PDA

View Full Version : What size injectors are these? Top Feed JGY Rail

MoJoo
03-24-2013, 01:13 PM
I bought this car used from a guy that bought it from someone else and didn't really know much about the car. Need to know what kind of and size injectors these are ASAP.
Have searched and searched and i don't think they're nissan... is there any way to tell what they are without pulling the rail and injectors?
52354
MoJoo
03-24-2013, 01:48 PM
s13 redtop sr20det with JGY top feed rail


Posted from Zilvia.net App for Android
ray666
03-24-2013, 01:55 PM
There should be serial numbers on the injectors. I would call jgy with the numbers to find out what you got.
tx240ss
03-24-2013, 01:59 PM
they look like my jgy injectors... they are probably 550s.. but check with jgys..
MoJoo
03-24-2013, 02:08 PM
yeah i got em. they're 550cc. thanks for the help.


Posted from Zilvia.net App for Android
OrangeVirus1
03-24-2013, 02:10 PM
well lets see they are two tone so probably 100000cc
codyace
03-25-2013, 09:49 PM
They are MSD (Rochester style) 50lb injectors. Not 550cc. Not a huge difference, but one to keep in mind.
MoJoo
03-25-2013, 09:52 PM
They are MSD (Rochester style) 50lb injectors. Not 550cc. Not a huge difference, but one to keep in mind.

misread the tiny serial number the first time, looked em up and they're actually 75lb's.
Lol. The surprises of buying someone elses project...
codyace
03-25-2013, 10:02 PM
misread the tiny serial number the first time, looked em up and they're actually 75lb's.
Lol. The surprises of buying someone elses project...

72lbs :D


I was gonna suggest that, but figured it was the more common 50lbs that have been around for decades.


Just remember when swapping injectors, the 72lbers have dropping resistors installed somewhere on the injector signal wires. Most people install them just after the ECU plug, but just be aware that you will not be able to 'swap' to common high impdence injectors without removing those resistors.
MoJoo
03-25-2013, 10:14 PM
good to know.. i suspect a leaky injector anyways... would make a good excuse to swap em lol
codyace
03-26-2013, 06:23 AM
Make sure the O rings have seated, those injectors while old dinosaurs generally don't leak.
OutToWinPAHC
03-26-2013, 06:25 AM
When in doubt, send them out for bench testing
fliprayzin240sx
03-26-2013, 03:27 PM
^^^This...plus its always a good idea to get them reconditioned, specially when you're not sure of the history of the car.