Who's WHo injectors?
 

What size injectors does my RX-7 use? What colour are they?
Year Engine Plug Size Colour Part #
84-85 13B NA, low square center, 680cc, orange, 195500-0900
86-87 13B NA, low square center, 460cc, red, 195500-1350
86-87 13B Turbo, low square center, 550cc, tan, 195500-1370
88 13B NA, high square offset, 460cc, purple, 195500-1350
88 13B Turbo, high square offset, 550cc, purple, 195500-1370
89-91 13B NA, high oval center, 460cc, red, 195500-2010
89-91 13B Turbo, high oval center, 550cc, purple, 195500-2020


What does the square offset vs. oval center means?

I am about to purchase a set; I need the ones with the square plug connector and must be high impedance.

Ummm Watson, you need to tell us what kind of 7 you have if you want us to tell you which. Or even easier, choose YOUR 7 in the list YOU posted and you'll have your answer. :)

Oval means oval shaped, Square means Aquare shaped ( for the connectors)

i think you answered your own question. now all you need to know is if your car is NA or turbo. i hope you are able to figure that one out...

What color are those red firetrucks............

What throws me off is the word square OFFSET (the offset in itself)

and the same thing with the oval center...

CENTER? OFFSET?

They could have just said plug, the terminology is not even geek terminology, makes no sense and random word.

I hate when engineers love to name stuff strangely for no aparent reason than I guess to make it sound complicated and expensive.

I never figure out that; If Pancha plancha con cuatro plancha, ¿Cuantas planchas tiene plancha? or ¿De que color es el caballo blanco de Napoleon?

they refer to the notch on the injector plug.

Centered = center notch
Offset = offset notch

Best bet for determining impedance is the shape of the plug and measurement with a DMM across the injector for Ohms of resistance.

As the author of the chart in question, I am making this face as I read this:

http://www.rotaryresurrection.com/kl...m/bigughh3.gif

With that said...

The injector has a notch on the plug/coil area where the plug goes onto it. This notch can be either in the center, or offset toward the right. That is what the table refers to.

Red