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I supported Toymods
Location:
NE Melbourne
Registered:
May 2002
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Re: 100kw conversion
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Sun, 06 October 2002 12:28
 
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ok... now i'm not exactly 100% sure of thise, but it makes sence to me. if i am wrong could someone please correct me.
the largeport motor had injectors with 182cc flow at 2.55kg/cm^2 pressure. these were "low" impedance 2.0 ohm injectors. these are identified by the dark grey "C" type connector. there are also some pink coloured injector plugs. these are 200cc and ahve impedance 2.7 ohms.
the 1987.8 - 1989.8 smallport (100kW) engine had injectors with 213cc flow at 2.90kg/cm^2 pressure. these are the "high" impedance 13.8 ohm injectors. these can be identified by the beige "F" type injector plug. there is also a blue coloured injector plug, flowing 210cc and impedance of 2.4ohm
later model 100kW engines from 1989 onwards had injectors with 250cc flow at 2.90kg/cm^2 pressure. tese were also the "high" impedance injectors with 13.8 ohm and can be identified by either a green or violet "F" type connector (depending on whether is was MAP or AFM engine).
now if you consider that a low impedance load will allow a high current to flow, hence generating more heat!!! to combat this problem, it is common for ECU's that are coupled with "low" impedance injectors are fitted with a resistor to "show" the ECU a higher load, and hence lower current and less heat generated at the ECU. this resistor in turn dissapates the heat with a heat sink. it can be identified on a largeport 4AGE by an alloy heatsink type box about the size of a box of cigarettes located within the engine bay with a small loom coming from it, heading from the injector loom.
if you then want to use high impedance injectors in place of low impedance injectors, you will require to remove the resistor, otherwise if there is too great a load (high impedance injector and resistor) the ECU will not be able to supply enough current to trigger the injectors.
it would seem to me that the best upgrade in injectors for a largeport motor would be the 210cc injectors with the blue plugs as these have similar impedance and would not cause any problems with fitment to an existing "largeport" loom and ECU, resistor included!!!
now i think i got it pretty sorted with this post, if you have further questions, ask away...
oh by the way... i'd like to think that those listed specs on the JAP MAP 4AGE largeport motor are correct. i believe them, but then again, who's going to put thier engine on an engine dyno to prove them right, or wrong!!!
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| | Subject | Poster | Date |
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100kw conversion
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Kiwi Jake | Thu, 03 October 2002 10:26 |
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Re: 100kw conversion
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redrollaboy | Thu, 03 October 2002 12:57 |
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Re: 100kw conversion
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Kiwi Jake | Sat, 05 October 2002 00:02 |
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Re: 100kw conversion
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jazae86 | Thu, 03 October 2002 14:15 |
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Re: 100kw conversion
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jazae86 | Thu, 03 October 2002 14:16 |
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Re: 100kw conversion
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Kiwi Jake | Sat, 05 October 2002 09:44 |
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Re: 100kw conversion
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dorikin | Sun, 06 October 2002 03:44 |
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Re: 100kw conversion
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rollaboy | Sun, 06 October 2002 05:06 |
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Re: 100kw conversion
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chrisss | Sun, 06 October 2002 09:19 |
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Re: 100kw conversion
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jazae86 | Sun, 06 October 2002 12:20 |
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Re: 100kw conversion
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dorikin | Sun, 06 October 2002 12:28 |
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Re: 100kw conversion
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rollaboy | Mon, 07 October 2002 09:44 |
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Re: 100kw conversion
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jazae86 | Mon, 07 October 2002 10:30 |
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Re: 100kw conversion
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chrisss | Tue, 08 October 2002 09:50 |
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Re: 100kw conversion
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mrshin | Tue, 08 October 2002 14:11 |
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Re: 100kw conversion
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dorikin | Wed, 09 October 2002 08:12 |
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Re: 100kw conversion
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inertia | Wed, 09 October 2002 08:44 |
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Re: 100kw conversion
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dorikin | Wed, 09 October 2002 09:25 |
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Re: 100kw conversion
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rollaboy | Wed, 09 October 2002 12:40 |
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Re: 100kw conversion
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shoom | Fri, 22 April 2005 15:44 |
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Re: 100kw conversion
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Mr Revhead | Fri, 22 April 2005 23:04 |
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