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Old 12-17-2008, 01:02 PM   #1
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Default plug and play 440cc and 550cc injectors

dear all,

I did my best with the "search" function, but I need a confirmation from some injectors expert:

are these high impedance 440cc plug and play injectors?
Automotive Parts Network - Auto Parts :: Fuel Injectors :: PARTS :: Premium Remanufactured Fuel Injector - iNeedParts.com
(stock on 1989-1992 aspirated RX-7)

and are these high impedance 550cc plug and play injectors?
Automotive Parts Network - Auto Parts :: Fuel Injectors :: PARTS :: Premium Remanufactured Fuel Injector - iNeedParts.com
(stock on 1989-1992 turbo RX-7)

I'm asking because I'm pretty sure of it, according the plug and play lists I found on this site, but the seller says I'm wrong about flowrate... (maybe a different fuel pressure?).
I hope this thread will not be banned because of the links, it's just for reference...

by the way: if I want to use the smallest injectors possible for a 12psi boost on my 1.8l engine, do you agree the 440cc's are enough? the reason why I want to go with the smallest possible is that I believe they will make idling tuning easier, being them high-impedance i.e. worse in this respect.

thanks a lot.
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Old 12-17-2008, 01:15 PM   #2
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Be careful with the impedance of the 440s, as IIRC they came as low or high impedance under the same part # for different periods. It's been a while though...
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Old 12-17-2008, 01:33 PM   #3
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without a picture or part number what are we to go with?
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Old 12-18-2008, 04:02 AM   #4
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Quote:
Originally Posted by Braineack View Post
without a picture or part number what are we to go with?
don't the internet links in my thread work on your PC?
I tried them and they take me to the actual injectors I mean, picture included, anyway they are codes 14899 (supposed 440cc) and 14900 (supposed 550cc) on Automotive Parts Network - iNeedParts.com

thanks
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Old 12-18-2008, 04:17 AM   #5
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Humble, moderately educated noob. I like.

The 440s will do exactly what you want them to do. I can't see from the link whether they are low-imp or high-imp, though. Call them up and ask; they should know.
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Old 12-18-2008, 04:26 AM   #6
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Originally Posted by Savington View Post
Humble, moderately educated noob. I like.

The 440s will do exactly what you want them to do. I can't see from the link whether they are low-imp or high-imp, though. Call them up and ask; they should know.
thanks...

now if you would help me further...

1) what is a noob (I guess I know...),
2) do you mean that 440cc is a correct flowrate for my application, or that THOSE injectors mentioned in my link ARE ACTUALLY 440cc, and they will work?

sorry for looking (and partly being) silly, I would feel better in italian but I don't believe that is an option!

ciao
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Old 12-18-2008, 04:39 AM   #7
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I meant that 440cc is a good flowrate for your application. I can't tell whether those injectors will work because I don't know whether they are high-imp or low-imp.
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Old 12-18-2008, 07:40 AM   #8
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Quote:
Originally Posted by Savington View Post
I meant that 440cc is a good flowrate for your application. I can't tell whether those injectors will work because I don't know whether they are high-imp or low-imp.

my understanding is they are high impedance, as there is no argument with the seller on this; just they say they are a different flowrate (600cc for the "aspirated" ones!!!).

by the way, again: I know I am a noob but I don't know if I should be proud of it...


ciao
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Old 12-18-2008, 10:07 AM   #9
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Quote:
Originally Posted by corrado.sv View Post
don't the internet links in my thread work on your PC?
I tried them and they take me to the actual injectors I mean, picture included, anyway they are codes 14899 (supposed 440cc) and 14900 (supposed 550cc) on Automotive Parts Network - iNeedParts.com

thanks

Let me rephrase:




you're looking for these:

| | |

the first two share the same part number with the low-ohm version and are not plug and play.
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Old 12-18-2008, 12:47 PM   #10
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FWIW FM recommend High Imp 550's for similar power applications. The RX-7 550's are pnp and can be picked up relatively cheaply. I have the 550's fueling 6 psi in my 1.6 - duty cycle is a mere 23% at peak boost amd torque. The 550's will give you more headroom, obviously.
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Old 12-18-2008, 01:59 PM   #11
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And they'll idle worse. I am running 460s at 14psi and they aren't maxed.
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Old 12-19-2008, 01:34 AM   #12
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i went to rx7club.com and just found some rx7 460cc injectors for 75$ shipped
the 195500-2010 part number. cant wait to get them in
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Old 12-19-2008, 03:53 AM   #13
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ok, now it's clear even to me.
I will look for 195500-2010 code because I'm confident they will not be maxed out and make me feel a bit more comfortable with idling issues.
thanks alla for your help,

ciao
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Old 12-19-2008, 04:49 AM   #14
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Hm, that is a great post for injections... great guides....


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Old 12-19-2008, 06:48 AM   #15
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Quote:
Originally Posted by spikegomez View Post
Hm, that is a great post for injections... great guides....


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It's all there and more in the faq's

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Old 12-25-2008, 04:22 PM   #16
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ok, now please just one more help for me: for some reason I cannot work it out with people at ineedparts.com, can you please advice on where to buy the 460cc's (maybe on private mail...).
thanks again.
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Old 12-25-2008, 04:50 PM   #17
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some of us have picked up ours here RX7Club.com - Powered by vBulletin just set up a user account and post a want to buy ad for s5 89-92 non-turbo injectors.
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Old 12-26-2008, 06:48 AM   #18
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OK, but if it is sure that the naturally aspirated 89-92 RX-7 injectors will work for me, I can just buy them at Ineedparts, right?
after all if they are OEM remanufactured injectors, they must work, no matter what they say about flowrate, right?

thanks
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