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Thread: fitting vxr turbo to z20let

  
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    phil-boyGSi's Avatar
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    fitting vxr turbo to z20let

    had blue smoke coming from the exhaust last week (lots of it!!!)
    suspected the turbo(after reading alot of posts on here)
    so got the turbo off at the weekend and quite a bit of play in the turbine(impeller/fan) pretty sure that aint right.
    thought i'de take the oppertunity to upgrade to a vxr turbo

    just wanted to make sure that nothing needs to be done to make this work (just bolt in place of the old 1) was hoping sum1 could confirm this for me.

    cheers
    *!Arden Blue GSi!*
    he came, he saw, HE CONQUERED

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    BMAstra's Avatar
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    yep its just a bolt on, make sure you prime the turbo thou

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    888 liam's Avatar
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    http://www.zlet.co.uk/T-unit%20Fitment.htm

    this might help mate. and whilst u have the new turbo of the car y dont u fit the oil restrictor bolt and maybe a forge recirc valve?

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    Thanks for the link, used the same 1 to get the turbo out at the wknd, lol.
    read a few threads on here about the oil restrictor bolt....
    some people have used it, some havn't?? Does it really need it?

    not 100% sure what a recirc valve is, tell me more please
    (sorry, may sound stupid. i know a lil bit about cars but not alot....lol)
    *!Arden Blue GSi!*
    he came, he saw, HE CONQUERED

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    remember seing a thread on here,
    is there a guy on here that manufacutres his own restrictor bolt,
    where else can i purchase 1?
    cheers
    *!Arden Blue GSi!*
    he came, he saw, HE CONQUERED

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    KevT.'s Avatar
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    while its off why not fit the improved cooling mod?

    AOC top 15 car at PVS 2009 & 2010
    313.7bhp/343Ibft


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    the cooling mod is the restrictor bolt yes??

    (as posted above^^)
    *!Arden Blue GSi!*
    he came, he saw, HE CONQUERED

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    DiscoFred's Avatar
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    No. It is the radiator cooling mod, can't remember the details, but try searching for it.

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    1) Cooling Modification = Redirects the flow of the coolant system so cooler water from the radiator goes to the turbo, rather than hot water from the other end of the radiator. This modification is standard on VXR's, and is listed by Vauxhall as a 'field remedy' for LET's.

    2) Re-circulating dumpvalve = This is a direct replacement for your standard dumpvalve, which is easier to fit with the turbo off the car. The standard dumpvalve is located in the side of the turbo. By removing it, and inserting a modifed one, such as the one from FORGE, it allows the turbo to 'spool' quicker between gear changes. It also makes it a little smoother. I have one, and it works.

    3) Oil Restrictor bolt = Replaces the existing bolt that holds the oil feed pipe to the turbo. Z20 engines run high oil pressures from the factory. High oil pressure in turbos is not generally a good thing. The oil restrictor bolt reduces the oil pressure to the turbo by reducing the oil flow rate. This in turn prolongs the life of your turbo.

    Hope this helps
    FYTuning Ltd - Coming Soon

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    Thanks LMD (helps alot)
    Any idea how much all this would set me back.
    cheers
    *!Arden Blue GSi!*
    he came, he saw, HE CONQUERED

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