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				Re: stock 97 4.0 injectors?
				Posted: October 7th, 2011, 8:20 pm
				by Programbo
				SilverXJ wrote:Part number should be 0280156162.  At 3 bar they flow 24cc/23.61 lbs. They would flow right around 25 lb @ 49psi
  Is there any specific website you guys are using to get these ratings? The reason I ask is becuase I have been messing with injectors for a few years now and have found if you look at 4 sites you'll see 4 different flows.  

 . Is there some sort of "official" rating list? Oh and one that might not skip a bunch of numbers like most.  

 
			 
			
					
				Re: stock 97 4.0 injectors?
				Posted: October 8th, 2011, 1:21 pm
				by TJ9999
				Would be interested in a website with calculations too. 
In the meantime I found out: exact specs are 49.2 psi ± 5 psi for 97-04, and 58 psi ± 2 psi for 05 and 06 models.
			 
			
					
				Re: stock 97 4.0 injectors?
				Posted: October 12th, 2011, 12:06 pm
				by jeepman
				Programbo wrote:jeepman wrote:Locate the part number on the side of the injector because they have different options of injectors for example:
53030778 Fuel Injector 4.0L 87-99 (EV1 Grey 23.2Lbs@49PSI)
04854181 Fuel Injector TJ 4.0L 00-05 (EV6 Blue 19Lbs@49PSI)
But are'nt those just stock single port injectors? Aside from #/psi I thought one of the main reasons for an injector "upgrade" was to get the 4-port design ones for better fuel atomization/delivery.
 
Yes they are stock which is what I believe the OP was asking about...
I do feel that the 4 pin will be better then the single pin however I have yet to see any real data to prove one is better then the other and single pin are real easy to get in many easy to find sizes...