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Thread: Spray bars onto a Z20LET?

  
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    lee gsi's Avatar
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    Spray bars onto a Z20LET?

    What do oil spray bars do?

    Is it worth fitting to a Z20LET?

    How much does it cost?

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    888rich's Avatar
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    dont they help cool the engine internally

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    They cool the pistons down i think from underneath, the VXR uses them. Will allow the engine to run more boost safely. I think scotty might be having them fitted in his big power conversion.

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    MikeWarner's Avatar
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    Water injection can have the same effect. I'm may look into removing the balancer shafts and using the oil ways from them to supply a spray bar, but not too sure.
    8 Astras in a row! Can Anyone Beat That?
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    Its definitely worh doing, as done properly as stated can cool down pistons. Been some debate on migweb on the various ways to do it, apparantly regals is very effective or good for replacing the nozzeles. A guy called chip has done a modified way which a couple of guys have also done, which works properly. Think theres a guy on there too who will fit them for you too, for a small prce. Worth doing while your engines apart definitely.

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    MikeWarner's Avatar
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    Matt - I disagree. Why do you think it is well worth doing? Getting forged pistons will allow higher temps to be run. Water injection can cool it down more too. Also, exhaust wrap and a turbo blanket can keep the exhaust hotter, allowing heat to be pulled out of the cylinders more easily. Then there is ceramic coating, which will eliminate any risk of melting the pistons.

    If your engine is in bit and you have some spare cash, by all means, do it. THe sorts of power we are running doesn't really warrent it tbh.
    8 Astras in a row! Can Anyone Beat That?
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    Enkidu's Avatar
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    Just get the VXR block.. £1300... That has spray bars, ballancing shafts removed and forged pistons..... Your head fits straight on and it goes straight in.

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    lee gsi's Avatar
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    The VXR block is a straight swap?????????

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    Enkidu's Avatar
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    Quote Originally Posted by lee gsi
    The VXR block is a straight swap?????????
    Yep.... Comes from factory built... Just would need someone to fit it... Get some vxr injectors and bigger turbo and you would be running 300+

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    My point is though mike is that if your head is apart then you might as well do it, its a bit of an expensive thing to do if your not doing a rebuild like lee is, but if everything is apart then why not. Like all the examples you gave they all do the same thing roughly. Regardless of if you want to really push your engine they are going to help provide better reliability. Like anything to every little helps.

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