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RX7 680cc injectors 
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N00b
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Joined: Wed Mar 04, 2009 3:13 pm
Posts: 19
Location: nor cal
Post RX7 680cc injectors
me an one of my friends were hearing a lot of talk about these injectors, but not a whole lot of solid info on them. Lucky for me, my friends dad has 4 of these old RX7's that have the larger injectors. They're only found on the first generation 84-85 GSL-SE models with the 13b engine. They will have the ORANGE tops if they are the 680's. The impedance is the same so you don't need to add a resistor pack or do anything with that. I pulled off 6 of them off of non running cars and sent them to a shop to be cleaned. They charge about $14 per injector and replace anything that needs it. Awesome communication and shipping also. :mrgreen:

so any way the print out shows that they actually flowed 780-800 cc/min at 43.5 psi, which makes them even bigger than I expected. But this was ok since I have DSMLink, but my friend was saying that it could be a problem for SAFC users.

I compared the stock injectors side by side with the "680's" and they seemed identical besides the cap on the 680's is a little longer. They still fit right into the fuel rail and the head just fine though. No modding is necessary to make them fit besides tuning for them. After I dialed them in using DSMLink, my settings were -40 global and 0 deadtime. This is off a bit since my AFPR broke :cry: and I'm running the stock one for now. It is pretty rich at idle but the fuel trims are inline and only the lowest airflow slider is moved down to -1%.

Note that the below model year RX7 are direct drop in injectors for DSMs (low impedence and square plug):

84-85 13B N/T - 680cc Orange Top P/N 195500-0900
86-87 13B Turbo - 550cc Tan Top P/N 195500-1370

http://i132.photobucket.com/albums/q39/ ... oooo-1.jpg

http://i132.photobucket.com/albums/q39/ ... 188res.jpg

just thought i would share this info that worked our for me cuz it that was passed down 2 me

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99 GS-T


Thu Mar 05, 2009 3:55 pm
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Talon of Doom
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Joined: Wed May 23, 2007 10:07 am
Posts: 3615
Location: Long Beach
Post Re: RX7 680cc injectors
good job. Thanks for the great info. Good budget upgrade for those out there who are looking for good injectors for a cheap price.

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Thu Mar 05, 2009 4:49 pm
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N00b
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Joined: Wed Mar 04, 2009 3:13 pm
Posts: 19
Location: nor cal
Post Re: RX7 680cc injectors
no problem jus looking out an im glad i can help out ill b posting new thing in the future :mrgreen:

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99 GS-T


Thu Mar 05, 2009 5:17 pm
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Joined: Tue May 22, 2007 7:22 pm
Posts: 689
Location: Oxnard Shores
Post Re: RX7 680cc injectors
nice find dude! ima hit the junkyard now

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Thu Mar 05, 2009 7:27 pm
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