injector questions
12-07-06 | 08:31 PM
#1
Thread Starter
Junior Member
Joined: Nov 2006
Posts: 37
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From: oklahoma
injector questions
alright so i recently bought an 88 n/a convertable with a bad rotor so i bought a rebulit motor while peiceing back together i did all the emmisions removal but left the bacv on for the air conditioner because it gets hot as crap in oklahoma.
when i put new seals and o-rings and new pintle caps on the injectors I think i ran into a little problem. When doing research on the fuel injectors because ive always had a carb on my vehicles there are 2 different injectors on the car? on the primary rail it says to have the purple ones and on the secondary rail a different color for the different flow rates? well all four of mine are red, have the same connectors but on the side of the injectors 2 of them say 824 and the other two say 825 if i remember correctly. i took them in to get cleaned and everything else but i dont know which injectors go in the primary and which ones go in the secondary rails or does it matter. Just a little confused. any help would be awesome...
when i put new seals and o-rings and new pintle caps on the injectors I think i ran into a little problem. When doing research on the fuel injectors because ive always had a carb on my vehicles there are 2 different injectors on the car? on the primary rail it says to have the purple ones and on the secondary rail a different color for the different flow rates? well all four of mine are red, have the same connectors but on the side of the injectors 2 of them say 824 and the other two say 825 if i remember correctly. i took them in to get cleaned and everything else but i dont know which injectors go in the primary and which ones go in the secondary rails or does it matter. Just a little confused. any help would be awesome...
12-07-06 | 08:46 PM
#2
Senior Member
Joined: Mar 2004
Posts: 485
Likes: 0
From: AZ/CA
INJECTOR INFORMATION
Mazda RX-7(Gen 1 and 2) Fuel injector identification guide
(Note that some injectors carry the same part number as others but plug styles and resistances can vary. Low impedance refers to 2-3 ohms, high impedance refers to 12-13 ohms.)
Year type impedance plug style plug notch position flow rating color part number
•• 84-85 13B NT low square center 680cc orange 195500-0900
•• 86-87 13B NT low square center 460cc red 195500-1350
•• 86-87 13BT low square center 550cc tan 195500-1370
•• 88 13B NT high square offset 460cc purple 195500-1350
•• 88 13BT high square offset 550cc purple 195500-1370
•• 89-91 13B NT high oval center 460cc red 195500-2010
•• 89-91 13BT high oval center 550cc purple 195500-2020
As a side note, replacement fuel injector clips (for wiring harness) can be obtained from auto parts stores to replace broken stock clips. I got the parts from autozone:
GP Sorenson part 800-9416 Fuel Injector Connector.
Mazda RX-7(Gen 1 and 2) Fuel injector identification guide
(Note that some injectors carry the same part number as others but plug styles and resistances can vary. Low impedance refers to 2-3 ohms, high impedance refers to 12-13 ohms.)
Year type impedance plug style plug notch position flow rating color part number
•• 84-85 13B NT low square center 680cc orange 195500-0900
•• 86-87 13B NT low square center 460cc red 195500-1350
•• 86-87 13BT low square center 550cc tan 195500-1370
•• 88 13B NT high square offset 460cc purple 195500-1350
•• 88 13BT high square offset 550cc purple 195500-1370
•• 89-91 13B NT high oval center 460cc red 195500-2010
•• 89-91 13BT high oval center 550cc purple 195500-2020
As a side note, replacement fuel injector clips (for wiring harness) can be obtained from auto parts stores to replace broken stock clips. I got the parts from autozone:
GP Sorenson part 800-9416 Fuel Injector Connector.
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