RX7 injectors

[Clint32]

When putting 13B turbo injectors on a rb20 do you need to change the plugs or anything else to make them fit.

[meggala]

not that I'm aware of if you find differently please let me know and I'll add it so my injeoctrs onfo they look the same.

jsut pull one out to see.

cheers

[Clint32]

I tried today and the plugs need to be changed to fit the injectors. Hope i can find some tomorrow or i will not be happy, anyone got any ideas where to go, wreakers hopefully will have some.

[Warpspeed]

Mazda rotary injector plugs are the same as Mazda 323 and Laser injector plugs. These may be easier and cheaper to find.

[Clint32]

Thanks that may help, at the moment im just desperate to get some.

[Steve]

Does the fuel rail need modifying?

[Fast31]

no the fuel rail does not need to be modified.

[Clint32]

Unfortunately there are a few different plugs, series 4 injectors are the same as GTR and rb20 ones, the series 5 ones are different, ive been told they may be the same as rb25 ones but i cant be sure they look similar on the fuel rail, anyone have any pics of some or some for sale.

Unfortunately the places im sure will have some are on holidays till the 6th so i may have to wait unless i can find some.

[Warpspeed]

The injectors I have are 550cc high impedance, purple in colour. These are straight feed for use with RB26. I believe they are series 4 or 5 (not sure) 13B turbo injectors.

The plugs I used are from a Mazda/Ford B6 engine, and are a perfect fit.

[Clint32]

The purple ones are 550cc low impedence from a series 4, they are what you need for a gtr, are the plugs the same as the gtr injectors, i though they were.

The series five ones are red

[Joe]

RX7 injectors are really notorious

they have 2 type of part numbers

& are either in red or a pinkish colour (maybe from age the colour fades)

Part numbers are XXXX-2020 or XXXX-1370 (i think)

Funny thing is my mate has a 3SGTE & there injectors are low impedence, & one of his mates has a RX7 series 4 injectors for sale, he bought it without bring a multi-meter because the injectors came out of the s4 engine, once he got it home he tested the ohm with a multimeter & it rated at 13 ohm hence making them high impedence, just coz some say its a series 4 injectors it doesnt mean its low impedence.

If you plan on buying them MAKE sure you bring a multi-meter with you when you buy it.

Regarding installation, i have heard they fit stright in, but it they dont well a fuel rail dont cost much 2 buy about $100-$150

Hope it helps,

Joe

[meggala]

I have had some series 5 injectors they had the red top and were the 1370 number they were high impedance

meggala

[Clint32]

The ones i have end in 2020 in the part nunmer, they have a red/purple top and the different shape plug. I havent tested them but the series 4 ones are pink(i think) and have a square plug the same as rb20/rb26 injectors.

[Warpspeed]

The Injectors I have are the same as Joes mate. They are purple, straight feed, and exactly13 ohms. So it seems the series 4 injectors can be either red or purple.

I have often wondered if red and purple are actually the same colour as seen by different people

[Joe]

to be honest dont trust colour tops on rx7 injectors but trust the multi-meter

[Clint32]

Ok the rb25 plugs are slightly different and will not fit. But i did find some from a mazda B5 engine that fit the series 5 injectors.

[Clint32]

Does anyone know if it matters which way the wires are connected to the injectors?

[Warpspeed]

Th wires can go either way around, no problems.

[Clint32]

yay injectors are in, fitted in no problems just needed to wire in new plugs.

Meggala you can put that on your site so people will know in the future and wont be running aroung going mad looking for them at the last minuite.

[raist60]

This might not apply but on the R33 Injector loom you ahve a common ground for all injectors so it does matter about the polarity of the injectors. So just be careful... And the plugs for the RX injectors any injector joint will have em, there the same as commodore ones. (Well thats what i used anyway)