what injectors are these?

[lucas240sx]

i have red cap injectors in my s13 sr fuel rail
red cap is ka
the number on the injector cap is (0 or o)f553429 A46-00

i have sr injectors to replace but im just curious to know what these others are?
thx

[steve shadows]

Well...usually if they are redcapped injectors dropped into an SR Rail they would be 740CC INJ

For aftermarket Denso/Nismo style HIGH IMPEDENCE Side Feeds, which work on KA, SR and usually VG it usually goes like this (for aftermarket)

SARD RED needs collars to work-850

RED- 740
YELLOW- 550
PURPLE - 370

[cotbu]

The injectors could also be modified 270's, take a look at the pintle side and see if the holes look drilled, out of sequence or just not machined perfect. Another test you could do is a minute flow test. I think the 270's should be 300 or so cc's or ml. I tested both 370 and 555 like this and the 370's were 400ml and the 555's were 600ml. It's not rocket surgery but it'll give you a clue to what you might have. Also you could send them out to be flowed but making a jig is free.

[rb25_s13*CHUKI]

S15 sr Injectors? maybe?

[steve shadows]

The injectors could also be modified 270's, take a look at the pintle side and see if the holes look drilled, out of sequence or just not machined perfect. Another test you could do is a minute flow test. I think the 270's should be 300 or so cc's or ml. I tested both 370 and 555 like this and the 370's were 400ml and the 555's were 600ml. It's not rocket surgery but it'll give you a clue to what you might have. Also you could send them out to be flowed but making a jig is free.


This is true...thanks to the floor of crap re-drilled crappy injectors flooding the market...I would ask that the companies that re-drill and do the poor mans modification to make them "flow" more would at least color them so they match the rest of the denso updated injectors etc just a thought...humph

[sr20sean]

http://zilvia.net/f/chat/174916-identify-thread.html

[lucas240sx]

thx guys for the input and ill post on that thread you sent me

ill look into the free flow test
thx again