dohc and sohc Fuel Injectors

cricketol2 · Post by **cricketol2** » May 3rd, 2009, 1:55 am

can i use a dohc Fuel Injector in a sohc ?

SuperK · Post by **SuperK** » May 3rd, 2009, 9:27 am

Yes, but the DOHC are increased flow.

Limegreen mx-3 · Post by **Limegreen mx-3** » May 6th, 2009, 1:22 am

If the injectors are from a 90-94 mazda protege yes it will work without any CEL issues on the SOHC MX-3. If u use a the injectors from a 94-96 mazda MX-3 1.6 DOHC MX-3 than no it will not work with yours sohc. It will run like shyt i know i did that years ago in my sohc.

cricketol2 · Post by **cricketol2** » May 22nd, 2009, 1:00 am

are the stock injectors high or low impedance?

for both sohc and dohc both mx3 b6 engines

RS_OBD'oh_2 · Post by **RS_OBD'oh_2** » May 22nd, 2009, 1:19 am

high Z

cricketol2 · Post by **cricketol2** » May 22nd, 2009, 3:00 am

so they both have high?

RS_OBD'oh_2 · Post by **RS_OBD'oh_2** » May 22nd, 2009, 3:13 am

but it is not a good idea to use other than the injectors made for the specific motor

cricketol2 · Post by **cricketol2** » May 22nd, 2009, 3:15 am

even if you do a full overhaul to make it be able to take the beating

RS_OBD'oh_2 · Post by **RS_OBD'oh_2** » May 22nd, 2009, 11:45 am

larger than stock injectors give you more fuel... more fuel causes your engine to run rich. Running rich causes a large loss in power. You stock injectors are capable of fueling a fair amount over stock HP. Without the proper electronic fuel management you will just be slowing your car down.

cricketol2 · Post by **cricketol2** » May 22nd, 2009, 2:18 pm

i know that but dont you need to change the injectors if you run a boost of some kind?

RS_OBD'oh_2 · Post by **RS_OBD'oh_2** » May 23rd, 2009, 1:20 am

maybe. I don't recall reading anything on this thread about boost tho.
Go to RC eng to see their injector guide. And don't you have a SOHC? There is no cheap or easy way to boost that engine.

cricketol2 · Post by **cricketol2** » May 23rd, 2009, 1:51 am

ok thanks

cricketol2 · Post by **cricketol2** » September 29th, 2009, 6:01 pm

thanks for then help but can i ask another question about dohc Fuel Injector in a sohc

i have a adjustable fuel pressure regulator would that help me with adjusting how much fuel goes thru the injector? and would that not make the injectors last longer?

RS_OBD'oh_2 · Post by **RS_OBD'oh_2** » September 29th, 2009, 7:35 pm

ya, and no
you can adjust the pressure to the injectors, but that won't exactly help you. No, I can't see how the injectors could last longer that way. Normally the 10 or so years they last should be good enough.

nos92mx3 · Post by **nos92mx3** » September 30th, 2009, 7:17 am

Think of an injector as an electric stepper motor thats uses fuel to cool it.
I would just find some sohc injectors, if you plan on boosting it with someway to control the fuel then by all means get some bigger injectors.

You could use a adj fpr to adjust for the larger injectors, but you would either need a wideband or a hell of a lot of patience reading plugs.

MX-3.com

dohc and sohc Fuel Injectors

dohc and sohc Fuel Injectors

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Re: dohc and sohc Fuel Injectors

Re: dohc and sohc Fuel Injectors

Re: dohc and sohc Fuel Injectors

Re: dohc and sohc Fuel Injectors

Re: dohc and sohc Fuel Injectors

Re: dohc and sohc Fuel Injectors

Re: dohc and sohc Fuel Injectors

Re: dohc and sohc Fuel Injectors

Re: dohc and sohc Fuel Injectors

Re: dohc and sohc Fuel Injectors

Re: dohc and sohc Fuel Injectors

Re: dohc and sohc Fuel Injectors

Re: dohc and sohc Fuel Injectors