what injectors are these? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

lucas240sx · 12-21-2011, 01:13 PM

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 · 12-21-2011, 05:21 PM

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 · 12-21-2011, 05:58 PM

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.

steve shadows · 12-21-2011, 09:03 PM

Quote:

Originally Posted by 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.

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

rb25_s13*CHUKI · 12-21-2011, 06:06 PM

S15 sr Injectors? maybe?

sr20sean · 12-21-2011, 09:10 PM

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

lucas240sx · 12-22-2011, 08:12 AM

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

ill look into the free flow test
thx again

12-21-2011, 01:13 PM	#1
lucas240sx Zilvia FREAK! Join Date: Sep 2006 Location: shawnee,okl Age: 38 Posts: 1,303 Trader Rating: (16) Feedback Score: 16 reviews	what injectors are these? 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

12-21-2011, 05:21 PM	#2
steve shadows Post Whore! Join Date: Aug 2003 Location: LA and OC Posts: 8,202 Trader Rating: (5) Feedback Score: 5 reviews	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 __________________ Like Me on FaceBook !

12-21-2011, 05:58 PM	#3
cotbu Post Whore! Join Date: Sep 2005 Location: SWFL Age: 50 Posts: 3,318 Trader Rating: (3) Feedback Score: 3 reviews	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. __________________ LoverTechnologies "Half Broken Things!" Last edited by cotbu; 12-21-2011 at 07:40 PM..

12-21-2011, 06:06 PM	#5
rb25_s13*CHUKI Post Whore! Join Date: Mar 2007 Location: Cali Age: 36 Posts: 2,759 Trader Rating: (16) Feedback Score: 16 reviews	S15 sr Injectors? maybe? __________________ Obliterate

12-22-2011, 08:12 AM	#7
lucas240sx Zilvia FREAK! Join Date: Sep 2006 Location: shawnee,okl Age: 38 Posts: 1,303 Trader Rating: (16) Feedback Score: 16 reviews	thx guys for the input and ill post on that thread you sent me ill look into the free flow test thx again