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Location:
sunny coast, qld
Registered:
October 2002
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US 550cc 2jz injectors
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Sat, 18 September 2004 10:48
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Does anyone know what impedance these are exactly? I know they are low impedance but I don't know what value. The ECU I am planning on getting can only run 1.2ohms or higher.
thanks
Chris
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Location:
Brisbane
Registered:
February 2003
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Re: US 550cc 2jz injectors
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Sat, 18 September 2004 11:01
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chris: is unlikely they will be any lower than 1.2 ohms - and if concerned, resistor pack(s) could bring ultra-low-Z injectors back up to a usable impedance.
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Location:
Brisbane
Registered:
November 2002
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Re: US 550cc 2jz injectors
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Sat, 18 September 2004 11:30
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Hi Chris
Generally 'low' impedance injectors are something like 4 ohms and 'high' impedance injectors are over 10 ohms. I would be truly stunned if these injectors were that low.
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Location:
sunny coast, qld
Registered:
October 2002
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Re: US 550cc 2jz injectors
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Sat, 18 September 2004 13:25
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thanks guys.
That is what I was thinking also. Just good to get some reassurance 
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Location:
Sydney
Registered:
May 2002
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Location:
usa
Registered:
October 2003
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Re: US 550cc 2jz injectors
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Mon, 20 September 2004 19:44
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actually they are 13.8ohms according to toysport.com
jeremy
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Location:
brisbane
Registered:
May 2003
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Re: US 550cc 2jz injectors
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Mon, 20 September 2004 22:41
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380cc/min std yellow top 1jz injectors are 13.8ohms impedence...
550's are a low impedence... Not sure on exact value though...
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Location:
sunny coast, qld
Registered:
October 2002
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Re: US 550cc 2jz injectors
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Mon, 20 September 2004 23:01
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forgot to ask if these have the same plugs on them as 380/440cc injectors?
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Location:
Sydney
Registered:
May 2002
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Re: US 550cc 2jz injectors
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Tue, 21 September 2004 00:00
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Chris
They use the same plugs but need a small tab on the injector relieved to fit.
Impedance was about 4 Ohms on my old set.
Personally, I'd recommend sourcing some new low impedance Sard 650's directly from Japan - by the time you buy some used 550's for $300-400 freighted, clean/flow test them for $100-200, replace the 0-ring/absorber set for another $100, source/make the resistor packs and spend hours butchering the loom you've paid for the new set for $650-700 which are new, come with o-rings and new connectors if required and have better resolution than the 550's in my experience. You'll also have plenty of fuel for 350+rwkw.
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