle injectors, you cannot install the 94+ (or maybe 93+... either way, they're differentiated in the buying options) injectors without either 300Degree fuel rails meant to fit 6 new style injectors, or the updated fuel rails and a machined lower plenum. You'd also need the newer connectors. (And you absolutely couldn't just replace a few bad injectors with the pintle-less... you'd have to do the full retrofit.)

And yes, TT and NA matters. TT injectors are 370cc/min, NA are 259 or 279 cc/min. If you install TT injectors in an NA, car you'll run rich and likely run like ****; NA injectors in a TT car will run lean and likely detonate.

Seriously... all this has been discussed at length on here and TwinTurbo.NET.
Old 08-17-2010 | 09:50 PM
  #3  
domsgarage's Avatar
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Joined: Nov 2003
Posts: 851
From: NJ
yeah bro, come on now.

when it comes to the lower intake. i know it needs to be machined for the newer style injectors, but my question is, can the lower intake from say a 93+ (late model 93s use the newer style) be used in an earlier model to make everything fit right? I know the timing belt pulley is on the end of the lower intake but maybe that doesnt matter?

I havent searched this, ill admit. But im going to eventually do the injectors on my motor and if i can just swap intakes id rather do that.

thanks
Old 08-17-2010 | 09:55 PM
  #4  
ZLover4Life's Avatar
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Joined: Aug 2005
Posts: 3,316
From: Naperville, IL
You can certainly just get the newer lower plenum and it'll bolt in just fine... most people just find machining more convenient (I think there's a template floating around the internet somewhere or at least details that you can give to a machine shop to have it cut properly).
Old 08-17-2010 | 09:56 PM
  #5  
domsgarage's Avatar
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Joined: Nov 2003
Posts: 851
From: NJ
i already have the lower plenum, thats why i was curious.

cool, thanks.
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