my-sons rx7

Like the title says. I search & could not find any answers. Are some parts on the engine difference, because sometimes i look for stuff thay ask if its before june 87 or after. any info. would be greatly appreciate. Thanks in advance Tony

trochoid

iTrader: (6)

High and low impedence injectors, low before, high after.

vipers

iTrader: (8)

i thought it was 88.5 and 88????? werent all 87's identical????

trochoid

iTrader: (6)

Nope

Ricer240sx

iTrader: (3)

are low imp inj ok to run on a car that came with high imp stock??

torean

gotta wire in a resistor in with a low imp injectors if u wanna use it in a high imp system

NZConvertible

AFAIK the only difference was changing the low-impedance injectors (thi resistor) to high-impedance ones.

If you use low-impedance injectos with out resistors you'll fry the ECU's injectors drivers.

my-sons rx7

So the impedence injectors are the only difference. Thanks

Icemark

Injectors and minor trim differences (such as wheels were polished look, vs the painted grey or peuter found on the 87).

Ricer240sx

iTrader: (3)

ok, now, what date differenciates between 87 and 87.5??

Massive Retard

Where are the resistors located??

Ricer240sx

iTrader: (3)

well, turns out im safe afterall!! went out with my multimeter and tested the 720cc's and the stock 550cc's and both gave me 1.8 ohms!!!!

fastcarfreak

I guess before june 87 & after june 87

torean

ok, as far as i know high imp injectors are ~14ohms while low imp are ~3imps...how recently i bought resistors from rx7.com and were told that the 3ohm resistors will work.....

someone please explain this to me....3ohm injector plug 3ohm resistor = 14 ohm injector?

NZConvertible

It's one resistor pack, located just in front of the RHS strut tower.

I would be very wary of this advice...

Icemark

Bad guess...

June 87 started the 88 production...

Icemark

Mid January 87

torean

can anyone else chime in?....i was told that it would work...also there was a thread on how to fit the low imp injectors onto a s5......they also used the resistors from rx7.com...anyone else try this yet?

Massive Retard

Thanks, I was wondering what those were for, but I was too lazy to look it up in the shop manual.

my-sons rx7

Icemark then what was the break off for the low impedence injectors to high, my 87 t2 was made in 10/86 thats what it says on the door. what are better low or high impedence. and why. If you don't mine. btw. Thanks for all the help you give to everyone. Tony

Icemark

10/86 would be the early style with the resistors.

NZConvertible

6 ohms is about half the impedance of the stock high-impedance injectors. That means the amount of current (and hence heat) passing though the injectors drivers will be doubled. It will work for a while...

Flobb

i've had an 86, 87, and 88. one difference no one else has ever pointed out is that the coolant overflow resevoir is in a different spot.

because it matters darnit.

Icemark

yeah it (or the pick up for it) changed each year on 86/87/88.

my-sons rx7

what are better low or high impedence. and why. If you don't mine.