Injectors

kneedragger85

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Sep 9, 2008
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Boulder, CO
MKIV turbo (2JZ-GTE) injectors are 550cc side feed (JDM's are 440cc) and will not fit the 7m fuel rail.

MKIV non-turbo (2JZ-GE) injectors are 330cc top feed and will fit the 7M fuel rail.
 

radiod

Supramania Contributor
Dec 13, 2007
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Abbotsford, BC
kneedragger85;1777527 said:
MKIV turbo (2JZ-GTE) injectors are 550cc side feed (JDM's are 440cc) and will not fit the 7m fuel rail.

MKIV non-turbo (2JZ-GE) injectors are 330cc top feed and will fit the 7M fuel rail.

Just so he doesn't get confused, the 7M-GTE has 440cc top feed, so taking the 330cc top feeds from the 2JZ-GE would be going backwards and would likely result in you needing much more than just injectors.
 

Tony

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Jul 12, 2010
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hertford
Thanks for the quick responses. The reason I asked is because found some for sale that came out of a 94 supra turbo but they are aftermarket 725cc and the guy sent me a pic and they are top feed. Wasnt his car that they came from and didnt know if they were low or high impendence. So other than that since they are top fed they should work?
 

hvyman

Dang Dude! No Way Man.
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Apr 17, 2007
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Unless you have 450+hp those are way over kill.

And all you need is a ohm meter to see if there high or low imp.
 

radiod

Supramania Contributor
Dec 13, 2007
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What sort of electronics are you using to tune for different injectors? The Lexus AFM mod won't work with those if that's what you're thinking. 725cc injectors are definitely overkill, but on the other hand they will work just fine if you can tune it properly.
 

Tony

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Jul 12, 2010
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hertford
Yeah, i do have the lexus afm. Thanks for the help. I could have got them for a hundred bucks so thought it would be worth my while. Thanks for not letting me make a hundred dollar mistake though.
 

Dan_Gyoba

Turbo Swapper
Aug 9, 2007
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Alberta
www.gyoba.com
http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?Section=FI&P=83

Check with an ohmmeter. 7M-GE (High impedance) will check in at ~13.8 ohms. 7M-GTE injectors (low impedance) will check in at 2.0~3.8 ohms.

Low impedance needs the resistor pack, high impedance doesn't. Low impedance are usually faster and more precise. I'd pretty much put the dividing line at 5 ohms with the meter, but I recall that there's practically nothing that should test between 5 and 10 ohms when working normally.
 

aaron_arthur

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Jul 30, 2008
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London
so the 7M-GTE injectors are low impedance, and you say you need a resistor pack for low impedance injectors, if the 7m-gte is low impedance wouldnt low impedance injectors be plug and play with the 7M-GTE or that they need the resistor pack which would make the high impedance injectors plugand play?

just trying to clairify as first time reading wasnt 100% sure what you ment by that.