What size injectors are these? Top Feed JGY Rail - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

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?
486278_10200907901042862_1278479564_n.jpg

MoJoo · 03-24-2013, 01:48 PM

s13 redtop sr20det with JGY top feed rail

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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.

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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

Quote:

Originally Posted by codyace

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

Quote:

Originally Posted by MoJoo

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

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.

03-24-2013, 01:13 PM	#1
MoJoo Join Date: Jul 2012 Location: North Houston Age: 28 Posts: 9 Trader Rating: (0) Feedback Score: 0 reviews	What size injectors are these? Top Feed JGY Rail 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? 486278_10200907901042862_1278479564_n.jpg

03-24-2013, 01:48 PM	#2
MoJoo Join Date: Jul 2012 Location: North Houston Age: 28 Posts: 9 Trader Rating: (0) Feedback Score: 0 reviews	s13 redtop sr20det with JGY top feed rail Posted from Zilvia.net App for Android __________________ rollin'

03-24-2013, 02:08 PM	#5
MoJoo Join Date: Jul 2012 Location: North Houston Age: 28 Posts: 9 Trader Rating: (0) Feedback Score: 0 reviews	yeah i got em. they're 550cc. thanks for the help. Posted from Zilvia.net App for Android __________________ rollin'

03-25-2013, 09:49 PM	#7
codyace Post Whore! Join Date: Dec 2004 Location: Poconos, PA Age: 39 Posts: 8,030 Trader Rating: (58) Feedback Score: 58 reviews	They are MSD (Rochester style) 50lb injectors. Not 550cc. Not a huge difference, but one to keep in mind. __________________ *Want Air Conditioning in your SR20 Swapped car? Check out www.sr20acbrackets.com for more information! Quest Alternator Conversions for SR20!* Check my Group Buy! Tired of lousy internal gates? Go external wastegate with one of my manifolds, Check out my group buy

03-25-2013, 10:14 PM	#10
MoJoo Join Date: Jul 2012 Location: North Houston Age: 28 Posts: 9 Trader Rating: (0) Feedback Score: 0 reviews	good to know.. i suspect a leaky injector anyways... would make a good excuse to swap em lol __________________ rollin'

03-24-2013, 01:55 PM	#3
ray666 Zilvia Member Join Date: Jun 2008 Location: milton,FL Age: 41 Posts: 207 Trader Rating: (6) Feedback Score: 6 reviews	There should be serial numbers on the injectors. I would call jgy with the numbers to find out what you got.

03-24-2013, 01:59 PM	#4
tx240ss Zilvia Member Join Date: Apr 2007 Location: Houston Posts: 176 Trader Rating: (5) Feedback Score: 5 reviews	they look like my jgy injectors... they are probably 550s.. but check with jgys..

03-24-2013, 02:10 PM	#6
OrangeVirus1 BANNED Join Date: Jan 2013 Location: PyongYang DPRK-N. Korea, Province 2 Posts: 1,236 Trader Rating: (0) Feedback Score: 0 reviews	well lets see they are two tone so probably 100000cc

03-26-2013, 06:23 AM	#11
codyace Post Whore! Join Date: Dec 2004 Location: Poconos, PA Age: 39 Posts: 8,030 Trader Rating: (58) Feedback Score: 58 reviews	Make sure the O rings have seated, those injectors while old dinosaurs generally don't leak. __________________ *Want Air Conditioning in your SR20 Swapped car? Check out www.sr20acbrackets.com for more information! Quest Alternator Conversions for SR20!* Check my Group Buy! Tired of lousy internal gates? Go external wastegate with one of my manifolds, Check out my group buy

03-26-2013, 06:25 AM	#12
OutToWinPAHC Zilvia Addict Join Date: May 2007 Location: Florida Posts: 746 Trader Rating: (6) Feedback Score: 6 reviews	When in doubt, send them out for bench testing

03-26-2013, 03:27 PM	#13
fliprayzin240sx Man w/ CTSV & a Car Seat Join Date: Aug 2002 Location: Tampa Posts: 17,998 Trader Rating: (19) Rides Gallery: fliprayzin240sx Feedback Score: 19 reviews	^^^This...plus its always a good idea to get them reconditioned, specially when you're not sure of the history of the car. __________________ If you think Zilvia has too many assholes... CLICK HERE!!!