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Thread: 315cc or 365cc 4AGZE injectors...good upgrade 4 bigport?

  1. #1
    dirty little Grease Monkey Cam-Rush's Avatar
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    Default 315cc or 365cc 4AGZE injectors...good upgrade 4 bigport?

    im thinking of buying some GZE injectors, the guy has 2 sets, one set is 315cc, the other is 365cc.
    Im just wondering if they fit directly into a bigport fuel rail, and will work with the stock computer?
    also i want to know if it is worthwile doing so for a worked N/A bigport?
    thanks,
    chris.
    Last edited by Cam-Rush; 22-02-2006 at 09:35 PM.

  2. #2
    Junior Member Domestic Engineer myne's Avatar
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    Default Re: 315cc or 365cc 4AGZE injectors...good upgrade 4 bigport?

    They wont work with the stock computer for 2 reasons
    1) They'll deliver about 60% too much fuel (guess)
    2) I believe they are a different impedence

  3. #3
    Junior Member Carport Converter 4agte's Avatar
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    Default Re: 315cc or 365cc 4AGZE injectors...good upgrade 4 bigport?

    i thought all gze injectors were 365cc

  4. #4
    MR 18RG Chief Engine Builder The Witzl's Avatar
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    Default Re: 315cc or 365cc 4AGZE injectors...good upgrade 4 bigport?

    this is one of the most common idiocies in the "modified" car scenes.

    BIGGER INJECTORS WILL NOT GIVE YOU MORE POWER UNLESS YOUR ENGINE IS ACTUALLY REQUIRING SUBSTANTIALLY MORE FUEL AND YOU HAVE A PROGRAMMABLE ECU
    ...... butt scratcher?!


  5. #5
    Junior Member Domestic Engineer psychofox's Avatar
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    Default Re: 315cc or 365cc 4AGZE injectors...good upgrade 4 bigport?

    Unless you are running out of fuel (ie leaning out) because your injectors are too small for the application there is no point in running bigger injectors. Changing injectors on a stock
    computer will only complicate matters and make your car run way too rich, etc.

    Edit: Bah you posted before I finished my post...yeah same as what witlz said...
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    Gary Motorsport Inc. Too Much Toyota takai's Avatar
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    Default Re: 315cc or 365cc 4AGZE injectors...good upgrade 4 bigport?

    Also for a large cam engine where you are gettign to capacity of the stock injectors it is better to go to 7MGE injectors rather than the 4AGZE injectors. I have GZE injectors in mine, and i use about 30% of the injector range, soon ill be switching to the 7MGE injectors. Mainly due to being able to pick up 2 sets (i.e. 3 4As) cheaply, but also because it will allow a slightly finer tuning of the engine.
    -Chris | Garage takai - Breaking cars since 1998
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    dirty little Grease Monkey Cam-Rush's Avatar
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    Default Re: 315cc or 365cc 4AGZE injectors...good upgrade 4 bigport?

    i know that simply upgrading the injectors wont give me more PoWaHz, im not stupid.
    i was simply trying to find out if they fit, and more so weather it was better to just get 7M ones, take a big step rather than a small one, as i plan to add my TD04 to the equasion later. i guess i forgot to add this to the post.

    i know it is stupid to contest people high in the toymods family hierachy but, thanks for making me look stupid witzl.

  8. #8
    Gary Motorsport Inc. Too Much Toyota takai's Avatar
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    Default Re: 315cc or 365cc 4AGZE injectors...good upgrade 4 bigport?

    With a TD04 you may as well go to 7MGTE injectors and bypass the GZE injectors anyway.
    -Chris | Garage takai - Breaking cars since 1998
    Sparky - AE86 IPRA Racer | RZN149 Hilux - Parts and Car Hauler
    I never saw a wild thing sorry for itself. A small bird will drop frozen dead from a bough without ever having felt sorry for itself. - D.H.Lawrence

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    Junior Member Carport Converter 4agte's Avatar
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    Default Re: 315cc or 365cc 4AGZE injectors...good upgrade 4 bigport?

    Quote Originally Posted by takai
    With a TD04 you may as well go to 7MGTE injectors and bypass the GZE injectors anyway.
    they arent that much more $$$ but i have a pair for sale if you need some 4agze injectors

  10. #10
    MR 18RG Chief Engine Builder The Witzl's Avatar
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    Default Re: 315cc or 365cc 4AGZE injectors...good upgrade 4 bigport?

    i was responding to this part of your post in particular.....

    Quote Originally Posted by Cam-Rush
    Im just wondering if they fit directly into a bigport fuel rail, and will work with the stock computer?
    also i want to know if it is worthwile doing so for a worked N/A bigport?
    In which case my reply was relevant

    They will fit in the rail....
    ... they "will" work with the stock computer (ignoring the bad effects)....
    ....... and they are NOT worth doing for a worked n/a bigport.
    ...... butt scratcher?!


  11. #11
    Junior Member Carport Converter 4agte's Avatar
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    Default Re: 315cc or 365cc 4AGZE injectors...good upgrade 4 bigport?

    Quote Originally Posted by The Witzl
    i was responding to this part of your post in particular.....



    In which case my reply was relevant

    They will fit in the rail....
    ... they "will" work with the stock computer (ignoring the bad effects)....
    ....... and they are NOT worth doing for a worked n/a bigport.
    maybee would have been nicer to answer his question like that witzl

  12. #12
    dirty little Grease Monkey Cam-Rush's Avatar
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    Default Re: 315cc or 365cc 4AGZE injectors...good upgrade 4 bigport?

    hear hear. thanks for your help anyway guys.

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