Joey Mitchell

Is there not a way to tell what size injectors are in my y7? Can't find any info on here or Google about distinguishing injectors. They are OEM Honda injectors I do believe because they are KeyHin's, but the previous owner swapped out the original y8 for y7 and there is a lot of mix matched parts. I see no other markings on the injectors, but they still are on the car. I have a set of injectors off of a z6 I believe to be 240cc KeyHin's, could I use those maybe and pull an injector off of my y7 and compare the hole size to see if the ones on my y7 are 180cc or 240cc? Would there be a visible difference? Really need to know what size they are as I am collecting pieces for my mini me swap. Any input appreciated!!!

TomCat39

Everything I've read, there doesn't seem to be any indetifying marks on oem injectors.

Your Z6 injectors don't have the same plug style as the Y series injectors. OBD1 versus OBD2.

I'm not sure if 6th gen worked the same as 5th gen, all 5th gen is 240CC except VX and USDM CX.

I'm thinking the 6th gen is the same with the exception being the Y5 vtec e motor.
You can check online honda parts sites and compare part numbers between a Y7 and Y8. Injectors might just be the same part.

JRCivic1

Y7 injectors are 195cc.

TomCat39

And with no identifying marks..... no fun.

Joey Mitchell

Really appreciate everyone's input. I'm going with the z6 head/im so I'll be running the obd1 z6 injectors anyway. Up until last night I wasn't sure whether I was going p2p or p28, but I'm def going p28 at this point. I'll prob just splice the z6 injectors into my harness vs buying obd injector jumper harnesses. I think it's kind of dumb that there is no part numbers or anything to distinguish OEM injectors. But there is still a chance I could have y8 injectors on my y7, just because so many mixed matched parts on the car and the car does seem to run a little rich. Doesn't really matter though as they will not be used for the swap at this point, however I am still curious. So if the z6 are 240cc and if the ones in question are indeed 195cc y7 injectors, would the hole in the injector be sizably smaller than the z6 injectors?

DaX

iTrader: (1)

Probably not worth it, but you could send them out and have them flow tested.

JRCivic1

"Some" 195cc OBD-2 fuel injectors have a strange shaped/stepped plastic shroud around the tip to differentiate them from the larger 235cc injectors (some call these 240cc... test pressures actually dictate the difference. This size description of 235cc/240cc is universally accepted as the same). ALL 235cc injectors have a smooth rounded plastic nose/tip that is either green/grey or dark brown in color. If the tip is more of an opaque (see through) orange/copper/brown color... they are also likely to be 195cc injectors. The plug style combined with the tip shape and color can give you enough information to have a better than average chance of being right... but as DaX stated, the best way to KNOW is to have the set flow tested to be sure. This gets them cleaned and matched anyway... and since you want to rely on them, this is probably a really good idea anyway.

Joey Mitchell

Thanks daX and jrcivic, that will be useful info when I pull my head and get ready for the swap. Even though at this point I think I'll just go with the z6 injectors, it'll be nice to know what injectors I've been running. And as far as the flow test to get the injectors clean, is this something a machine shop would do or just a regular mechanic shop? Of course now I'm going to go look this up and see if it is something I can perform myself. Or at least a good cleaning of the z6 injectors I'm going to use. They came out of a known running car, but it has been sitting for approx a year. Thanks again guys.