injector colors, what's the diff?

[arson]

i bought a n/t head (its in the shop getting machined, since i warped mine) to put on my car. when i got it, i noticed the injectors were different colors. what is the difference?
injectors from n/t:

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injectors from my turbo head:

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(and yes, they're sitting on a 4-5-6 table in my garage )
thanks

 

[Gigaah]

You can tell the cc's of the injectors by the color. I cannot remember off hand wich colors are what sizes but thats how people diferentiate the stock injectors most often. I'm pretty sure there is also yellow.

 

[Warmachine91vr4]

blue=450cc/min
yellow=525 or 550 cc/min

 

[arson]

sweet! thanks, a free injector upgrade with my head

 

[CyberEye]

look on the side of the injectors, it should say what they are.

 

[BaddAssGst]

The yellow injectors are 510s and came off of JDM motors, but why someone would have put 510s on a non-turbo car is beyond me. I know my old non-turbo injectors had a yellowish part and they flow at 290cc so maybe your upgrade, isn't an upgrade afterall.

 

[huafist]

Those are 290cc injectors from an automatic N/T 1G. Pink tops.

 

[be989]

Does anybody have a list of the Mitsubishi fuel injector color codes and their corresponding size/flow rate?

 

[huafist]

My bad, they're not 290cc, they're 240cc. I must've been on crack last night.

 

[mysticfire6602]

what are the stock injectors on a 1g 2.0 n/a? my friend's built up civic has 450's in it and he told me that if i had smaller injectors than 450 that he would trade me

 

[turbohcar]

^^^^As posted just before, the stock N/A 2.0L injectors are rated at 240cc. Why you would want to put 450cc injectors on a stock unmodified car is beyond me, but I'm just inferring that's what you meant.

 

[mysticfire6602]

well im not gonna put them in yet. i have a 1g turbo manifold and turbo, and i can use a 92 tsi as a parts car because my friends brother has 4 junked ones, and all 4 of them are missing the fuel rails

 

[arson]

so the stock 2.0 n/a flow less fuel than the blue stock 2.0 turbo? just making sure so i dont put this all back together and end up having to switch them back out.

 

[steve]

so the stock 2.0 n/a flow less fuel than the blue stock 2.0 turbo?

Yes, about 46% less at 3 bar fuel pressure. The blue top injectors are 450cc low impedance injectors marked B450L on the side of the electrical connector and the N/A injectors are 240cc high impedance injectors marked N240H.

The 1G Turbo Autos had 390cc low impedance injectors marked B390L and the 1.8L cars got 210cc injectors marked N210H. You see the pattern? The 2G black top 450cc injectors ar marked MDL450 and the ones from the 2.4L are marked MDH275.

Steve

 

[arson]

thanks for all the replies guys, i'm glad i got this figured out, so i can get the right injectors clean for my rebuilt head and 16g

 

[be989]

Yes, about 46% less at 3 bar fuel pressure. The blue top injectors are 450cc low impedance injectors marked B450L on the side of the electrical connector and the N/A injectors are 240cc high impedance injectors marked N240H.

The 1G Turbo Autos had 390cc low impedance injectors marked B390L and the 1.8L cars got 210cc injectors marked N210H. You see the pattern? The 2G black top 450cc injectors ar marked MDL450 and the ones from the 2.4L are marked MDH275.

Steve

steve, from what you wrote I am assuming that N/T injectors are high impedance injectors while Turbo injectors are low impedance ones, is this a correct assumption?

 

[steve]

steve, from what you wrote I am assuming that N/T injectors are high impedance injectors while Turbo injectors are low impedance ones, is this a correct assumption?

Yes, this is the reason the turbo cars have a injector resistor pack on the firewall to provide current limiting since the ECU's uses the same injector drivers for Turbo and Non-Turbo. Putting low impedance injectors in a N/T car will burn out the drivers without the resistor.

Steve