Turbo Injectors??

[gottraction?]

Hey I have a problem. I was putting a new manifold gasket on my 91 laser rs turbo. and I noticed one of my 450s are cracked down at the bottom where it goes in to the head. I was wondering if a 2cnd gen 450 would fit right in or was the resistance different. Also If anyone has any 1st or 2cnd gen turbo injectors for sale that i can buy as quick as possible!!? Thanks

[2Fast4Radar]

They should work fine, but there's a couple problems with picking up another random injector:

First of all the actual flow from the injector. Just because it says 450/cc/min doesn't mean it actually flows that. Some injectors (stamped the same) flow slightly different amounts out of the box. The factory would have a balanced set when the car is built (probably within 1-2/cc or whatever the manufacturer tollerances are), but after time/miles that number will go down as the injector/spray nozzle gets clogged or worn with use.

You might have 3 injectors that flow 448, 441, and 442 cc/min right now. If you pick up some random injector who knows what condition it's in. It could be clogged and flowing only 408 cc/min. What's that mean? You could hit boost, that cylinder runs lean, you detonate, and blow the land ring on that piston. Goodbye engine! Never put a random unknown injector in your car.

This brings me to the next thing: Don't mix different and match injector models. The difference in the injectors is as follows:

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Blue top

Nikki INP-009 2.2 ohm 450cc @ 3 bar (43.5 psi)
low impedance (current "peak and hold") top-feed
single-spray pattern disc nozzle
OEM for DSM 1st gen (91-93) turbo

Black top

Nikki INP-018 2.2 ohm 450cc @ 3 bar (43.5 psi)
low impedance (current "peak and hold") top-feed
dual-spray pattern disc nozzle
OEM for DSM 2nd gen (94-99) turbo

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What's the difference? Spray pattern. Personally I would try to get a full set of 4 2nd gen DSM injectors with the dual spray pattern. This sprays the fuel towards the each pair of valve recesses in the piston. I would assume this is done to better atomize the fuel compared to the single spray pattern that just sprays fuel straight down on the first gen injectors. Nothing is wrong with the first gen injectors, but on a car with 4 valves per cylinder I prefer this style of spray pattern. Regardless, don't mix and match models as they ARE different!

Finally, after you get a set of matching injectors send them off to http://www.cruzinperformance.com/ to be cleaned/rebuilt, balanaced, and flow tested. The cost is only about $11/injector (last time I used them - they're very good and the price is very reasonable) and you will also get a data sheet showing the injectors flow rates after the job is done. This will ensure each cylinder is getting an equal amount of fuel. Compared to unknown injectors you should get better performance as well as peace of mind knowing your car won't run lean and detonate on one cylinder with a bad injector.

[abstract]

This is some good info!!!!!!!!!!!