fuel injector Question - Performance Forum

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fuel injector Question
Tuesday, December 13, 2005 5:52 PM
high and low resistance injectors what does this mean? And also what size would you go with, with an all motor build up? 10:1 comp .20 over. 1mm OS valves, head milled .20 and a P&P, crank polished, H beam rods ect the list goes on.............to be continued

Re: fuel injector Question
Tuesday, December 13, 2005 6:07 PM
Anybody?
Re: fuel injector Question
Tuesday, December 13, 2005 6:13 PM
Low impedence injectors flow more fuel at the given voltage signal. As far as the size, you just need to experiment a little. On a built turbo LN2 I used 500cc injectors (on a custom manifold and fuel rail, this won't work on a stock manifold) and had plenty of reserve left. I never hit full duty cycle. The best thing is to contact a manufacturer and tell them what you're going with. Or even ask some people on here what they use and get an idea of whats gonna work for you. I'd also recommend a SAFC or something to tune the fuel curve.


"Wenn ich gehen lasse von, was ich ich bin, werden Sie, was ich bedeutet werde, um zu sein."
Re: fuel injector Question
Tuesday, December 13, 2005 7:57 PM
Kevin Hamilton wrote:high and low resistance injectors what does this mean? And also what size would you go with, with an all motor build up? 10:1 comp .20 over. 1mm OS valves, head milled .20 and a P&P, crank polished, H beam rods ect the list goes on.............to be continued


you need to do calculations for how much power you are realistically looking to make. based on what i am reading, you should really be fine with 30# injectors on a good tune. and with the all motor build you are planning, SAFC is not a sufficient tuning tool. I would look into Megasquirt or an E-manage.




I was a retard, and now I'm permanently banned.
Re: fuel injector Question
Tuesday, December 13, 2005 8:06 PM
High impedance and low impedance injectors require different types of electronics to live. The high impedance injectors can be used where low impedance types are removed but they won't always work as well at low speeds. Low impedance injectors cannot be used where high impedance parts are removed unless some type of control circuit or current limiter is installed.

low impedance injectors are typically easier to control at small injector openings. Injectors which flow large amounts of fuel are often low impedance types so they are more manageable at idle.

-->Slow
Re: fuel injector Question
Wednesday, December 14, 2005 2:37 PM
n/a u dont need aftermarket injectors stock ones will spray enough furl for ur motor
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