What size are s15 injectors?? The definitive answer thread!!

[redsx13]

So from research, i have gotten many mixed results. In Fact, the results where so mixed that this thread is almost poll worthy, haha. Some say 440, 444, 450, 480.

my thoughts say 440's

just to make this thread that much more specific, the model # of s15 injectors is A46-F52 an the color is brick read (almost brown)

[jr_ss]

You need to search harder...

http://cgi.ebay.com/ebaymotors...ories

[s14derrick]

he is right... the only answer i have ever heard is 480. that and if yu order oem it says its 480 lol

[redsx13]

this thread says 444 zerothread?id=7367

this says 440http://forums.nicoclub.com/zerothread?id=9295

this says 480http://forums.nicoclub.com/zerothread?id=191487

jr_ss, in the ebay link you provided it says s15 injectors will support 350+ hp which is complete bs, only way you can do this is to run your injectors at 60psi with an 95% duty cycle. why should i believe ebay.

my local tuner shop (g dimensions) tunes race cars all day and they say s15 injectors are 440, maybe they are wrong idk.
Modified by redsx13 at 5:58 PM 6/2/2009

[jr_ss]

I don't care what ebay says either. However, the seller of those injectors, is a performance oriented nissan parts distributor with positive feedback. It's in an OEM package and they sell it, they aren't going to mislead you about a product they purchase and sell to consumers. I don't care what G-dimensions says either, S15 injectors are 480cc injectors. GTIR injectors are 440cc injectors, if you don't believe it, that's your choice, another option, wikipedia it...

Here, I searched for you again... Don't mind the VCT Nissan's version of Honda's Vtec, we all know that the VVL is the equivalent to Honda's Vtec. http://www.nicoclub.com/sr20de....html

[s14derrick]

after some research i have saw a few different companies advertise NEW OEM S15 injectors as all 3 different flow rates.

[jr_ss]

after some research i have saw a few different companies advertise NEW OEM S15 injectors as all 3 different flow rates.

Find a nissan based performance shop/website, they'll have the most accurate information. As a matter of fact, follow the ebay link I supplied him with earlier and cross reference the numbers he supplied (A46-F52) to the pictures in that ebay link (FYI, the numbers are on the top of the injector in the brown plastic piece). They match and I'll take their word on them being 480cc's.

But 480cc's are weak, go with SARD 850cc's, you can run them and they'll idle like stock...

[s14derrick]

i believe you that they are 480s thats what i thought.. but multiple stores are selling 440s and saying they are s15. thats what is causing the confusion.

[redsx13]

you know what would clear up all this confusion, i took the injectors to a shop and had them flowed, or at least one of them. Than no one could argue with me. haha now you guys know my evil plan

But 480cc's are weak, go with SARD 850cc's, you can run them and they'll idle like stock...

that what im going to end up doing, but not until i upgrade my head gasket/studs. plus i already have the s15 injectors, so they will be fine for now.

[redsx13]

i really believed they where 480's until i saw this oem nissan parts website that says they are 444's

http://www.nissanparts.cc/catalog/?section=1028