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Thread: Fitting SRI injectors to SXI?

  
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    Fitting SRI injectors to SXI?

    Has anyone got any knowledge of fitting SRI injectors to and SXI Astra 2004? Any advice/ help would be appreciated
    Joe

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    Maskell's Avatar
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    Maybe if you listed your engine and the engine the proposed injectors are coming from people might be able to help


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    Haha new to this lol I have a 1.6 SXI and don't have a set of injectors waiting or anything wanted to know what to look for first...

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    SXi and SRi are trim levels, it doesn't really say anything about engines. (i.e. you get a 1.8 SXi and SRi which have the exact same engine).
    Previous Astras: 1994 Cesaro 1.8 16v | 2002 SXi 1.6 16v | 2001 Coupé 2.0 Turbo | 1999 LS 1.6 16v
    Other Vauxhalls: 2001 Vectra 1.8 16v| 2003 Vectra GSi 3.2 V6 | 2005 Signum CDTi 150

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    Oh right, cheers well ok then say I wanted to put 1.8 or bigger injectors in the 1.6 would they fit can it be done?
    2004 1.6 Astra SXI

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    nothing to be gained from this, it would run rough and end up washing the bores down as it would over fuel. better to get your original injectors ultrasonically cleaned, that will give them and your engine a new lease of life

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    Quote Originally Posted by steve1412 View Post
    nothing to be gained from this, it would run rough and end up washing the bores down as it would over fuel. better to get your original injectors ultrasonically cleaned, that will give them and your engine a new lease of life
    I was always under the impression that it isn't the fuel injectors that govern the amount of fuel, but the fuel rail, regulation and pressure? and that the ECU trims it aswell to a certain degree?

    Not to contradict you steve, just curious
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    correct mate it does correct it to a degree but if you are spraying fuel from an injector with a bigger cc spray outlet then no amount of ecu metering will compensate for the bigger sized injector, not totally anyway unless you were to rolling road it and set the ecu map to match the extra fueling, but the cost for the gain would not be worth it. i sense that the original poster was probably thinking that whacking in bigger injectors was an instant performance gain

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    If your injectors have failed, it's cheap enough to get them cleaned to be like new, around £30 or so. The OEM injectors should be good for 150bhp+, as no engines I've found with that output on the Z16XE have needed uprated injectors.

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    Quote Originally Posted by steve1412 View Post
    correct mate it does correct it to a degree but if you are spraying fuel from an injector with a bigger cc spray outlet then no amount of ecu metering will compensate for the bigger sized injector, not totally anyway unless you were to rolling road it and set the ecu map to match the extra fueling, but the cost for the gain would not be worth it. i sense that the original poster was probably thinking that whacking in bigger injectors was an instant performance gain
    Ah thanks for clearing that up, wasn't too sure to be fair
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